more review comments

This is in continue to:
- #850
- #848

The last files should be converted as part of this PR, there are only a
handful left.

.babelrc

@@ -1,20 +0,0 @@
-{
-  "presets": [
-    "@babel/preset-env",
-    "@babel/preset-react"
-  ],
-  "plugins": [
-    "static-fs",
-    "react-hot-loader/babel",
-    "@babel/plugin-proposal-class-properties"
-  ],
-  "env": {
-    "test": {
-      "plugins": [
-        ["istanbul", {
-          "exclude": ["node_modules/**", "test/**"]
-        }]
-      ]
-    }
-  }
-}

.circleci/config.yml

@@ -1,103 +0,0 @@
-version: 2
-templates:
-  # Test the build **only** no webdriver
-  build-steps: &build-steps
-    - checkout
-    - run:
-        name: "Create artifacts directory"
-        command: mkdir /tmp/artifacts
-    - restore_cache:
-        key: v1-dependencies-{{ arch }}-{{ checksum "package.json" }}
-
-    - run: npm install
-
-    - save_cache:
-        paths:
-          - node_modules
-        key: v1-dependencies-{{ arch }}-{{ checksum "package.json" }}
-
-    - run: mkdir -p /tmp/artifacts/logs
-    - run: npm run build
-    - run: npm run lint-js
-    - run: npm run lint-css
-    - store_artifacts:
-        path: /tmp/artifacts
-        destination: /artifacts
-  # Test in webdriver
-  wdio-steps: &wdio-steps
-    - checkout
-    - run:
-        name: "Create artifacts directory"
-        command: mkdir /tmp/artifacts
-    - restore_cache:
-        key: v1-dependencies-{{ arch }}-{{ checksum "package.json" }}
-
-    - run: npm install
-
-    - save_cache:
-        paths:
-          - node_modules
-        key: v1-dependencies-{{ arch }}-{{ checksum "package.json" }}
-
-    - run: mkdir -p /tmp/artifacts/logs
-    - run: npm run build
-    - run: npm run profiling-build
-    - run: npm run lint-js
-    - run: npm run lint-css
-    - run: DOCKER_HOST=localhost npm test
-    - run: ./node_modules/.bin/istanbul report --include /tmp/artifacts/coverage/coverage.json --dir /tmp/artifacts/coverage html lcov
-    - store_artifacts:
-        path: /tmp/artifacts
-        destination: /artifacts
-jobs:
-  build-linux-node-v10:
-    docker:
-      - image: node:10
-      - image: selenium/standalone-chrome:3.141.59
-    working_directory: ~/repo-linux-node-v10
-    steps: *wdio-steps
-  build-linux-node-v12:
-    docker:
-      - image: node:12
-    working_directory: ~/repo-linux-node-v12
-    steps: *build-steps
-  build-linux-node-v13:
-    docker:
-      - image: node:13
-    working_directory: ~/repo-linux-node-v13
-    steps: *build-steps
-  build-osx-node-v10:
-    macos:
-      xcode: "9.0"
-    dependencies:
-      override:
-        - brew install node@10
-    working_directory: ~/repo-osx-node-v10
-    steps: *build-steps
-  build-osx-node-v12:
-    macos:
-      xcode: "9.0"
-    dependencies:
-      override:
-        - brew install node@12
-    working_directory: ~/repo-osx-node-v12
-    steps: *build-steps
-  build-osx-node-v13:
-    macos:
-      xcode: "9.0"
-    dependencies:
-      override:
-        - brew install node@13
-    working_directory: ~/repo-osx-node-v13
-    steps: *build-steps
-
-workflows:
-  version: 2
-  build:
-    jobs:
-      - build-linux-node-v10
-      - build-linux-node-v12
-      - build-linux-node-v13
-      - build-osx-node-v10
-      - build-osx-node-v12
-      - build-osx-node-v13

.codesandbox/ci.json

@@ -0,0 +1,4 @@
+{
+  "packages": [],
+  "sandboxes": ["/"]
+}

.dockerignore

@@ -0,0 +1,45 @@
+.git
+.gitignore
+Dockerfile
+
+#
+#
+#     COPIED FROM .gitignore , please keep it in sync
+#
+#
+
+# Logs
+logs
+*.log
+*.swp
+*.swo
+
+# Runtime data
+pids
+*.pid
+*.seed
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directory
+# https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git
+node_modules
+
+# Ignore build files
+public
+/errorShots
+/old
+/build

.eslintrc.cjs

@@ -0,0 +1,20 @@
+module.exports = {
+    root: true,
+    env: { browser: true, es2020: true },
+    extends: [
+      'eslint:recommended',
+      'plugin:react/recommended',
+      'plugin:react/jsx-runtime',
+      'plugin:react-hooks/recommended',
+    ],
+    ignorePatterns: ['dist', '.eslintrc.cjs'],
+    parserOptions: { ecmaVersion: 'latest', sourceType: 'module' },
+    settings: { react: { version: '18.2' } },
+    plugins: ['react-refresh'],
+    rules: {
+      'react-refresh/only-export-components': [
+        'warn',
+        { allowConstantExport: true },
+      ],
+    },
+  }

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,27 @@
+---
+name: Bug report
+about: Create a report to help us improve Maputnik
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!-- Thanks for your feedback! Please complete the following information: -->
+
+**Maputnik version**:<!-- e.g v1.7.0, main -->
+**Browser**:
+**OS**:<!-- (Windows, macOS, Linux) -->
+
+**Description of the bug**:
+
+**Steps to reproduce the behavior**:
+1.
+2.
+3.
+
+**Style file or style URL**:
+<!-- If applicable, attach a style file (zip) or provide a style URL. -->
+
+**Screenshots**:
+<!-- If applicable, add screenshots to help explain your problem. -->

.github/ISSUE_TEMPLATE/other-issue.md

@@ -0,0 +1,11 @@
+---
+name: Other issue
+about: Feature request or other issue which is no bug report
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!-- Thanks for reaching out! If you are having general Maputnik mapping questions, please asking them at https://gis.stackexchange.com/ using the 'maputnik' tag https://gis.stackexchange.com/questions/tagged/maputnik and read https://gis.stackexchange.com/help/how-to-ask before you do so (please keep in mind that you're asking there in a general GIS forum, not a dedicated support channel) -->
+

.github/dependabot.yml

@@ -0,0 +1,14 @@
+version: 2
+updates:
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    open-pull-requests-limit: 2
+    versioning-strategy: increase
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    open-pull-requests-limit: 2
+    versioning-strategy: increase

.github/workflows/ci.yml

@@ -0,0 +1,134 @@
+name: ci
+
+on:
+  pull_request:
+    branches: [ main ]
+  push:
+    branches: [ main ]
+
+jobs:
+  build-docker:
+    name: build docker
+    runs-on: ubuntu-latest
+
+    if: ${{ github.event_name == 'push' || github.event_name == 'pull_request' }}
+
+    steps:
+    - uses: actions/checkout@v4
+    - run: docker build -t docker.pkg.github.com/maputnik/editor/editor:main .
+
+  # build the editor
+  build-node:
+    name: "build on ${{ matrix.os }}"
+    runs-on: ${{ matrix.os }}
+
+    if: ${{ github.event_name == 'push' || github.event_name == 'pull_request' }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-node@v4
+      with:
+        node-version-file: '.nvmrc'
+    - uses: actions/cache@v1
+      with:
+        path: ~/.npm
+        key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+        restore-keys: |
+          ${{ runner.os }}-node-
+    - run: npm ci
+    - run: npm run build
+
+
+  build-artifacts:
+    name: "build artifacts"
+    runs-on: ubuntu-latest
+    if: ${{ github.event_name == 'push' || github.event_name == 'pull_request' }}
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-node@v4
+      with:
+        node-version-file: '.nvmrc'
+    - uses: actions/cache@v1
+      with:
+        path: ~/.npm
+        key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+        restore-keys: |
+          ${{ runner.os }}-node-
+    - run: npm ci
+    - run: npm run build
+    - run: npm run build-storybook
+    - name: artifacts/editor
+      uses: actions/upload-artifact@v1
+      with:
+        name: editor
+        path: dist
+    - name: artifacts/storybook
+      uses: actions/upload-artifact@v1
+      with:
+        name: storybook
+        path: build/storybook
+
+    # Build and upload desktop CLI artifacts
+    - name: Set up Go
+      uses: actions/setup-go@v3
+      with:
+        go-version: ^1.19.x
+      id: go
+
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v4
+      with:
+        repository: maputnik/desktop
+        ref: master
+        path: ./src/github.com/maputnik/desktop/
+
+    - name: Make
+      run: cd src/github.com/maputnik/desktop/ && make
+
+    - name: Artifacts/linux
+      uses: actions/upload-artifact@v1
+      with:
+        name: maputnik-linux
+        path: ./src/github.com/maputnik/desktop/bin/linux/
+
+    - name: Artifacts/darwin
+      uses: actions/upload-artifact@v1
+      with:
+        name: maputnik-darwin
+        path: ./src/github.com/maputnik/desktop/bin/darwin/
+
+    - name: Artifacts/windows
+      uses: actions/upload-artifact@v1
+      with:
+        name: maputnik-windows
+        path: ./src/github.com/maputnik/desktop/bin/windows/
+  
+  e2e-tests:
+    name: "E2E tests using ${{ matrix.browser }}"
+    strategy:
+      fail-fast: false
+      matrix:
+        browser: [chrome, firefox]
+
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - run: npm ci
+      - name: Cypress run
+        uses: cypress-io/github-action@v6
+        with:
+          build: npm run build
+          start: npm run start
+          browser: ${{ matrix.browser }}
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v3
+        with:
+          files: ${{ github.workspace }}/.nyc_output/out.json
+          verbose: true

.github/workflows/deploy.yml

@@ -0,0 +1,26 @@
+name: deploy
+
+on:
+  push:
+    branches: [ main ]
+    tags:
+    - 'v*'
+
+jobs:
+  # publish docker to GitHub registry
+  deploy-docker:
+    name: deploy/docker
+    runs-on: ${{ matrix.os }}
+
+    if: ${{ github.event_name == 'push' }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+
+    steps:
+    - uses: actions/checkout@v4
+    - run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login docker.pkg.github.com -u orangemug --password-stdin
+    - run: docker build -t docker.pkg.github.com/maputnik/editor/editor:main .
+    - run: docker push docker.pkg.github.com/maputnik/editor/editor:main

.gitignore

@@ -14,6 +14,7 @@ lib-cov
 
 # Coverage directory used by tools like istanbul
 coverage
+.nyc_output
 
 # Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
 .grunt
@@ -33,3 +34,5 @@ public
 /errorShots
 /old
 /build
+/cypress/screenshots
+/dist/

.nvmrc

@@ -0,0 +1 @@
+18.19

.nycrc.json

@@ -0,0 +1,18 @@
+{
+  "all": true,
+  "extends": "@istanbuljs/nyc-config-typescript",
+  "check-coverage": false,
+  "include": ["src/**/*.ts", "src/**/*.tsx"],
+  "exclude": [
+    "cypress/**/*.*",
+    "**/*.d.ts",
+    "**/*.cy.tsx",
+    "**/*.cy.ts",
+    "./coverage/**",
+    "./cypress/**",
+    "./dist/**",
+    "node_modules"
+  ],
+  "report-dir": "coverage",
+  "reporter": ["json", "lcov", "json-summary"]
+}

.storybook/main.js

@@ -0,0 +1,9 @@
+const config = {
+  stories: ['../stories/**/*.stories.jsx'],
+  addons: ['@storybook/addon-actions', '@storybook/addon-links', '@storybook/addon-a11y/register', '@storybook/addon-storysource'],
+  framework: {
+    name: '@storybook/react-vite',
+    options: {}
+  }
+};
+export default config;

.storybook/manager.js

@@ -0,0 +1,7 @@
+import { addons } from '@storybook/addons';
+import { themes } from '@storybook/theming';
+import theme from './maputnik.theme';
+
+addons.setConfig({
+  theme: theme,
+});

.storybook/maputnik.theme.js

@@ -0,0 +1,8 @@
+import { create } from '@storybook/theming/create';
+
+export default create({
+  base: 'light',
+
+  brandTitle: 'Maputnik',
+  brandUrl: 'https://github.com/maputnik/editor',
+});

Dockerfile

@@ -1,21 +1,22 @@
-FROM node:10-slim
+FROM node:18 as builder
+WORKDIR /maputnik
 
-RUN apt-get update && apt-get install -y --no-install-recommends \
+# Only copy package.json to prevent npm install from running on every build
-    git \
+COPY package.json package-lock.json ./
-    python \
+RUN npm install
- && rm -rf /var/lib/apt/lists/*
 
-EXPOSE 8888
+# Build maputnik
-
+# TODO:  we should also do a   npm run test   here (needs more dependencies)
-ENV HOME /maputnik
+COPY . .
-RUN mkdir ${HOME}
-
-COPY . ${HOME}/
-
-WORKDIR ${HOME}
-
-RUN npm install -d
 RUN npm run build
 
-WORKDIR ${HOME}/build/build
+#---------------------------------------------------------------------------
-CMD python -m SimpleHTTPServer 8888
+
+# Create a clean python-based image with just the build results
+FROM python:3-slim
+WORKDIR /maputnik
+
+COPY --from=builder /maputnik/dist .
+
+EXPOSE 8888
+CMD python -m http.server 8888

README.md

@@ -1,33 +1,30 @@
-# Maputnik
+<img width="200" alt="Maputnik logo" src="https://cdn.jsdelivr.net/gh/maputnik/design/logos/logo-color.png" />
 
-[![Build Status](https://circleci.com/gh/maputnik/editor/tree/master.svg?style=shield)][circleci]
+# Maputnik
-[![Windows Build Status](https://ci.appveyor.com/api/projects/status/anelbgv6jdb3qnh9/branch/master?svg=true)][appveyor]
+[![GitHub CI status](https://github.com/maputnik/editor/workflows/ci/badge.svg)][github-action-ci]
-[![Dependency Status](https://david-dm.org/maputnik/editor.svg)][dm-prod]
-[![Dev Dependency Status](https://david-dm.org/maputnik/editor/dev-status.svg)][dm-dev]
 [![License](https://img.shields.io/badge/license-MIT-blue.svg)][license]
 
-[circleci]:    https://circleci.com/gh/maputnik/editor/tree/master
+[github-action-ci]: https://github.com/maputnik/editor/actions?query=workflow%3Aci
-[appveyor]:    https://ci.appveyor.com/project/lukasmartinelli/editor
+[license]:          https://tldrlegal.com/license/mit-license
-[dm-prod]:     https://david-dm.org/maputnik/editor
-[dm-dev]:      https://david-dm.org/maputnik/editor?type=dev
-[license]:     https://tldrlegal.com/license/mit-license
 
-<img width="200" align="right" alt="Maputnik" src="https://cdn.jsdelivr.net/gh/maputnik/editor@1.5.0/src/img/maputnik.png" />
+A free and open visual editor for the [MapLibre GL styles](https://maplibre.org/maplibre-style-spec/)
-
-A free and open visual editor for the [Mapbox GL styles](https://www.mapbox.com/mapbox-gl-style-spec/)
 targeted at developers and map designers.
 
+
+## Usage
+
 - :link: Design your maps online at **<https://maputnik.github.io/editor/>** (all in local storage)
-- :link: Try out the v1.7.0-beta release at: https://maputnik.github.io/releases/v1.7.0-beta/
 - :link: Use the [Maputnik CLI](https://github.com/maputnik/editor/wiki/Maputnik-CLI) for local style development
+- In a Docker, run this command and browse to http://localhost:8888, Ctrl+C to stop the server.
 
-Mapbox has built one of the best and most amazing OSS ecosystems. A key component to ensure its longevity and independence is an OSS map designer.
+```bash
-
+docker run -it --rm -p 8888:8888 maputnik/editor
+```
 
 ## Donations
+Mapbox has built one of the best and most amazing OSS ecosystems. A key component to ensure its longevity and independence is an OSS map designer.
 If you or your organisation has seen value from Maputnik, please consider donating at <https://maputnik.github.io/donate>
 
-
 ## Documentation
 
 The documentation can be found in the [Wiki](https://github.com/maputnik/editor/wiki). You are welcome to collaborate!
@@ -39,7 +36,7 @@ The documentation can be found in the [Wiki](https://github.com/maputnik/editor/
 
 ## Develop
 
-Maputnik is written in ES6 and is using [React](https://github.com/facebook/react) and [Mapbox GL JS](https://www.mapbox.com/mapbox-gl-js/api/).
+Maputnik is written in ES6 and is using [React](https://github.com/facebook/react) and [MapLibre GL JS](https://maplibre.org/projects/maplibre-gl-js/).
 
 We ensure building and developing Maputnik works with the [current active LTS Node.js version and above](https://github.com/nodejs/Release#release-schedule).
 
@@ -49,21 +46,17 @@ Install the deps, start the dev server and open the web browser on `http://local
 # install dependencies
 npm install
 # start dev server
-npm start
+npm run start
 ```
 
-If you want Maputnik to be accessible externally use the [`--host` option](https://webpack.js.org/configuration/dev-server/#devserverhost):
+If you want Maputnik to be accessible externally use the [`--host` option](https://vitejs.dev/config/server-options.html#server-host):
 
 ```bash
 # start externally accessible dev server
-npm start -- --host 0.0.0.0 
+npm run start -- --host 0.0.0.0
 ```
 
-The build process will watch for changes to the filesystem, rebuild and autoreload the editor. However note this from the [webpack-dev-server docs](https://webpack.js.org/configuration/dev-server/):
+The build process will watch for changes to the filesystem, rebuild and autoreload the editor.
-
-> webpack uses the file system to get notified of file changes. In some cases this does not work. For example, when using Network File System (NFS). Vagrant also has a lot of problems with this. ([snippet source](https://webpack.js.org/configuration/dev-server/#devserverwatchoptions-))
-
-To enable polling add `export WEBPACK_DEV_SERVER_POLLING=1` to your environment.
 
 ```
 npm run build
@@ -79,34 +72,32 @@ npm run lint-styles
 
 
 ## Tests
-For testing we use [webdriverio](http://webdriver.io) and [selenium-standalone](https://github.com/vvo/selenium-standalone)
+For E2E testing we use [Cypress](https://www.cypress.io/)
 
-[selenium-standalone](https://github.com/vvo/selenium-standalone) starts a server that will launch browsers on your local machine. We use chrome so you **must** have chrome installed on your machine.
+ [Cypress](https://www.cypress.io/) doesn't starts a server so you'll need to start one manually by running `npm run start`.
 
-Now open a terminal and run the following. This will install the drivers on your local machine
+Now open a terminal and run the following using *chrome*:
 
 ```
-./node_modules/.bin/selenium-standalone install
+npm run test
+```
+or *firefox*:
+```
+npm run test -- --browser firefox
 ```
 
-Now start the standalone server
+See the following docs for more info: (Launching Browsers)[https://docs.cypress.io/guides/guides/launching-browsers]
+
+You can also see the tests as they run or select which suites to run by executing:
 
 ```
-./node_modules/.bin/selenium-standalone start
+npm run cy:open
 ```
 
-Then open another terminal and run
-
-```
-npm test
-```
-
-After some time you should see a browser launch which will be automated by the test runner.
-
 
 ## Related Projects
 
-- [maputnik-dev-server](https://github.com/nycplanning/labs-maputnik-dev-server) - An express.js server that allows for quickly loading the style from any mapboxGL map into mapuntnik. 
+- [maputnik-dev-server](https://github.com/nycplanning/labs-maputnik-dev-server) - An express.js server that allows for quickly loading the style from any mapboxGL map into mapuntnik.
 
 ## Sponsors
 
@@ -166,6 +157,5 @@ Sina Martinelli, Nicholas Doiron, Neil Cawse, Urs42, Benedikt Groß, Manuel Roth
 
 Maputnik is [licensed under MIT](LICENSE) and is Copyright (c) Lukas Martinelli and contributors.
 
-**Disclaimer** This project is not affiliated with Mapbox or Mapbox Studio. It is an independent style editor for the
+**Disclaimer** This is an independent style editor.
-open source technology in the Mapbox GL ecosystem.
 As contributor please take extra care of not violating any Mapbox trademarks. Do not get inspired by Mapbox Studio and make your own decisions for a good style editor.

appveyor.yml

@@ -1,26 +0,0 @@
-image: Visual Studio 2019
-environment:
-  matrix:
-    - nodejs_version: "10"
-    - nodejs_version: "12"
-    - nodejs_version: "13"
-platform:
-  - x86
-  - x64
-install:
-  # https://github.com/appveyor/ci/issues/2921#issuecomment-501016533
-  - ps: |
-      try {
-      Install-Product node $env:nodejs_version $env:platform
-      } catch {
-      echo "Unable to install node $env:nodejs_version, trying update..."
-      Update-NodeJsInstallation (Get-NodeJsLatestBuild $env:nodejs_version) $env:platform
-      }
-  - md public
-  - npm install --global windows-build-tools
-  - npm install
-build_script:
-  - npm run build
-test_script:
-  - npm run lint-js
-  - npm run lint-css

config/wdio.conf.js

@@ -1,291 +0,0 @@
-var webpack          = require("webpack");
-var WebpackDevServer = require("webpack-dev-server");
-var webpackConfig    = require("./webpack.config");
-var testConfig       = require("../test/config/specs");
-var artifacts        = require("../test/artifacts");
-var isDocker         = require("is-docker");
-
-
-var server;
-var SCREENSHOT_PATH = artifacts.pathSync("screenshots");
-
-exports.config = {
-    //
-    // ====================
-    // Runner Configuration
-    // ====================
-    //
-    // WebdriverIO allows it to run your tests in arbitrary locations (e.g. locally or
-    // on a remote machine).
-    runner: 'local',
-    //
-    // ==================
-    // Specify Test Files
-    // ==================
-    // Define which test specs should run. The pattern is relative to the directory
-    // from which `wdio` was called. Notice that, if you are calling `wdio` from an
-    // NPM script (see https://docs.npmjs.com/cli/run-script) then the current working
-    // directory is where your package.json resides, so `wdio` will be called from there.
-    //
-    specs: [
-        './test/functional/index.js'
-    ],
-    // Patterns to exclude.
-    exclude: [
-        // 'path/to/excluded/files'
-    ],
-    //
-    // ============
-    // Capabilities
-    // ============
-    // Define your capabilities here. WebdriverIO can run multiple capabilities at the same
-    // time. Depending on the number of capabilities, WebdriverIO launches several test
-    // sessions. Within your capabilities you can overwrite the spec and exclude options in
-    // order to group specific specs to a specific capability.
-    //
-    // First, you can define how many instances should be started at the same time. Let's
-    // say you have 3 different capabilities (Chrome, Firefox, and Safari) and you have
-    // set maxInstances to 1; wdio will spawn 3 processes. Therefore, if you have 10 spec
-    // files and you set maxInstances to 10, all spec files will get tested at the same time
-    // and 30 processes will get spawned. The property handles how many capabilities
-    // from the same test should run tests.
-    //
-    maxInstances: 10,
-    //
-    // If you have trouble getting all important capabilities together, check out the
-    // Sauce Labs platform configurator - a great tool to configure your capabilities:
-    // https://docs.saucelabs.com/reference/platforms-configurator
-    //
-    capabilities: [{
-        // maxInstances can get overwritten per capability. So if you have an in-house Selenium
-        // grid with only 5 firefox instances available you can make sure that not more than
-        // 5 instances get started at a time.
-        maxInstances: 5,
-        //
-        browserName: 'chrome',
-        // If outputDir is provided WebdriverIO can capture driver session logs
-        // it is possible to configure which logTypes to include/exclude.
-        // excludeDriverLogs: ['*'], // pass '*' to exclude all driver session logs
-        // excludeDriverLogs: ['bugreport', 'server'],
-    }],
-    //
-    // ===================
-    // Test Configurations
-    // ===================
-    // Define all options that are relevant for the WebdriverIO instance here
-    //
-    // Level of logging verbosity: trace | debug | info | warn | error | silent
-    logLevel: 'info',
-    //
-    // Set specific log levels per logger
-    // loggers:
-    // - webdriver, webdriverio
-    // - @wdio/applitools-service, @wdio/browserstack-service, @wdio/devtools-service, @wdio/sauce-service
-    // - @wdio/mocha-framework, @wdio/jasmine-framework
-    // - @wdio/local-runner, @wdio/lambda-runner
-    // - @wdio/sumologic-reporter
-    // - @wdio/cli, @wdio/config, @wdio/sync, @wdio/utils
-    // Level of logging verbosity: trace | debug | info | warn | error | silent
-    // logLevels: {
-        // webdriver: 'debug',
-        // '@wdio/applitools-service': 'info'
-    // },
-    //
-    // If you only want to run your tests until a specific amount of tests have failed use
-    // bail (default is 0 - don't bail, run all tests).
-    bail: 0,
-    //
-    screenshotPath: SCREENSHOT_PATH,
-    // Note: This is here because @orangemug currently runs Maputnik inside a docker container.
-    hostname: process.env.DOCKER_HOST || "0.0.0.0",
-    // Set a base URL in order to shorten url command calls. If your `url` parameter starts
-    // with `/`, the base url gets prepended, not including the path portion of your baseUrl.
-    // If your `url` parameter starts without a scheme or `/` (like `some/path`), the base url
-    // gets prepended directly.
-    baseUrl: 'http://localhost',
-    //
-    // Default timeout for all waitFor* commands.
-    waitforTimeout: 10000,
-    //
-    // Default timeout in milliseconds for request
-    // if Selenium Grid doesn't send response
-    connectionRetryTimeout: 90000,
-    //
-    // Default request retries count
-    connectionRetryCount: 3,
-    //
-    // Test runner services
-    // Services take over a specific job you don't want to take care of. They enhance
-    // your test setup with almost no effort. Unlike plugins, they don't add new
-    // commands. Instead, they hook themselves up into the test process.
-    //
-    // Framework you want to run your specs with.
-    // The following are supported: Mocha, Jasmine, and Cucumber
-    // see also: https://webdriver.io/docs/frameworks.html
-    //
-    // Make sure you have the wdio adapter package for the specific framework installed
-    // before running any tests.
-    framework: 'mocha',
-    //
-    // The number of times to retry the entire specfile when it fails as a whole
-    // specFileRetries: 1,
-    //
-    // Test reporter for stdout.
-    // The only one supported by default is 'dot'
-    // see also: https://webdriver.io/docs/dot-reporter.html
-    reporters: ['spec'],
-    
-    //
-    // Options to be passed to Mocha.
-    // See the full list at http://mochajs.org/
-    mochaOpts: {
-        ui: 'bdd',
-        // Because we don't know how long the initial build will take...
-        timeout: 4*60*1000
-    },
-    onPrepare: function (config, capabilities) {
-      return new Promise(function(resolve, reject) {
-        var compiler = webpack(webpackConfig);
-        const serverHost = isDocker() ? "0.0.0.0" : "localhost";
-
-        server = new WebpackDevServer(compiler, {
-          host: serverHost,
-          stats: {
-            colors: true
-          }
-        });
-
-        server.listen(testConfig.port, serverHost, function(err) {
-          if(err) {
-            reject(err);
-          }
-          else {
-            resolve();
-          }
-        });
-      })
-    },
-    onComplete: function(exitCode) {
-      server.close()
-    }
-    //
-    // =====
-    // Hooks
-    // =====
-    // WebdriverIO provides several hooks you can use to interfere with the test process in order to enhance
-    // it and to build services around it. You can either apply a single function or an array of
-    // methods to it. If one of them returns with a promise, WebdriverIO will wait until that promise got
-    // resolved to continue.
-    /**
-     * Gets executed once before all workers get launched.
-     * @param {Object} config wdio configuration object
-     * @param {Array.<Object>} capabilities list of capabilities details
-     */
-    // onPrepare: function (config, capabilities) {
-    // },
-    /**
-     * Gets executed just before initialising the webdriver session and test framework. It allows you
-     * to manipulate configurations depending on the capability or spec.
-     * @param {Object} config wdio configuration object
-     * @param {Array.<Object>} capabilities list of capabilities details
-     * @param {Array.<String>} specs List of spec file paths that are to be run
-     */
-    // beforeSession: function (config, capabilities, specs) {
-    // },
-    /**
-     * Gets executed before test execution begins. At this point you can access to all global
-     * variables like `browser`. It is the perfect place to define custom commands.
-     * @param {Array.<Object>} capabilities list of capabilities details
-     * @param {Array.<String>} specs List of spec file paths that are to be run
-     */
-    // before: function (capabilities, specs) {
-    // },
-    /**
-     * Runs before a WebdriverIO command gets executed.
-     * @param {String} commandName hook command name
-     * @param {Array} args arguments that command would receive
-     */
-    // beforeCommand: function (commandName, args) {
-    // },
-    
-    /**
-     * Hook that gets executed before the suite starts
-     * @param {Object} suite suite details
-     */
-    // beforeSuite: function (suite) {
-    // },
-    /**
-     * Function to be executed before a test (in Mocha/Jasmine) or a step (in Cucumber) starts.
-     * @param {Object} test test details
-     */
-    // beforeTest: function (test) {
-    // },
-    /**
-     * Hook that gets executed _before_ a hook within the suite starts (e.g. runs before calling
-     * beforeEach in Mocha)
-     */
-    // beforeHook: function () {
-    // },
-    /**
-     * Hook that gets executed _after_ a hook within the suite starts (e.g. runs after calling
-     * afterEach in Mocha)
-     */
-    // afterHook: function () {
-    // },
-    /**
-     * Function to be executed after a test (in Mocha/Jasmine) or a step (in Cucumber) starts.
-     * @param {Object} test test details
-     */
-    // afterTest: function (test) {
-    // },
-    /**
-     * Hook that gets executed after the suite has ended
-     * @param {Object} suite suite details
-     */
-    // afterSuite: function (suite) {
-    // },
-    
-    /**
-     * Runs after a WebdriverIO command gets executed
-     * @param {String} commandName hook command name
-     * @param {Array} args arguments that command would receive
-     * @param {Number} result 0 - command success, 1 - command error
-     * @param {Object} error error object if any
-     */
-    // afterCommand: function (commandName, args, result, error) {
-    // },
-    /**
-     * Gets executed after all tests are done. You still have access to all global variables from
-     * the test.
-     * @param {Number} result 0 - test pass, 1 - test fail
-     * @param {Array.<Object>} capabilities list of capabilities details
-     * @param {Array.<String>} specs List of spec file paths that ran
-     */
-    // after: function (result, capabilities, specs) {
-    // },
-    /**
-     * Gets executed right after terminating the webdriver session.
-     * @param {Object} config wdio configuration object
-     * @param {Array.<Object>} capabilities list of capabilities details
-     * @param {Array.<String>} specs List of spec file paths that ran
-     */
-    // afterSession: function (config, capabilities, specs) {
-    // },
-    /**
-     * Gets executed after all workers got shut down and the process is about to exit. An error
-     * thrown in the onComplete hook will result in the test run failing.
-     * @param {Object} exitCode 0 - success, 1 - fail
-     * @param {Object} config wdio configuration object
-     * @param {Array.<Object>} capabilities list of capabilities details
-     * @param {<Object>} results object containing test results
-     */
-    // onComplete: function(exitCode, config, capabilities, results) {
-    // },
-    /**
-    * Gets executed when a refresh happens.
-    * @param {String} oldSessionId session ID of the old session
-    * @param {String} newSessionId session ID of the new session
-    */
-    //onReload: function(oldSessionId, newSessionId) {
-    //}
-}

config/webpack.config.js

@@ -1,75 +0,0 @@
-"use strict";
-var webpack = require('webpack');
-var path = require('path');
-var rules = require('./webpack.rules');
-var HtmlWebpackPlugin = require('html-webpack-plugin');
-var HtmlWebpackInlineSVGPlugin = require('html-webpack-inline-svg-plugin');
-var CopyWebpackPlugin = require('copy-webpack-plugin');
-
-const HOST = process.env.HOST || "127.0.0.1";
-const PORT = process.env.PORT || "8888";
-
-module.exports = {
-  target: 'web',
-  mode: 'development',
-  entry: [
-    `webpack-dev-server/client?http://${HOST}:${PORT}`,
-    `webpack/hot/only-dev-server`,
-    `./src/index.jsx` // Your appʼs entry point
-  ],
-  devtool: process.env.WEBPACK_DEVTOOL || 'cheap-module-source-map',
-  output: {
-    path: path.join(__dirname, '..', 'public'),
-    filename: 'bundle.js'
-  },
-  resolve: {
-    extensions: ['.js', '.jsx']
-  },
-  module: {
-    noParse: [
-      /mapbox-gl\/dist\/mapbox-gl.js/
-    ],
-    rules: rules
-  },
-  node: {
-    fs: "empty",
-    net: 'empty',
-    tls: 'empty'
-  },
-  devServer: {
-    contentBase: "./public",
-    // do not print bundle build stats
-    noInfo: true,
-    // enable HMR
-    hot: true,
-    // embed the webpack-dev-server runtime into the bundle
-    inline: true,
-    // serve index.html in place of 404 responses to allow HTML5 history
-    historyApiFallback: true,
-    port: PORT,
-    host: HOST,
-    watchOptions: {
-      // Disabled polling by default as it causes lots of CPU usage and hence drains laptop batteries. To enable polling add WEBPACK_DEV_SERVER_POLLING to your environment
-      // See <https://webpack.js.org/configuration/watch/#watchoptions-poll> for details
-      poll: (!!process.env.WEBPACK_DEV_SERVER_POLLING ? true : false),
-      watch: false
-    }
-  },
-  plugins: [
-    new webpack.NoEmitOnErrorsPlugin(),
-    new webpack.HotModuleReplacementPlugin(),
-    new HtmlWebpackPlugin({
-      title: 'Maputnik',
-      template: './src/template.html'
-    }),
-    new HtmlWebpackInlineSVGPlugin({
-      runPreEmit: true,
-    }),
-    new CopyWebpackPlugin([
-      {
-        from: './src/manifest.json',
-        to: 'manifest.json'
-      }
-    ])
-  ]
-};

config/webpack.production.config.js

@@ -1,66 +0,0 @@
-var webpack = require('webpack');
-var path = require('path');
-var rules = require('./webpack.rules');
-var HtmlWebpackPlugin = require('html-webpack-plugin');
-var HtmlWebpackInlineSVGPlugin = require('html-webpack-inline-svg-plugin');
-var WebpackCleanupPlugin = require('webpack-cleanup-plugin');
-var BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
-var CopyWebpackPlugin = require('copy-webpack-plugin');
-var artifacts = require("../test/artifacts");
-
-var OUTPATH = artifacts.pathSync("/build");
-
-module.exports = {
-  entry: {
-    app: './src/index.jsx',
-  },
-  output: {
-    path: OUTPATH,
-    filename: '[name].[contenthash].js',
-    chunkFilename: '[contenthash].js'
-  },
-  resolve: {
-    extensions: ['.js', '.jsx']
-  },
-  module: {
-    noParse: [
-      /mapbox-gl\/dist\/mapbox-gl.js/
-    ],
-    rules: rules
-  },
-  node: {
-    fs: "empty",
-    net: 'empty',
-    tls: 'empty'
-  },
-  plugins: [
-    new webpack.NoEmitOnErrorsPlugin(),
-    new WebpackCleanupPlugin(),
-    new webpack.DefinePlugin({
-      'process.env': {
-        NODE_ENV: '"production"'
-      }
-    }),
-    new HtmlWebpackPlugin({
-      template: './src/template.html',
-      title: 'Maputnik'
-    }),
-    new HtmlWebpackInlineSVGPlugin({
-      runPreEmit: true,
-    }),
-    new CopyWebpackPlugin([
-      {
-        from: './src/manifest.json',
-        to: 'manifest.json'
-    }
-  ]),
-    new BundleAnalyzerPlugin({
-      analyzerMode: 'static',
-      defaultSizes: 'gzip',
-      openAnalyzer: false,
-      generateStatsFile: true,
-      reportFilename: 'bundle-stats.html',
-      statsFilename: 'bundle-stats.json',
-    })
-  ]
-};

config/webpack.profiling.config.js

@@ -1,20 +0,0 @@
-const webpackProdConfig = require('./webpack.production.config');
-const artifacts = require("../test/artifacts");
-
-const OUTPATH = artifacts.pathSync("/profiling");
-
-module.exports = {
-  ...webpackProdConfig,
-  output: {
-    ...webpackProdConfig.output,
-    path: OUTPATH,
-  },
-  resolve: {
-    ...webpackProdConfig.resolve,
-    alias: {
-      ...webpackProdConfig.resolve.alias,
-      'react-dom$': 'react-dom/profiling',
-      'scheduler/tracing': 'scheduler/tracing-profiling',
-    }
-  }
-};

config/webpack.rules.js

@@ -1,44 +0,0 @@
-const path = require("path");
-
-module.exports = [
-  {
-    test: /\.jsx?$/,
-    exclude: [
-      path.resolve(__dirname, '../node_modules')
-    ],
-    use: 'babel-loader'
-  },
-  {
-    test: /\.(eot|ttf|woff|woff2)$/,
-    use: 'file-loader?name=fonts/[name].[ext]'
-  },
-  {
-    test: /\.ico$/,
-    use: 'file-loader?name=[name].[ext]'
-  },
-  {
-    test: /\.(gif|jpg|png)$/,
-    use: 'file-loader?name=img/[name].[ext]'
-  },
-  {
-    test: /\.svg$/,
-    use: [
-      'svg-inline-loader'
-    ]
-  },
-  {
-    test: /[\/\\](node_modules|global|src)[\/\\].*\.scss$/,
-    use: [
-      'style-loader',
-      "css-loader",
-      "sass-loader"
-    ]
-  },
-  {
-    test: /[\/\\](node_modules|global|src)[\/\\].*\.css$/,
-    use: [
-      'style-loader',
-      'css-loader'
-    ]
-  }
-];

cypress.config.ts

@@ -0,0 +1,23 @@
+import { defineConfig } from "cypress";
+import { createRequire } from "module";
+const require = createRequire(import.meta.url);
+
+export default defineConfig({
+  env: {
+    codeCoverage: {
+      exclude: "cypress/**/*.*",
+    },
+  },
+  e2e: {
+    setupNodeEvents(on, config) {
+      // implement node event listeners here
+      require("@cypress/code-coverage/task")(on, config);
+      return config;
+    },
+    baseUrl: "http://localhost:8888",
+    retries: {
+      runMode: 2,
+      openMode: 0,
+    },
+  },
+});

cypress/e2e/accessibility.cy.ts

@@ -0,0 +1,40 @@
+import MaputnikDriver from "./driver";
+
+describe("accessibility", () => {
+  let { beforeAndAfter, given, when, get, should } = new MaputnikDriver();
+  beforeAndAfter();
+
+  describe("skip links", () => {
+    beforeEach(() => {
+      when.setStyle("layer");
+    });
+
+    it("skip link to layer list", () => {
+      const selector = "root:skip:layer-list";
+      should.exist(selector);
+      when.tab();
+      should.beFocused(selector);
+      when.click(selector);
+      should.beFocused("skip-target-layer-list");
+    });
+
+    // This fails for some reason only in Chrome, but passes in firefox. Adding a skip here to allow merge and later on we'll decide if we want to fix this or not.
+    it.skip("skip link to layer editor", () => {
+      const selector = "root:skip:layer-editor";
+      should.exist(selector);
+      when.tab().tab();
+      should.beFocused(selector);
+      when.click(selector);
+      should.beFocused("skip-target-layer-editor");
+    });
+
+    it("skip link to map view", () => {
+      const selector = "root:skip:map-view";
+      should.exist(selector);
+      when.tab().tab().tab();
+      should.beFocused(selector);
+      when.click(selector);
+      should.canvasBeFocused();
+    });
+  });
+});

cypress/e2e/driver.ts

@@ -0,0 +1,210 @@
+import { CypressHelper } from "@shellygo/cypress-test-utils";
+import { v1 as uuid } from "uuid";
+export default class MaputnikDriver {
+  private helper = new CypressHelper({ defaultDataAttribute: "data-wd-key" });
+  public beforeAndAfter = () => {
+    beforeEach(() => {
+      this.given.setupInterception();
+      this.when.setStyle("both");
+    });
+  };
+
+  public given = {
+    setupInterception: () => {
+      cy.intercept("GET", "http://localhost:8888/example-style.json", {
+        fixture: "example-style.json",
+      }).as("example-style.json");
+      cy.intercept("GET", "http://localhost:8888/example-layer-style.json", {
+        fixture: "example-layer-style.json",
+      });
+      cy.intercept("GET", "http://localhost:8888/geojson-style.json", {
+        fixture: "geojson-style.json",
+      });
+      cy.intercept("GET", "http://localhost:8888/raster-style.json", {
+        fixture: "raster-style.json",
+      });
+      cy.intercept("GET", "http://localhost:8888/geojson-raster-style.json", {
+        fixture: "geojson-raster-style.json",
+      });
+      cy.intercept({ method: "GET", url: "*example.local/*" }, []);
+      cy.intercept({ method: "GET", url: "*example.com/*" }, []);
+    },
+  };
+
+  public when = {
+    within: (selector: string, fn: () => void) => {
+      this.helper.when.within(fn, selector);
+    },
+    tab: () => cy.get("body").tab(),
+    waitForExampleFileRequset: () => {
+      this.helper.when.waitForResponse("example-style.json");
+    },
+    chooseExampleFile: () => {
+      cy.get("input[type='file']").selectFile(
+        "cypress/fixtures/example-style.json",
+        { force: true }
+      );
+    },
+    setStyle: (
+      styleProperties: "geojson" | "raster" | "both" | "layer" | "",
+      zoom?: number
+    ) => {
+      let url = "?debug";
+      switch (styleProperties) {
+        case "geojson":
+          url += "&style=http://localhost:8888/geojson-style.json";
+          break;
+        case "raster":
+          url += "&style=http://localhost:8888/raster-style.json";
+          break;
+        case "both":
+          url += "&style=http://localhost:8888/geojson-raster-style.json";
+          break;
+        case "layer":
+          url += "&style=http://localhost:8888/example-layer-style.json";
+          break;
+      }
+      if (zoom) {
+        url += "#" + zoom + "/41.3805/2.1635";
+      }
+      cy.visit("http://localhost:8888/" + url);
+      if (styleProperties) {
+        cy.on("window:confirm", () => true);
+      }
+      cy.get(".maputnik-toolbar-link").should("be.visible");
+    },
+    fillLayersModal: (opts: {type: string, layer?: string, id?: string}) => {
+      var type = opts.type;
+      var layer = opts.layer;
+      var id;
+      if (opts.id) {
+        id = opts.id;
+      } else {
+        id = `${type}:${uuid()}`;
+      }
+
+      cy.get(
+        this.get.dataAttribute("add-layer.layer-type", "select")
+      ).select(type);
+      cy.get(this.get.dataAttribute("add-layer.layer-id", "input")).type(id);
+      if (layer) {
+        cy.get(
+          this.get.dataAttribute("add-layer.layer-source-block", "input")
+        ).type(layer);
+      }
+      this.when.click("add-layer");
+
+      return id;
+    },
+
+    typeKeys: (keys: string) => {
+      cy.get("body").type(keys);
+    },
+
+    click: (selector: string) => {
+      this.helper.when.click(selector);
+    },
+
+    clickZoomin: () => {
+      cy.get(".maplibregl-ctrl-zoom-in").click();
+    },
+
+    selectWithin: (selector: string, value: string) => {
+      this.when.within(selector, () => {
+        cy.get("select").select(value);
+      });
+    },
+
+    select: (selector: string, value: string) => {
+      this.helper.get.element(selector).select(value);
+    },
+
+    focus: (selector: string) => {
+      this.helper.when.focus(selector);
+    },
+
+    setValue: (selector: string, text: string) => {
+      cy.get(selector).clear().type(text, { parseSpecialCharSequences: false });
+    },
+
+    closeModal: (key: string) => {
+      this.helper.when.waitUntil(() => this.helper.get.element(key));
+      this.when.click(key + ".close-modal");
+    },
+
+    openLayersModal: () => {
+      this.helper.when.click("layer-list:add-layer");
+
+      cy.get(this.get.dataAttribute("modal:add-layer")).should("exist");
+      cy.get(this.get.dataAttribute("modal:add-layer")).should("be.visible");
+    },
+  };
+
+  public get = {
+    isMac: () => {
+      return Cypress.platform === "darwin";
+    },
+    styleFromWindow: (win: Window) => {
+      const styleId = win.localStorage.getItem("maputnik:latest_style");
+      const styleItem = win.localStorage.getItem(`maputnik:style:${styleId}`);
+      const obj = JSON.parse(styleItem || "");
+      return obj;
+    },
+    exampleFileUrl: () => {
+      return "http://localhost:8888/example-style.json";
+    },
+    dataAttribute: (key: string, selector?: string): string => {
+      return `*[data-wd-key='${key}'] ${selector || ""}`;
+    },
+  };
+
+  public should = {
+    canvasBeFocused: () => {
+      this.when.within("maplibre:map", () => {
+        cy.get("canvas").should("be.focused");
+      });
+    },
+    notExist: (selector: string) => {
+      cy.get(selector).should("not.exist");
+    },
+    beFocused: (selector: string) => {
+      this.helper.get.element(selector).should("have.focus");
+    },
+
+    notBeFocused: (selector: string) => {
+      this.helper.get.element(selector).should("not.have.focus");
+    },
+
+    beVisible: (selector: string) => {
+      this.helper.get.element(selector).should("be.visible");
+    },
+
+    notBeVisible: (selector: string) => {
+      this.helper.get.element(selector).should("not.be.visible");
+    },
+
+    equalStyleStore: (getter: (obj: any) => any, styleObj: any) => {
+      cy.window().then((win: any) => {
+        const obj = this.get.styleFromWindow(win);
+        assert.deepEqual(getter(obj), styleObj);
+      });
+    },
+
+    styleStoreEqualToExampleFileData: () => {
+      cy.window().then((win: any) => {
+        const obj = this.get.styleFromWindow(win);
+        cy.fixture("example-style.json").should("deep.equal", obj);
+      });
+    },
+
+    exist: (selector: string) => {
+      this.helper.get.element(selector).should("exist");
+    },
+    beSelected: (selector: string, value: string) => {
+      this.helper.get.element(selector).find(`option[value="${value}"]`).should("be.selected");
+    },
+    containText: (selector: string, text: string) => {
+      this.helper.get.element(selector).should("contain.text", text);
+    }
+  };
+}

cypress/e2e/history.cy.ts

@@ -0,0 +1,97 @@
+import MaputnikDriver from "./driver";
+
+describe("history", () => {
+  let { beforeAndAfter, given, when, get, should } = new MaputnikDriver();
+  beforeAndAfter();
+
+  let undoKeyCombo: string;
+  let redoKeyCombo: string;
+
+  before(() => {
+    const isMac = get.isMac();
+    undoKeyCombo = isMac ? "{meta}z" : "{ctrl}z";
+    redoKeyCombo = isMac ? "{meta}{shift}z" : "{ctrl}y";
+  });
+
+  it("undo/redo", () => {
+    when.setStyle("geojson");
+    when.openLayersModal();
+
+    should.equalStyleStore((a: any) => a.layers, []);
+
+    when.fillLayersModal({
+      id: "step 1",
+      type: "background",
+    });
+
+    should.equalStyleStore(
+      (a: any) => a.layers,
+      [
+        {
+          id: "step 1",
+          type: "background",
+        },
+      ]
+    );
+
+    when.openLayersModal();
+    when.fillLayersModal({
+      id: "step 2",
+      type: "background",
+    });
+
+    should.equalStyleStore(
+      (a: any) => a.layers,
+      [
+        {
+          id: "step 1",
+          type: "background",
+        },
+        {
+          id: "step 2",
+          type: "background",
+        },
+      ]
+    );
+
+    when.typeKeys(undoKeyCombo);
+    should.equalStyleStore(
+      (a: any) => a.layers,
+      [
+        {
+          id: "step 1",
+          type: "background",
+        },
+      ]
+    );
+
+    when.typeKeys(undoKeyCombo);
+    should.equalStyleStore((a: any) => a.layers, []);
+
+    when.typeKeys(redoKeyCombo);
+    should.equalStyleStore(
+      (a: any) => a.layers,
+      [
+        {
+          id: "step 1",
+          type: "background",
+        },
+      ]
+    );
+
+    when.typeKeys(redoKeyCombo);
+    should.equalStyleStore(
+      (a: any) => a.layers,
+      [
+        {
+          id: "step 1",
+          type: "background",
+        },
+        {
+          id: "step 2",
+          type: "background",
+        },
+      ]
+    );
+  });
+});

cypress/e2e/keyboard.cy.ts

@@ -0,0 +1,61 @@
+import MaputnikDriver from "./driver";
+
+describe("keyboard", () => {
+  let { beforeAndAfter, given, when, get, should } = new MaputnikDriver();
+  beforeAndAfter();
+  describe("shortcuts", () => {
+    beforeEach(() => {
+      given.setupInterception();
+      when.setStyle("");
+    });
+
+    it("ESC should unfocus", () => {
+      const targetSelector = "maputnik-select";
+      when.focus(targetSelector);
+      should.beFocused(targetSelector);
+
+      when.typeKeys("{esc}");
+      expect(should.notBeFocused(targetSelector));
+    });
+
+    it("'?' should show shortcuts modal", () => {
+      when.typeKeys("?");
+      should.beVisible("modal:shortcuts");
+    });
+
+    it("'o' should show open modal", () => {
+      when.typeKeys("o");
+      should.beVisible("modal:open");
+    });
+
+    it("'e' should show export modal", () => {
+      when.typeKeys("e");
+      should.beVisible("modal:export");
+    });
+
+    it("'d' should show sources modal", () => {
+      when.typeKeys("d");
+      should.beVisible("modal:sources");
+    });
+
+    it("'s' should show settings modal", () => {
+      when.typeKeys("s");
+      should.beVisible("modal:settings");
+    });
+
+    it("'i' should change map to inspect mode", () => {
+      when.typeKeys("i");
+      should.beSelected("nav:inspect", "inspect");
+    });
+
+    it("'m' should focus map", () => {
+      when.typeKeys("m");
+      should.canvasBeFocused();
+    });
+
+    it("'!' should show debug modal", () => {
+      when.typeKeys("!");
+      should.beVisible("modal:debug");
+    });
+  });
+});

cypress/e2e/layers.cy.ts

@@ -0,0 +1,491 @@
+import { v1 as uuid } from "uuid";
+import MaputnikDriver from "./driver";
+
+describe("layers", () => {
+  let { beforeAndAfter, given, when, get, should } = new MaputnikDriver();
+  beforeAndAfter();
+  beforeEach(() => {
+    when.setStyle("both");
+    when.openLayersModal();
+  });
+
+  describe("ops", () => {
+    it("delete", () => {
+      var id = when.fillLayersModal({
+        type: "background",
+      });
+
+      should.equalStyleStore(
+        (a: any) => a.layers,
+        [
+          {
+            id: id,
+            type: "background",
+          },
+        ]
+      );
+
+      when.click("layer-list-item:" + id + ":delete");
+
+      should.equalStyleStore((a: any) => a.layers, []);
+    });
+
+    it("duplicate", () => {
+      var styleObj;
+      var id = when.fillLayersModal({
+        type: "background",
+      });
+
+      should.equalStyleStore(
+        (a: any) => a.layers,
+        [
+          {
+            id: id,
+            type: "background",
+          },
+        ]
+      );
+
+      when.click("layer-list-item:" + id + ":copy");
+
+      should.equalStyleStore(
+        (a: any) => a.layers,
+        [
+          {
+            id: id + "-copy",
+            type: "background",
+          },
+          {
+            id: id,
+            type: "background",
+          },
+        ]
+      );
+    });
+
+    it("hide", () => {
+      var styleObj;
+      var id = when.fillLayersModal({
+        type: "background",
+      });
+
+      should.equalStyleStore(
+        (a: any) => a.layers,
+        [
+          {
+            id: id,
+            type: "background",
+          },
+        ]
+      );
+
+      when.click("layer-list-item:" + id + ":toggle-visibility");
+
+      should.equalStyleStore(
+        (a: any) => a.layers,
+        [
+          {
+            id: id,
+            type: "background",
+            layout: {
+              visibility: "none",
+            },
+          },
+        ]
+      );
+
+      when.click("layer-list-item:" + id + ":toggle-visibility");
+
+      should.equalStyleStore(
+        (a: any) => a.layers,
+        [
+          {
+            id: id,
+            type: "background",
+            layout: {
+              visibility: "visible",
+            },
+          },
+        ]
+      );
+    });
+  });
+
+  describe("background", () => {
+    it("add", () => {
+      var id = when.fillLayersModal({
+        type: "background",
+      });
+
+      should.equalStyleStore(
+        (a: any) => a.layers,
+        [
+          {
+            id: id,
+            type: "background",
+          },
+        ]
+      );
+    });
+
+    describe("modify", () => {
+      function createBackground() {
+        // Setup
+        var id = uuid();
+
+        when.selectWithin("add-layer.layer-type", "background");
+        when.setValue(
+          get.dataAttribute("add-layer.layer-id", "input"),
+          "background:" + id
+        );
+
+        when.click("add-layer");
+
+        should.equalStyleStore(
+          (a: any) => a.layers,
+          [
+            {
+              id: "background:" + id,
+              type: "background",
+            },
+          ]
+        );
+        return id;
+      }
+
+      // ====> THESE SHOULD BE FROM THE SPEC
+      describe("layer", () => {
+        it("expand/collapse");
+        it("id", () => {
+          var bgId = createBackground();
+
+          when.click("layer-list-item:background:" + bgId);
+
+          var id = uuid();
+          when.setValue(
+            get.dataAttribute("layer-editor.layer-id", "input"),
+            "foobar:" + id
+          );
+          when.click("min-zoom");
+
+          should.equalStyleStore(
+            (a: any) => a.layers,
+            [
+              {
+                id: "foobar:" + id,
+                type: "background",
+              },
+            ]
+          );
+        });
+
+        it("min-zoom", () => {
+          var bgId = createBackground();
+
+          when.click("layer-list-item:background:" + bgId);
+          when.setValue(
+            get.dataAttribute("min-zoom", 'input[type="text"]'),
+            "1"
+          );
+
+          when.click("layer-editor.layer-id");
+
+          should.equalStyleStore(
+            (a: any) => a.layers,
+            [
+              {
+                id: "background:" + bgId,
+                type: "background",
+                minzoom: 1,
+              },
+            ]
+          );
+
+          // AND RESET!
+          // driver.setValue(driver.get.dataAttribute("min-zoom", "input"), "")
+          // driver.click(driver.get.dataAttribute("max-zoom", "input"));
+
+          // driver.isStyleStoreEqual((a: any) => a.layers, [
+          //   {
+          //     "id": 'background:'+bgId,
+          //     "type": 'background'
+          //   }
+          // ]);
+        });
+
+        it("max-zoom", () => {
+          var bgId = createBackground();
+
+          when.click("layer-list-item:background:" + bgId);
+          when.setValue(
+            get.dataAttribute("max-zoom", 'input[type="text"]'),
+            "1"
+          );
+
+          when.click("layer-editor.layer-id");
+
+          should.equalStyleStore(
+            (a: any) => a.layers,
+            [
+              {
+                id: "background:" + bgId,
+                type: "background",
+                maxzoom: 1,
+              },
+            ]
+          );
+        });
+
+        it("comments", () => {
+          var bgId = createBackground();
+          var id = uuid();
+
+          when.click("layer-list-item:background:" + bgId);
+          when.setValue(get.dataAttribute("layer-comment", "textarea"), id);
+
+          when.click("layer-editor.layer-id");
+
+          should.equalStyleStore(
+            (a: any) => a.layers,
+            [
+              {
+                id: "background:" + bgId,
+                type: "background",
+                metadata: {
+                  "maputnik:comment": id,
+                },
+              },
+            ]
+          );
+
+          // Unset it again.
+          // TODO: This fails
+          // driver.setValue(driver.getDataAttribute("layer-comment", "textarea"), "");
+          // driver.click(driver.getDataAttribute("min-zoom", "input"));
+
+          // driver.isStyleStoreEqual((a: any) => a.layers, [
+          //   {
+          //     "id": 'background:'+bgId,
+          //     "type": 'background'
+          //   }
+          // ]);
+        });
+
+        it("color", () => {
+          var bgId = createBackground();
+
+          when.click("layer-list-item:background:" + bgId);
+
+          when.click("spec-field:background-color");
+
+          should.equalStyleStore(
+            (a: any) => a.layers,
+            [
+              {
+                id: "background:" + bgId,
+                type: "background",
+              },
+            ]
+          );
+        });
+      });
+
+      describe("filter", () => {
+        it("expand/collapse");
+        it("compound filter");
+      });
+
+      describe("paint", () => {
+        it("expand/collapse");
+        it("color");
+        it("pattern");
+        it("opacity");
+      });
+      // <=====
+
+      describe("json-editor", () => {
+        it("expand/collapse");
+        it("modify");
+
+        // TODO
+        it.skip("parse error", () => {
+          var bgId = createBackground();
+
+          when.click("layer-list-item:background:" + bgId);
+
+          var errorSelector = ".CodeMirror-lint-marker-error";
+          should.notExist(errorSelector);
+
+          when.click(".CodeMirror");
+          when.typeKeys(
+            "\uE013\uE013\uE013\uE013\uE013\uE013\uE013\uE013\uE013\uE013\uE013\uE013 {"
+          );
+          should.exist(errorSelector);
+        });
+      });
+    });
+  });
+
+  describe("fill", () => {
+    it("add", () => {
+      var id = when.fillLayersModal({
+        type: "fill",
+        layer: "example",
+      });
+
+      should.equalStyleStore(
+        (a: any) => a.layers,
+        [
+          {
+            id: id,
+            type: "fill",
+            source: "example",
+          },
+        ]
+      );
+    });
+
+    // TODO: Change source
+    it("change source");
+  });
+
+  describe("line", () => {
+    it("add", () => {
+      var id = when.fillLayersModal({
+        type: "line",
+        layer: "example",
+      });
+
+      should.equalStyleStore(
+        (a: any) => a.layers,
+        [
+          {
+            id: id,
+            type: "line",
+            source: "example",
+          },
+        ]
+      );
+    });
+
+    it("groups", () => {
+      // TODO
+      // Click each of the layer groups.
+    });
+  });
+
+  describe("symbol", () => {
+    it("add", () => {
+      var id = when.fillLayersModal({
+        type: "symbol",
+        layer: "example",
+      });
+
+      should.equalStyleStore(
+        (a: any) => a.layers,
+        [
+          {
+            id: id,
+            type: "symbol",
+            source: "example",
+          },
+        ]
+      );
+    });
+  });
+
+  describe("raster", () => {
+    it("add", () => {
+      var id = when.fillLayersModal({
+        type: "raster",
+        layer: "raster",
+      });
+
+      should.equalStyleStore(
+        (a: any) => a.layers,
+        [
+          {
+            id: id,
+            type: "raster",
+            source: "raster",
+          },
+        ]
+      );
+    });
+  });
+
+  describe("circle", () => {
+    it("add", () => {
+      var id = when.fillLayersModal({
+        type: "circle",
+        layer: "example",
+      });
+
+      should.equalStyleStore(
+        (a: any) => a.layers,
+        [
+          {
+            id: id,
+            type: "circle",
+            source: "example",
+          },
+        ]
+      );
+    });
+  });
+
+  describe("fill extrusion", () => {
+    it("add", () => {
+      var id = when.fillLayersModal({
+        type: "fill-extrusion",
+        layer: "example",
+      });
+
+      should.equalStyleStore(
+        (a: any) => a.layers,
+        [
+          {
+            id: id,
+            type: "fill-extrusion",
+            source: "example",
+          },
+        ]
+      );
+    });
+  });
+
+  describe("groups", () => {
+    it("simple", () => {
+      when.setStyle("geojson");
+
+      when.openLayersModal();
+      when.fillLayersModal({
+        id: "foo",
+        type: "background",
+      });
+
+      when.openLayersModal();
+      when.fillLayersModal({
+        id: "foo_bar",
+        type: "background",
+      });
+
+      when.openLayersModal();
+      when.fillLayersModal({
+        id: "foo_bar_baz",
+        type: "background",
+      });
+
+      should.beVisible("layer-list-item:foo");
+
+      should.notBeVisible("layer-list-item:foo_bar");
+      should.notBeVisible("layer-list-item:foo_bar_baz");
+
+      when.click("layer-list-group:foo-0");
+
+      should.beVisible("layer-list-item:foo");
+      should.beVisible("layer-list-item:foo_bar");
+      should.beVisible("layer-list-item:foo_bar_baz");
+    });
+  });
+});

cypress/e2e/map.cy.ts

@@ -0,0 +1,23 @@
+import MaputnikDriver from "./driver";
+
+describe("map", () => {
+  let { beforeAndAfter, given, when, get, should } = new MaputnikDriver();
+  beforeAndAfter();
+  describe("zoom level", () => {
+    it("via url", () => {
+      var zoomLevel = 12.37;
+      when.setStyle("geojson", zoomLevel);
+      should.beVisible("maplibre:ctrl-zoom");
+      should.containText("maplibre:ctrl-zoom", "Zoom: " + zoomLevel);
+    });
+
+    it("via map controls", () => {
+      var zoomLevel = 12.37;
+      when.setStyle("geojson", zoomLevel);
+
+      should.beVisible("maplibre:ctrl-zoom");
+      when.clickZoomin();
+      should.containText("maplibre:ctrl-zoom", "Zoom: "+(zoomLevel + 1));
+    });
+  });
+});

cypress/e2e/modals.cy.ts

@@ -0,0 +1,161 @@
+import MaputnikDriver from "./driver";
+
+describe("modals", () => {
+  let { beforeAndAfter, given, when, get, should } = new MaputnikDriver();
+  beforeAndAfter();
+  beforeEach(() => {
+    when.setStyle("");
+  });
+  describe("open", () => {
+    beforeEach(() => {
+      when.click("nav:open");
+    });
+
+    it("close", () => {
+      when.closeModal("modal:open");
+      should.notExist("modal:open");
+    });
+
+    it.skip("upload", () => {
+      // HM: I was not able to make the following choose file actually to select a file and close the modal...
+      when.chooseExampleFile();
+
+      should.styleStoreEqualToExampleFileData();
+    });
+
+    it("load from url", () => {
+      var styleFileUrl = get.exampleFileUrl();
+
+      when.setValue(get.dataAttribute("modal:open.url.input"), styleFileUrl);
+      when.click("modal:open.url.button");
+      when.waitForExampleFileRequset();
+
+      should.styleStoreEqualToExampleFileData();
+    });
+  });
+
+  describe("shortcuts", () => {
+    it("open/close", () => {
+      when.setStyle("");
+      when.typeKeys("?");
+      when.closeModal("modal:shortcuts");
+      should.notExist("modal:shortcuts");
+    });
+  });
+
+  describe("export", () => {
+    beforeEach(() => {
+      when.click("nav:export");
+    });
+
+    it("close", () => {
+      when.closeModal("modal:export");
+      should.notExist("modal:export");
+    });
+
+    // TODO: Work out how to download a file and check the contents
+    it("download");
+  });
+
+  describe("sources", () => {
+    it("active sources");
+    it("public source");
+    it("add new source");
+  });
+
+  describe("inspect", () => {
+    it("toggle", () => {
+      when.setStyle("geojson");
+
+      when.selectWithin("nav:inspect", "inspect");
+    });
+  });
+
+  describe("style settings", () => {
+    beforeEach(() => {
+      when.click("nav:settings");
+    });
+
+    it("name", () => {
+      when.click("field-doc-button-Name");
+
+      should.containText("spec-field-doc", "name for the style");
+    });
+
+    it("show name specifications", () => {
+      when.setValue(get.dataAttribute("modal:settings.name"), "foobar");
+      when.click("modal:settings.owner");
+
+      should.equalStyleStore((obj) => obj.name, "foobar");
+    });
+
+    it("owner", () => {
+      when.setValue(get.dataAttribute("modal:settings.owner"), "foobar");
+      when.click("modal:settings.name");
+
+      should.equalStyleStore((obj) => obj.owner, "foobar");
+    });
+    it("sprite url", () => {
+      when.setValue(
+        get.dataAttribute("modal:settings.sprite"),
+        "http://example.com"
+      );
+      when.click("modal:settings.name");
+
+      should.equalStyleStore((obj) => obj.sprite, "http://example.com");
+    });
+    it("glyphs url", () => {
+      var glyphsUrl = "http://example.com/{fontstack}/{range}.pbf";
+      when.setValue(get.dataAttribute("modal:settings.glyphs"), glyphsUrl);
+      when.click("modal:settings.name");
+
+      should.equalStyleStore((obj) => obj.glyphs, glyphsUrl);
+    });
+
+    it("maptiler access token", () => {
+      var apiKey = "testing123";
+      when.setValue(
+        get.dataAttribute(
+          "modal:settings.maputnik:openmaptiles_access_token"
+        ),
+        apiKey
+      );
+      when.click("modal:settings.name");
+
+      should.equalStyleStore(
+        (obj) => obj.metadata["maputnik:openmaptiles_access_token"],
+        apiKey
+      );
+    });
+
+    it("thunderforest access token", () => {
+      var apiKey = "testing123";
+      when.setValue(
+        get.dataAttribute(
+          "modal:settings.maputnik:thunderforest_access_token"
+        ),
+        apiKey
+      );
+      when.click("modal:settings.name");
+
+      should.equalStyleStore(
+        (obj) => obj.metadata["maputnik:thunderforest_access_token"],
+        apiKey
+      );
+    });
+
+    it("style renderer", () => {
+      cy.on("uncaught:exception", () => false); // this is due to the fact that this is an invalid style for openlayers
+      when.select("modal:settings.maputnik:renderer", "ol");
+      should.beSelected("modal:settings.maputnik:renderer", "ol");
+
+      when.click("modal:settings.name");
+
+      should.equalStyleStore((obj) => obj.metadata["maputnik:renderer"], "ol");
+    });
+  });
+
+  describe("sources", () => {
+    it("toggle");
+  });
+});

cypress/fixtures/example-layer-style.json

@@ -0,0 +1,18 @@
+{
+  "id": "test-style",
+  "version": 8,
+  "name": "Test Style",
+  "metadata": {
+    "maputnik:renderer": "mlgljs"
+  },
+  "sources": {},
+  "glyphs": "https://example.local/fonts/{fontstack}/{range}.pbf",
+  "sprites": "https://example.local/fonts/{fontstack}/{range}.pbf",
+  "layers": [
+    {
+      "id": "background",
+      "type": "background"
+    }
+  ]
+}
+

cypress/fixtures/example-style.json

@@ -3,7 +3,7 @@
   "version": 8,
   "name": "Test Style",
   "metadata": {
-    "maputnik:renderer": "mbgljs"
+    "maputnik:renderer": "mlgljs"
   },
   "sources": {},
   "glyphs": "https://example.local/fonts/{fontstack}/{range}.pbf",

cypress/fixtures/geojson-raster-style.json

@@ -0,0 +1,34 @@
+{
+    "id": "test-style",
+    "version": 8,
+    "name": "Test Style",
+    "metadata": {
+        "maputnik:renderer": "mlgljs"
+    },
+    "sources": {
+        "example": {
+            "type": "vector",
+            "data": {
+                "type": "FeatureCollection",
+                "features":[{
+                    "type": "Feature",
+                    "properties": {
+                        "name": "Dinagat Islands"
+                    },
+                    "geometry":{
+                        "type": "Point",
+                        "coordinates": [125.6, 10.1]
+                    }
+                }]
+            }
+        },
+        "raster": {
+            "tileSize": 256,
+            "tiles": ["http://localhost/example/{x}/{y}/{z}"],
+            "type": "raster"
+        }
+    },
+    "glyphs": "https://example.local/fonts/{fontstack}/{range}.pbf",
+    "sprites": "https://example.local/fonts/{fontstack}/{range}.pbf",
+    "layers": []
+  }

cypress/fixtures/geojson-style.json

@@ -0,0 +1,29 @@
+{
+    "id": "test-style",
+    "version": 8,
+    "name": "Test Style",
+    "metadata": {
+        "maputnik:renderer": "mlgljs"
+    },
+    "sources": {
+        "example": {
+            "type": "vector",
+            "data": {
+                "type": "FeatureCollection",
+                "features":[{
+                    "type": "Feature",
+                    "properties": {
+                        "name": "Dinagat Islands"
+                    },
+                    "geometry":{
+                        "type": "Point",
+                        "coordinates": [125.6, 10.1]
+                    }
+                }]
+            }
+        }
+    },
+    "glyphs": "https://example.local/fonts/{fontstack}/{range}.pbf",
+    "sprites": "https://example.local/fonts/{fontstack}/{range}.pbf",
+    "layers": []
+  }

cypress/fixtures/raster-style.json

@@ -0,0 +1,18 @@
+{
+    "id": "test-style",
+    "version": 8,
+    "name": "Test Style",
+    "metadata": {
+      "maputnik:renderer": "mlgljs"
+    },
+    "sources": {
+        "raster": {
+            "tileSize": 256,
+            "tiles": ["http://localhost/example/{x}/{y}/{z}"],
+            "type": "raster"
+        }
+      },
+    "glyphs": "https://example.local/fonts/{fontstack}/{range}.pbf",
+    "sprites": "https://example.local/fonts/{fontstack}/{range}.pbf",
+    "layers": []
+  }

cypress/support/commands.ts

@@ -0,0 +1,37 @@
+/// <reference types="cypress" />
+// ***********************************************
+// This example commands.ts shows you how to
+// create various custom commands and overwrite
+// existing commands.
+//
+// For more comprehensive examples of custom
+// commands please read more here:
+// https://on.cypress.io/custom-commands
+// ***********************************************
+//
+//
+// -- This is a parent command --
+// Cypress.Commands.add('login', (email, password) => { ... })
+//
+//
+// -- This is a child command --
+// Cypress.Commands.add('drag', { prevSubject: 'element'}, (subject, options) => { ... })
+//
+//
+// -- This is a dual command --
+// Cypress.Commands.add('dismiss', { prevSubject: 'optional'}, (subject, options) => { ... })
+//
+//
+// -- This will overwrite an existing command --
+// Cypress.Commands.overwrite('visit', (originalFn, url, options) => { ... })
+//
+// declare global {
+//   namespace Cypress {
+//     interface Chainable {
+//       login(email: string, password: string): Chainable<void>
+//       drag(subject: string, options?: Partial<TypeOptions>): Chainable<Element>
+//       dismiss(subject: string, options?: Partial<TypeOptions>): Chainable<Element>
+//       visit(originalFn: CommandOriginalFn, url: string, options: Partial<VisitOptions>): Chainable<Element>
+//     }
+//   }
+// }

cypress/support/e2e.ts

@@ -0,0 +1,22 @@
+// ***********************************************************
+// This example support/e2e.ts is processed and
+// loaded automatically before your test files.
+//
+// This is a great place to put global configuration and
+// behavior that modifies Cypress.
+//
+// You can change the location of this file or turn off
+// automatically serving support files with the
+// 'supportFile' configuration option.
+//
+// You can read more here:
+// https://on.cypress.io/configuration
+// ***********************************************************
+
+// Import commands.js using ES2015 syntax:
+import "@cypress/code-coverage/support";
+import "cypress-plugin-tab";
+import "./commands";
+
+// Alternatively you can use CommonJS syntax:
+// require('./commands')

index.html

@@ -2,9 +2,10 @@
 <html lang="en">
 <head>
   <meta charset="utf-8">
-  <title><%= htmlWebpackPlugin.options.title %></title>
+  <title>Maputnik</title>
   <meta name="viewport" content="width=device-width, initial-scale=1">
-  <link rel="manifest" href="manifest.json">
+  <link rel="manifest" href="src/manifest.json">
+  <link rel="icon" href="src/favicon.ico" type="image/x-icon" />
   <style>
     html {
       background-color: rgb(28, 31, 36);
@@ -23,7 +24,7 @@
       align-items: center;
     }
 
-    .loading__logo svg {
+    .loading__logo img {
       width: 200px;
       height: 200px;
     }
@@ -38,9 +39,9 @@
   </style>
 </head>
 <body>
-  <!-- TODO: Import dynamically -->
   <!-- From <https://github.com/hail2u/color-blindness-emulation> -->
   <svg
+    aria-hidden="true"
     xmlns="http://www.w3.org/2000/svg"
     version="1.1">
     <defs>
@@ -122,10 +123,10 @@
   <div id="app"></div>
   <div class="loading">
     <div class="loading__logo">
-      <!-- replaced by 'html-webpack-inline-svg-plugin' -->
       <img inline src="node_modules/maputnik-design/logos/logo-loading.svg" />
     </div>
     <div class="loading__text">Loading&hellip;</div>
   </div>
+  <script type="module" src="/src/index.jsx"></script>
 </body>
 </html>

package.json

@@ -1,18 +1,18 @@
 {
   "name": "maputnik",
-  "version": "1.7.0-beta4",
+  "version": "2.0.0-pre.2",
-  "description": "A MapboxGL visual style editor",
+  "description": "A MapLibre GL visual style editor",
+  "type": "module",
   "main": "''",
   "scripts": {
-    "stats": "webpack --config config/webpack.production.config.js --profile --json > stats.json",
+    "start": "vite",
-    "build": "webpack --config config/webpack.production.config.js --progress --profile --colors",
+    "build": "tsc && vite build",
-    "profiling-build": "webpack --config config/webpack.profiling.config.js --progress --profile --colors",
+    "lint": "eslint ./src --ext ts,tsx,js,jsx --report-unused-disable-directives --max-warnings 0 && npm run lint-css",
-    "test": "cross-env NODE_ENV=test wdio config/wdio.conf.js",
+    "test": "cypress run",
-    "test-watch": "cross-env NODE_ENV=test wdio config/wdio.conf.js --watch",
+    "cy:open": "cypress open",
-    "start": "webpack-dev-server --progress --profile --colors --config config/webpack.config.js",
-    "lint-js": "eslint --ext js --ext jsx src test",
     "lint-css": "stylelint \"src/styles/*.scss\"",
-    "lint": "npm run lint-js && npm run lint-css"
+    "storybook": "storybook dev -h 0.0.0.0 -p 6006",
+    "build-storybook": "storybook build -o build/storybook"
   },
   "repository": {
     "type": "git",
@@ -22,47 +22,50 @@
   "license": "MIT",
   "homepage": "https://github.com/maputnik/editor#readme",
   "dependencies": {
-    "@babel/runtime": "^7.8.4",
     "@mapbox/mapbox-gl-rtl-text": "^0.2.3",
-    "@mapbox/mapbox-gl-style-spec": "^13.12.0",
+    "@maplibre/maplibre-gl-style-spec": "^17.0.1",
-    "@mdi/react": "^1.4.0",
+    "@mdi/js": "^6.6.96",
-    "array-move": "^2.2.1",
+    "@mdi/react": "^1.5.0",
-    "classnames": "^2.2.6",
+    "array-move": "^4.0.0",
-    "codemirror": "^5.52.0",
+    "buffer": "^6.0.3",
-    "color": "^3.1.2",
+    "classnames": "^2.3.1",
-    "detect-browser": "^5.0.0",
+    "codemirror": "^5.65.2",
-    "file-saver": "^2.0.2",
+    "color": "^4.2.3",
+    "detect-browser": "^5.3.0",
+    "file-saver": "^2.0.5",
+    "json-stringify-pretty-compact": "^3.0.0",
     "json-to-ast": "^2.1.0",
     "jsonlint": "github:josdejong/jsonlint#85a19d7",
-    "lodash": "^4.17.15",
+    "lodash": "^4.17.21",
     "lodash.capitalize": "^4.2.1",
     "lodash.clamp": "^4.0.3",
     "lodash.clonedeep": "^4.5.0",
     "lodash.get": "^4.4.2",
     "lodash.isequal": "^4.5.0",
     "lodash.throttle": "^4.1.1",
-    "mapbox-gl": "^1.9.1",
     "mapbox-gl-inspect": "^1.3.1",
-    "maputnik-design": "github:maputnik/design#f7a2b4d",
+    "maplibre-gl": "^2.4.0",
-    "ol": "^6.3.1",
+    "maputnik-design": "github:maputnik/design#172b06c",
-    "ol-mapbox-style": "^6.0.1",
+    "ol": "^6.14.1",
-    "prop-types": "^15.7.2",
+    "ol-mapbox-style": "^7.1.1",
-    "react": "^16.12.0",
+    "prop-types": "^15.8.1",
-    "react-accessible-accordion": "^3.0.1",
+    "react": "^16.0.0",
-    "react-aria-menubutton": "^6.3.0",
+    "react-accessible-accordion": "^4.0.0",
-    "react-aria-modal": "^4.0.0",
+    "react-aria-menubutton": "^7.0.3",
+    "react-aria-modal": "^4.0.1",
     "react-autobind": "^1.0.6",
     "react-autocomplete": "^1.8.1",
-    "react-collapse": "^5.0.1",
+    "react-collapse": "^5.1.1",
-    "react-color": "^2.18.0",
+    "react-color": "^2.19.3",
-    "react-dom": "^16.12.0",
+    "react-dom": "^16.0.0",
     "react-file-reader-input": "^2.0.0",
     "react-icon-base": "^2.1.2",
-    "react-icons": "^3.9.0",
+    "react-icons": "^4.3.1",
-    "react-motion": "^0.5.2",
+    "react-sortable-hoc": "^2.0.0",
-    "react-sortable-hoc": "^1.11.0",
     "reconnecting-websocket": "^4.4.0",
-    "slugify": "^1.3.6",
+    "sass": "^1.50.0",
+    "slugify": "^1.6.5",
+    "string-hash": "^1.1.3",
     "url": "^0.11.0"
   },
   "jshintConfig": {
@@ -82,83 +85,62 @@
       ]
     }
   },
-  "eslintConfig": {
-    "plugins": [
-      "react"
-    ],
-    "extends": [
-      "plugin:react/recommended"
-    ],
-    "env": {
-      "browser": true,
-      "node": true,
-      "es6": true
-    },
-    "parser": "babel-eslint",
-    "parserOptions": {
-      "ecmaVersion": 6,
-      "sourceType": "module",
-      "ecmaFeatures": {
-        "impliedStrict": true,
-        "experimentalObjectRestSpread": true,
-        "jsx": true
-      }
-    },
-    "settings": {
-      "react": {
-        "version": "detect"
-      }
-    }
-  },
   "devDependencies": {
-    "@babel/core": "^7.8.4",
+    "@cypress/code-coverage": "^3.12.15",
-    "@babel/plugin-proposal-class-properties": "^7.5.5",
+    "@istanbuljs/nyc-config-typescript": "^1.0.2",
-    "@babel/plugin-transform-runtime": "^7.6.2",
+    "@rollup/plugin-replace": "^5.0.5",
-    "@babel/preset-env": "^7.6.3",
+    "@shellygo/cypress-test-utils": "^2.0.9",
-    "@babel/preset-flow": "^7.0.0",
+    "@storybook/addon-a11y": "^7.6.5",
-    "@babel/preset-react": "^7.6.3",
+    "@storybook/addon-actions": "^7.6.5",
-    "@mdi/js": "^5.0.45",
+    "@storybook/addon-links": "^7.6.5",
-    "@wdio/cli": "^6.0.5",
+    "@storybook/addon-storysource": "^7.6.5",
-    "@wdio/local-runner": "^6.0.5",
+    "@storybook/addons": "^7.6.5",
-    "@wdio/mocha-framework": "^6.0.4",
+    "@storybook/builder-vite": "^7.6.5",
-    "@wdio/selenium-standalone-service": "^6.0.4",
+    "@storybook/react": "^7.6.5",
-    "@wdio/spec-reporter": "^6.0.4",
+    "@storybook/react-vite": "^7.6.5",
-    "@wdio/sync": "^6.0.1",
+    "@storybook/theming": "^7.6.5",
-    "babel-eslint": "^10.0.3",
+    "@types/codemirror": "^5.60.15",
-    "babel-loader": "^8.1.0",
+    "@types/color": "^3.0.6",
-    "babel-plugin-istanbul": "^6.0.0",
+    "@types/cors": "^2.8.17",
-    "babel-plugin-static-fs": "^3.0.0",
+    "@types/file-saver": "^2.0.7",
-    "copy-webpack-plugin": "^5.1.1",
+    "@types/json-to-ast": "^2.1.4",
+    "@types/lodash.capitalize": "^4.2.9",
+    "@types/lodash.clamp": "^4.0.9",
+    "@types/lodash.clonedeep": "^4.5.9",
+    "@types/lodash.get": "^4.4.9",
+    "@types/lodash.isequal": "^4.5.8",
+    "@types/lodash.throttle": "^4.1.9",
+    "@types/react": "^16.14.52",
+    "@types/react-aria-menubutton": "^6.2.13",
+    "@types/react-aria-modal": "^4.0.9",
+    "@types/react-autocomplete": "^1.8.9",
+    "@types/react-collapse": "^5.0.4",
+    "@types/react-color": "^3.0.10",
+    "@types/react-dom": "^16.9.24",
+    "@types/react-file-reader-input": "^2.0.4",
+    "@types/react-icon-base": "^2.1.6",
+    "@types/string-hash": "^1.1.3",
+    "@types/uuid": "^9.0.7",
+    "@vitejs/plugin-react": "^4.2.0",
     "cors": "^2.8.5",
-    "cross-env": "^7.0.0",
+    "cypress": "^13.6.1",
-    "css-loader": "^3.4.2",
+    "eslint": "^8.53.0",
-    "eslint": "^6.8.0",
+    "eslint-plugin-react": "^7.33.2",
-    "eslint-plugin-react": "^7.18.3",
+    "eslint-plugin-react-hooks": "^4.6.0",
-    "express": "^4.17.1",
+    "eslint-plugin-react-refresh": "^0.4.4",
-    "file-loader": "^6.0.0",
+    "express": "^4.17.3",
-    "html-webpack-inline-svg-plugin": "^1.3.0",
-    "html-webpack-plugin": "^3.2.0",
-    "is-docker": "^2.0.0",
     "istanbul": "^0.4.5",
-    "istanbul-lib-coverage": "^3.0.0",
+    "istanbul-lib-coverage": "^3.2.0",
-    "mkdirp": "^1.0.4",
+    "mocha": "^9.2.2",
-    "mocha": "^7.0.1",
+    "postcss": "^8.4.12",
-    "node-sass": "^4.13.1",
+    "react-hot-loader": "^4.13.0",
-    "react-hot-loader": "^4.12.19",
+    "storybook": "^7.6.5",
-    "sass-loader": "^8.0.2",
+    "stylelint": "^14.6.1",
-    "selenium-standalone": "^6.17.0",
+    "stylelint-config-recommended-scss": "^6.0.0",
-    "style-loader": "^1.1.3",
+    "stylelint-scss": "^4.2.0",
-    "stylelint": "^13.3.0",
+    "typescript": "^5.3.3",
-    "stylelint-config-recommended-scss": "^4.2.0",
+    "uuid": "^8.3.2",
-    "stylelint-scss": "^3.14.2",
+    "vite": "^5.0.0",
-    "svg-inline-loader": "^0.8.2",
+    "vite-plugin-istanbul": "^5.0.0"
-    "transform-loader": "^0.2.4",
-    "uuid": "^7.0.3",
-    "webdriverio": "^6.0.5",
-    "webpack": "^4.41.6",
-    "webpack-bundle-analyzer": "^3.6.0",
-    "webpack-cleanup-plugin": "^0.5.1",
-    "webpack-cli": "^3.3.11",
-    "webpack-dev-server": "^3.10.3"
   }
 }

src/components/App.tsx

@@ -1,30 +1,33 @@
+// @ts-ignore - this can be easily replaced with arrow functions
 import autoBind from 'react-autobind';
 import React from 'react'
 import cloneDeep from 'lodash.clonedeep'
 import clamp from 'lodash.clamp'
+import buffer from 'buffer'
 import get from 'lodash.get'
 import {unset} from 'lodash'
-import arrayMove from 'array-move'
+import {arrayMoveMutable} from 'array-move'
-import url from 'url'
+import hash from "string-hash";
+import {Map, LayerSpecification, StyleSpecification, ValidationError, SourceSpecification} from 'maplibre-gl'
+import {latest, validate} from '@maplibre/maplibre-gl-style-spec'
 
-import MapboxGlMap from './map/MapboxGlMap'
+import MapMaplibreGl from './MapMaplibreGl'
-import OpenLayersMap from './map/OpenLayersMap'
+import MapOpenLayers from './MapOpenLayers'
-import LayerList from './layers/LayerList'
+import LayerList from './LayerList'
-import LayerEditor from './layers/LayerEditor'
+import LayerEditor from './LayerEditor'
-import Toolbar from './Toolbar'
+import AppToolbar, { MapState } from './AppToolbar'
 import AppLayout from './AppLayout'
-import MessagePanel from './MessagePanel'
+import MessagePanel from './AppMessagePanel'
 
-import SettingsModal from './modals/SettingsModal'
+import ModalSettings from './ModalSettings'
-import ExportModal from './modals/ExportModal'
+import ModalExport from './ModalExport'
-import SourcesModal from './modals/SourcesModal'
+import ModalSources from './ModalSources'
-import OpenModal from './modals/OpenModal'
+import ModalOpen from './ModalOpen'
-import ShortcutsModal from './modals/ShortcutsModal'
+import ModalShortcuts from './ModalShortcuts'
-import SurveyModal from './modals/SurveyModal'
+import ModalSurvey from './ModalSurvey'
-import DebugModal from './modals/DebugModal'
+import ModalDebug from './ModalDebug'
 
-import { downloadGlyphsMetadata, downloadSpriteMetadata } from '../libs/metadata'
+import {downloadGlyphsMetadata, downloadSpriteMetadata} from '../libs/metadata'
-import {latest, validate} from '@mapbox/mapbox-gl-style-spec'
 import style from '../libs/style'
 import { initialStyleUrl, loadStyleUrl, removeStyleQuerystring } from '../libs/urlopen'
 import { undoMessages, redoMessages } from '../libs/diffmessage'
@@ -35,25 +38,13 @@ import LayerWatcher from '../libs/layerwatcher'
 import tokens from '../config/tokens.json'
 import isEqual from 'lodash.isequal'
 import Debug from '../libs/debug'
-import queryUtil from '../libs/query-util'
+import { SortEnd } from 'react-sortable-hoc';
-import {formatLayerId} from './util/format';
+import { MapOptions } from 'maplibre-gl';
 
-import MapboxGl from 'mapbox-gl'
+// Buffer must be defined globally for @maplibre/maplibre-gl-style-spec validate() function to succeed.
+window.Buffer = buffer.Buffer;
 
-
+function setFetchAccessToken(url: string, mapStyle: StyleSpecification) {
-// Similar functionality as <https://github.com/mapbox/mapbox-gl-js/blob/7e30aadf5177486c2cfa14fe1790c60e217b5e56/src/util/mapbox.js>
-function normalizeSourceURL (url, apiToken="") {
-  const matches = url.match(/^mapbox:\/\/(.*)/);
-  if (matches) {
-    // mapbox://mapbox.mapbox-streets-v7
-    return `https://api.mapbox.com/v4/${matches[1]}.json?secure&access_token=${apiToken}`
-  }
-  else {
-    return url;
-  }
-}
-
-function setFetchAccessToken(url, mapStyle) {
   const matchesTilehosting = url.match(/\.tilehosting\.com/);
   const matchesMaptiler = url.match(/\.maptiler\.com/);
   const matchesThunderforest = url.match(/\.thunderforest\.com/);
@@ -74,7 +65,7 @@ function setFetchAccessToken(url, mapStyle) {
   }
 }
 
-function updateRootSpec(spec, fieldName, newValues) {
+function updateRootSpec(spec: any, fieldName: string, newValues: any) {
   return {
     ...spec,
     $root: {
@@ -87,15 +78,75 @@ function updateRootSpec(spec, fieldName, newValues) {
   }
 }
 
-export default class App extends React.Component {
+type OnStyleChangedOpts = {
-  constructor(props) {
+  save?: boolean
+  addRevision?: boolean
+  initialLoad?: boolean
+}
+
+type MappedErrors = {
+  message: string
+  parsed?: {
+    type: string
+    data: {
+      index: number
+      key: string
+      message: string
+    }
+  }
+}
+
+type AppState = {
+  errors: MappedErrors[],
+  infos: string[],
+  mapStyle: StyleSpecification & {id: string},
+  dirtyMapStyle?: StyleSpecification,
+  selectedLayerIndex: number,
+  selectedLayerOriginalId?: string,
+  sources: {[key: string]: SourceSpecification},
+  vectorLayers: {},
+  spec: any,
+  mapView: {
+    zoom: number,
+    center: {
+      lng: number,
+      lat: number,
+    },
+  },
+  maplibreGlDebugOptions: Partial<MapOptions> & {
+    showTileBoundaries: boolean,
+    showCollisionBoxes: boolean,
+    showOverdrawInspector: boolean,
+  },
+  openlayersDebugOptions: {
+    debugToolbox: boolean,
+  },
+  mapState: MapState
+  isOpen: {
+    settings: boolean
+    sources: boolean
+    open: boolean
+    shortcuts: boolean
+    export: boolean
+    survey: boolean
+    debug: boolean
+  }
+}
+
+export default class App extends React.Component<any, AppState> {
+  revisionStore: RevisionStore;
+  styleStore: StyleStore | ApiStyleStore;
+  layerWatcher: LayerWatcher;
+  shortcutEl: ModalShortcuts | null = null;
+
+  constructor(props: any) {
     super(props)
     autoBind(this);
 
     this.revisionStore = new RevisionStore()
     const params = new URLSearchParams(window.location.search.substring(1))
     let port = params.get("localport")
-    if (port == null && (window.location.port != 80 && window.location.port != 443)) {
+    if (port == null && (window.location.port !== "80" && window.location.port !== "443")) {
       port = window.location.port
     }
     this.styleStore = new ApiStyleStore({
@@ -147,7 +198,7 @@ export default class App extends React.Component {
       {
         key: "m",
         handler: () => {
-          document.querySelector(".mapboxgl-canvas").focus();
+          (document.querySelector(".maplibregl-canvas") as HTMLCanvasElement).focus();
         }
       },
       {
@@ -160,7 +211,7 @@ export default class App extends React.Component {
 
     document.body.addEventListener("keyup", (e) => {
       if(e.key === "Escape") {
-        e.target.blur();
+        (e.target as HTMLElement).blur();
         document.body.focus();
       }
       else if(this.state.isOpen.shortcuts || document.activeElement === document.body) {
@@ -170,7 +221,7 @@ export default class App extends React.Component {
 
         if(shortcut) {
           this.setModal("shortcuts", false);
-          shortcut.handler(e);
+          shortcut.handler();
         }
       }
     })
@@ -189,7 +240,7 @@ export default class App extends React.Component {
           console.log('Falling back to local storage for storing styles')
           this.styleStore = new StyleStore()
         }
-        this.styleStore.latestStyle(mapStyle => this.onStyleChanged(mapStyle))
+        this.styleStore.latestStyle(mapStyle => this.onStyleChanged(mapStyle, {initialLoad: true}))
 
         if(Debug.enabled()) {
           Debug.set("maputnik", "styleStore", this.styleStore);
@@ -203,8 +254,6 @@ export default class App extends React.Component {
       Debug.set("maputnik", "styleStore", this.styleStore);
     }
 
-    const queryObj = url.parse(window.location.href, true).query;
-
     this.state = {
       errors: [],
       infos: [],
@@ -231,7 +280,7 @@ export default class App extends React.Component {
         survey: false,
         debug: false,
       },
-      mapboxGlDebugOptions: {
+      maplibreGlDebugOptions: {
         showTileBoundaries: false,
         showCollisionBoxes: false,
         showOverdrawInspector: false,
@@ -246,25 +295,25 @@ export default class App extends React.Component {
     })
   }
 
-  handleKeyPress = (e) => {
+  handleKeyPress = (e: KeyboardEvent) => {
     if(navigator.platform.toUpperCase().indexOf('MAC') >= 0) {
       if(e.metaKey && e.shiftKey && e.keyCode === 90) {
         e.preventDefault();
-        this.onRedo(e);
+        this.onRedo();
       }
       else if(e.metaKey && e.keyCode === 90) {
         e.preventDefault();
-        this.onUndo(e);
+        this.onUndo();
       }
     }
     else {
       if(e.ctrlKey && e.keyCode === 90) {
         e.preventDefault();
-        this.onUndo(e);
+        this.onUndo();
       }
       else if(e.ctrlKey && e.keyCode === 89) {
         e.preventDefault();
-        this.onRedo(e);
+        this.onRedo();
       }
     }
   }
@@ -277,12 +326,12 @@ export default class App extends React.Component {
     window.removeEventListener("keydown", this.handleKeyPress);
   }
 
-  saveStyle(snapshotStyle) {
+  saveStyle(snapshotStyle: StyleSpecification & {id: string}) {
     this.styleStore.save(snapshotStyle)
   }
 
-  updateFonts(urlTemplate) {
+  updateFonts(urlTemplate: string) {
-    const metadata = this.state.mapStyle.metadata || {}
+    const metadata: {[key: string]: string} = this.state.mapStyle.metadata || {} as any
     const accessToken = metadata['maputnik:openmaptiles_access_token'] || tokens.openmaptiles
 
     let glyphUrl = (typeof urlTemplate === 'string')? urlTemplate.replace('{key}', accessToken): urlTemplate;
@@ -291,17 +340,17 @@ export default class App extends React.Component {
     })
   }
 
-  updateIcons(baseUrl) {
+  updateIcons(baseUrl: string) {
     downloadSpriteMetadata(baseUrl, icons => {
       this.setState({ spec: updateRootSpec(this.state.spec, 'sprite', icons)})
     })
   }
 
-  onChangeMetadataProperty = (property, value) => {
+  onChangeMetadataProperty = (property: string, value: any) => {
     // If we're changing renderer reset the map state.
     if (
       property === 'maputnik:renderer' &&
-      value !== get(this.state.mapStyle, ['metadata', 'maputnik:renderer'], 'mbgljs')
+      value !== get(this.state.mapStyle, ['metadata', 'maputnik:renderer'], 'mlgljs')
     ) {
       this.setState({
         mapState: 'map'
@@ -311,30 +360,35 @@ export default class App extends React.Component {
     const changedStyle = {
       ...this.state.mapStyle,
       metadata: {
-        ...this.state.mapStyle.metadata,
+        ...(this.state.mapStyle as any).metadata,
         [property]: value
       }
     }
     this.onStyleChanged(changedStyle)
   }
 
-  onStyleChanged = (newStyle, opts={}) => {
+  onStyleChanged = (newStyle: StyleSpecification & {id: string}, opts: OnStyleChangedOpts={}) => {
     opts = {
       save: true,
       addRevision: true,
+      initialLoad: false,
       ...opts,
     };
 
-    const errors = validate(newStyle, latest) || [];
+    if (opts.initialLoad) {
+      this.getInitialStateFromUrl(newStyle);
+    }
+
+    // This "any" can be removed in latest version of maplibre where maplibre re-exported types from style-spec
+    const errors = validate(newStyle as any, latest) || [];
 
     // The validate function doesn't give us errors for duplicate error with
     // empty string for layer.id, manually deal with that here.
-    const layerErrors = [];
+    const layerErrors: (Error | ValidationError)[] = [];
     if (newStyle && newStyle.layers) {
-      const foundLayers = new Map();
+      const foundLayers = new global.Map();
       newStyle.layers.forEach((layer, index) => {
         if (layer.id === "" && foundLayers.has(layer.id)) {
-          const message = `Duplicate layer: ${formatLayerId(layer.id)}`;
           const error = new Error(
             `layers[${index}]: duplicate layer id [empty_string], previously used`
           );
@@ -348,7 +402,7 @@ export default class App extends React.Component {
       // Special case: Duplicate layer id
       const dupMatch = error.message.match(/layers\[(\d+)\]: (duplicate layer id "?(.*)"?, previously used)/);
       if (dupMatch) {
-        const [matchStr, index, message] = dupMatch;
+        const [_matchStr, index, message] = dupMatch;
         return {
           message: error.message,
           parsed: {
@@ -365,7 +419,7 @@ export default class App extends React.Component {
       // Special case: Invalid source
       const invalidSourceMatch = error.message.match(/layers\[(\d+)\]: (source "(?:.*)" not found)/);
       if (invalidSourceMatch) {
-        const [matchStr, index, message] = invalidSourceMatch;
+        const [_matchStr, index, message] = invalidSourceMatch;
         return {
           message: error.message,
           parsed: {
@@ -381,7 +435,7 @@ export default class App extends React.Component {
 
       const layerMatch = error.message.match(/layers\[(\d+)\]\.(?:(\S+)\.)?(\S+): (.*)/);
       if (layerMatch) {
-        const [matchStr, index, group, property, message] = layerMatch;
+        const [_matchStr, index, group, property, message] = layerMatch;
         const key = (group && property) ? [group, property].join(".") : property;
         return {
           message: error.message,
@@ -402,7 +456,7 @@ export default class App extends React.Component {
       }
     });
 
-    let dirtyMapStyle = undefined;
+    let dirtyMapStyle: StyleSpecification | undefined = undefined;
     if (errors.length > 0) {
       dirtyMapStyle = cloneDeep(newStyle);
 
@@ -412,7 +466,7 @@ export default class App extends React.Component {
           try {
             const objPath = message.split(":")[0];
             // Errors can be deply nested for example 'layers[0].filter[1][1][0]' we only care upto the property 'layers[0].filter'
-            const unsetPath = objPath.match(/^\S+?\[\d+\]\.[^\[]+/)[0];
+            const unsetPath = objPath.match(/^\S+?\[\d+\]\.[^\[]+/)![0];
             unset(dirtyMapStyle, unsetPath);
           }
           catch (err) {
@@ -423,26 +477,28 @@ export default class App extends React.Component {
     }
 
     if(newStyle.glyphs !== this.state.mapStyle.glyphs) {
-      this.updateFonts(newStyle.glyphs)
+      this.updateFonts(newStyle.glyphs as string)
     }
     if(newStyle.sprite !== this.state.mapStyle.sprite) {
-      this.updateIcons(newStyle.sprite)
+      this.updateIcons(newStyle.sprite as string)
     }
 
     if (opts.addRevision) {
       this.revisionStore.addRevision(newStyle);
     }
     if (opts.save) {
-      this.saveStyle(newStyle);
+      this.saveStyle(newStyle as StyleSpecification & {id: string});
     }
-       
+
     this.setState({
       mapStyle: newStyle,
       dirtyMapStyle: dirtyMapStyle,
       errors: mappedErrors,
+    }, () => {
+      this.fetchSources();
+      this.setStateInUrl();
     })
 
-    this.fetchSources();
   }
 
   onUndo = () => {
@@ -464,7 +520,7 @@ export default class App extends React.Component {
     })
   }
 
-  onMoveLayer = (move) => {
+  onMoveLayer = (move: SortEnd) => {
     let { oldIndex, newIndex } = move;
     let layers = this.state.mapStyle.layers;
     oldIndex = clamp(oldIndex, 0, layers.length-1);
@@ -478,11 +534,11 @@ export default class App extends React.Component {
     }
 
     layers = layers.slice(0);
-    layers = arrayMove(layers, oldIndex, newIndex);
+    arrayMoveMutable(layers, oldIndex, newIndex);
     this.onLayersChange(layers);
   }
 
-  onLayersChange = (changedLayers) => {
+  onLayersChange = (changedLayers: LayerSpecification[]) => {
     const changedStyle = {
       ...this.state.mapStyle,
       layers: changedLayers
@@ -490,14 +546,14 @@ export default class App extends React.Component {
     this.onStyleChanged(changedStyle)
   }
 
-  onLayerDestroy = (index) => {
+  onLayerDestroy = (index: number) => {
     let layers = this.state.mapStyle.layers;
     const remainingLayers = layers.slice(0);
     remainingLayers.splice(index, 1);
     this.onLayersChange(remainingLayers);
   }
 
-  onLayerCopy = (index) => {
+  onLayerCopy = (index: number) => {
     let layers = this.state.mapStyle.layers;
     const changedLayers = layers.slice(0)
 
@@ -507,7 +563,7 @@ export default class App extends React.Component {
     this.onLayersChange(changedLayers)
   }
 
-  onLayerVisibilityToggle = (index) => {
+  onLayerVisibilityToggle = (index: number) => {
     let layers = this.state.mapStyle.layers;
     const changedLayers = layers.slice(0)
 
@@ -521,7 +577,7 @@ export default class App extends React.Component {
   }
 
 
-  onLayerIdChange = (index, oldId, newId) => {
+  onLayerIdChange = (index: number, _oldId: string, newId: string) => {
     const changedLayers = this.state.mapStyle.layers.slice(0)
     changedLayers[index] = {
       ...changedLayers[index],
@@ -531,27 +587,27 @@ export default class App extends React.Component {
     this.onLayersChange(changedLayers)
   }
 
-  onLayerChanged = (index, layer) => {
+  onLayerChanged = (index: number, layer: LayerSpecification) => {
     const changedLayers = this.state.mapStyle.layers.slice(0)
     changedLayers[index] = layer
 
     this.onLayersChange(changedLayers)
   }
 
-  setMapState = (newState) => {
+  setMapState = (newState: MapState) => {
     this.setState({
       mapState: newState
-    })
+    }, this.setStateInUrl);
   }
 
-  setDefaultValues = (styleObj) => {
+  setDefaultValues = (styleObj: StyleSpecification & {id: string}) => {
-    const metadata = styleObj.metadata || {}
+    const metadata: {[key: string]: string} = styleObj.metadata || {} as any
     if(metadata['maputnik:renderer'] === undefined) {
       const changedStyle = {
         ...styleObj,
         metadata: {
-          ...styleObj.metadata,
+          ...styleObj.metadata as any,
-          'maputnik:renderer': 'mbgljs'
+          'maputnik:renderer': 'mlgljs'
         }
       }
       return changedStyle
@@ -560,64 +616,63 @@ export default class App extends React.Component {
     }
   }
 
-  openStyle = (styleObj) => {
+  openStyle = (styleObj: StyleSpecification & {id: string}) => {
     styleObj = this.setDefaultValues(styleObj)
     this.onStyleChanged(styleObj)
   }
 
   fetchSources() {
-    const sourceList = {...this.state.sources};
+    const sourceList: {[key: string]: any} = {};
 
     for(let [key, val] of Object.entries(this.state.mapStyle.sources)) {
-      if(sourceList.hasOwnProperty(key)) {
+      if(
-        continue;
+        !this.state.sources.hasOwnProperty(key) &&
-      }
+        val.type === "vector" &&
+        val.hasOwnProperty("url")
+      ) {
+        sourceList[key] = {
+          type: val.type,
+          layers: []
+        };
 
-      sourceList[key] = {
-        type: val.type,
-        layers: []
-      };
-
-      if(!this.state.sources.hasOwnProperty(key) && val.type === "vector" && val.hasOwnProperty("url")) {
         let url = val.url;
-        try {
-          url = normalizeSourceURL(url, MapboxGl.accessToken);
-        } catch(err) {
-          console.warn("Failed to normalizeSourceURL: ", err);
-        }
 
         try {
-          url = setFetchAccessToken(url, this.state.mapStyle)
+          url = setFetchAccessToken(url!, this.state.mapStyle)
         } catch(err) {
           console.warn("Failed to setFetchAccessToken: ", err);
         }
 
-        fetch(url, {
+        fetch(url!, {
           mode: 'cors',
         })
-          .then((response) => {
+        .then(response => response.json())
-            return response.json();
+        .then(json => {
-          })
-          .then((json) => {
-            if(!json.hasOwnProperty("vector_layers")) {
-              return;
-            }
 
-            // Create new objects before setState
+          if(!json.hasOwnProperty("vector_layers")) {
-            const sources = Object.assign({}, this.state.sources);
+            return;
+          }
 
-            for(let layer of json.vector_layers) {
+          // Create new objects before setState
-              sources[key].layers.push(layer.id)
+          const sources = Object.assign({}, {
-            }
+            [key]: this.state.sources[key],
+          });
 
-            console.debug("Updating source: "+key);
+          for(let layer of json.vector_layers) {
-            this.setState({
+            (sources[key] as any).layers.push(layer.id)
-              sources: sources
+          }
-            });
+
-          })
+          console.debug("Updating source: "+key);
-          .catch((err) => {
+          this.setState({
-            console.error("Failed to process sources for '%s'", url, err);
+            sources: sources
-          })
+          });
+        })
+        .catch(err => {
+          console.error("Failed to process sources for '%s'", url, err);
+        });
+      }
+      else {
+        sourceList[key] = this.state.sources[key] || this.state.mapStyle.sources[key];
       }
     }
 
@@ -630,11 +685,17 @@ export default class App extends React.Component {
   }
 
   _getRenderer () {
-    const metadata = this.state.mapStyle.metadata || {};
+    const metadata: {[key:string]: string} = this.state.mapStyle.metadata || {} as any;
-    return metadata['maputnik:renderer'] || 'mbgljs';
+    return metadata['maputnik:renderer'] || 'mlgljs';
   }
 
-  onMapChange = (mapView) => {
+  onMapChange = (mapView: {
+    zoom: number,
+    center: {
+      lng: number,
+      lat: number,
+    },
+  }) => {
     this.setState({
       mapView,
     });
@@ -642,16 +703,15 @@ export default class App extends React.Component {
 
   mapRenderer() {
     const {mapStyle, dirtyMapStyle} = this.state;
-    const metadata = this.state.mapStyle.metadata || {};
 
     const mapProps = {
       mapStyle: (dirtyMapStyle || mapStyle),
-      replaceAccessTokens: (mapStyle) => {
+      replaceAccessTokens: (mapStyle: StyleSpecification) => {
         return style.replaceAccessTokens(mapStyle, {
           allowFallback: true
         });
       },
-      onDataChange: (e) => {
+      onDataChange: (e: {map: Map}) => {
         this.layerWatcher.analyzeMap(e.map)
         this.fetchSources();
       },
@@ -663,16 +723,16 @@ export default class App extends React.Component {
 
     // Check if OL code has been loaded?
     if(renderer === 'ol') {
-      mapElement = <OpenLayersMap
+      mapElement = <MapOpenLayers
         {...mapProps}
         onChange={this.onMapChange}
         debugToolbox={this.state.openlayersDebugOptions.debugToolbox}
         onLayerSelect={this.onLayerSelect}
       />
     } else {
-      mapElement = <MapboxGlMap {...mapProps}
+      mapElement = <MapMaplibreGl {...mapProps}
         onChange={this.onMapChange}
-        options={this.state.mapboxGlDebugOptions}
+        options={this.state.maplibreGlDebugOptions}
         inspectModeEnabled={this.state.mapState === "inspect"}
         highlightedLayer={this.state.mapStyle.layers[this.state.selectedLayerIndex]}
         onLayerSelect={this.onLayerSelect} />
@@ -682,21 +742,104 @@ export default class App extends React.Component {
     if(this.state.mapState.match(/^filter-/)) {
       filterName = this.state.mapState.replace(/^filter-/, "");
     }
-    const elementStyle = {};
+    const elementStyle: {filter?: string} = {};
     if (filterName) {
       elementStyle.filter = `url('#${filterName}')`;
-    };
+    }
 
-    return <div style={elementStyle} className="maputnik-map__container">
+    return <div style={elementStyle} className="maputnik-map__container" data-wd-key="maplibre:container">
       {mapElement}
     </div>
   }
 
-  onLayerSelect = (index) => {
+  setStateInUrl = () => {
-    this.setState({ selectedLayerIndex: index })
+    const {mapState, mapStyle, isOpen} = this.state;
+    const {selectedLayerIndex} = this.state;
+    const url = new URL(location.href);
+    const hashVal = hash(JSON.stringify(mapStyle));
+    url.searchParams.set("layer", `${hashVal}~${selectedLayerIndex}`);
+
+    const openModals = Object.entries(isOpen)
+    .map(([key, val]) => (val === true ? key : null))
+    .filter(val => val !== null);
+
+    if (openModals.length > 0) {
+      url.searchParams.set("modal", openModals.join(","));
+    }
+    else {
+      url.searchParams.delete("modal");
+    }
+
+    if (mapState === "map") {
+      url.searchParams.delete("view");
+    }
+    else if (mapState === "inspect") {
+      url.searchParams.set("view", "inspect");
+    }
+
+    history.replaceState({selectedLayerIndex}, "Maputnik", url.href);
   }
 
-  setModal(modalName, value) {
+  getInitialStateFromUrl = (mapStyle: StyleSpecification) => {
+    const url = new URL(location.href);
+    const modalParam = url.searchParams.get("modal");
+    if (modalParam && modalParam !== "") {
+      const modals = modalParam.split(",");
+      const modalObj: {[key: string]: boolean} = {};
+      modals.forEach(modalName => {
+        modalObj[modalName] = true;
+      });
+
+      this.setState({
+        isOpen: {
+          ...this.state.isOpen,
+          ...modalObj,
+        }
+      });
+    }
+
+    const view = url.searchParams.get("view");
+    if (view && view !== "") {
+      this.setMapState(view as MapState);
+    }
+
+    const path = url.searchParams.get("layer");
+    if (path) {
+      try {
+        const parts = path.split("~");
+        const [hashVal, selectedLayerIndex] = [
+          parts[0],
+          parseInt(parts[1], 10),
+        ];
+
+        let valid = true;
+        if (hashVal !== "-") {
+          const currentHashVal = hash(JSON.stringify(mapStyle));
+          if (currentHashVal !== parseInt(hashVal, 10)) {
+            valid = false;
+          }
+        }
+        if (valid) {
+          this.setState({
+            selectedLayerIndex,
+            selectedLayerOriginalId: mapStyle.layers[selectedLayerIndex].id,
+          });
+        }
+      }
+      catch (err) {
+        console.warn(err);
+      }
+    }
+  }
+
+  onLayerSelect = (index: number) => {
+    this.setState({
+      selectedLayerIndex: index,
+      selectedLayerOriginalId: this.state.mapStyle.layers[index].id,
+    }, this.setStateInUrl);
+  }
+
+  setModal(modalName: keyof AppState["isOpen"], value: boolean) {
     if(modalName === 'survey' && value === false) {
       localStorage.setItem('survey', '');
     }
@@ -706,14 +849,14 @@ export default class App extends React.Component {
         ...this.state.isOpen,
         [modalName]: value
       }
-    })
+    }, this.setStateInUrl)
   }
 
-  toggleModal(modalName) {
+  toggleModal(modalName: keyof AppState["isOpen"]) {
     this.setModal(modalName, !this.state.isOpen[modalName]);
   }
 
-  onChangeOpenlayersDebug = (key, value) => {
+  onChangeOpenlayersDebug = (key: keyof AppState["openlayersDebugOptions"], value: boolean) => {
     this.setState({
       openlayersDebugOptions: {
         ...this.state.openlayersDebugOptions,
@@ -722,10 +865,10 @@ export default class App extends React.Component {
     });
   }
 
-  onChangeMaboxGlDebug = (key, value) => {
+  onChangeMaplibreGlDebug = (key: keyof AppState["maplibreGlDebugOptions"], value: any) => {
     this.setState({
-      mapboxGlDebugOptions: {
+      maplibreGlDebugOptions: {
-        ...this.state.mapboxGlDebugOptions,
+        ...this.state.maplibreGlDebugOptions,
         [key]: value,
       }
     });
@@ -733,10 +876,9 @@ export default class App extends React.Component {
 
   render() {
     const layers = this.state.mapStyle.layers || []
-    const selectedLayer = layers.length > 0 ? layers[this.state.selectedLayerIndex] : null
+    const selectedLayer = layers.length > 0 ? layers[this.state.selectedLayerIndex] : undefined
-    const metadata = this.state.mapStyle.metadata || {}
 
-    const toolbar = <Toolbar
+    const toolbar = <AppToolbar
       renderer={this._getRenderer()}
       mapState={this.state.mapState}
       mapStyle={this.state.mapStyle}
@@ -762,7 +904,7 @@ export default class App extends React.Component {
     />
 
     const layerEditor = selectedLayer ? <LayerEditor
-      key={selectedLayer.id}
+      key={this.state.selectedLayerOriginalId}
       layer={selectedLayer}
       layerIndex={this.state.selectedLayerIndex}
       isFirstLayer={this.state.selectedLayerIndex < 1}
@@ -777,7 +919,7 @@ export default class App extends React.Component {
       onLayerVisibilityToggle={this.onLayerVisibilityToggle}
       onLayerIdChange={this.onLayerIdChange}
       errors={this.state.errors}
-    /> : null
+    /> : undefined
 
     const bottomPanel = (this.state.errors.length + this.state.infos.length) > 0 ? <MessagePanel
       currentLayer={selectedLayer}
@@ -786,51 +928,50 @@ export default class App extends React.Component {
       mapStyle={this.state.mapStyle}
       errors={this.state.errors}
       infos={this.state.infos}
-    /> : null
+    /> : undefined
 
 
     const modals = <div>
-      <DebugModal
+      <ModalDebug
         renderer={this._getRenderer()}
-        mapboxGlDebugOptions={this.state.mapboxGlDebugOptions}
+        maplibreGlDebugOptions={this.state.maplibreGlDebugOptions}
         openlayersDebugOptions={this.state.openlayersDebugOptions}
-        onChangeMaboxGlDebug={this.onChangeMaboxGlDebug}
+        onChangeMaplibreGlDebug={this.onChangeMaplibreGlDebug}
         onChangeOpenlayersDebug={this.onChangeOpenlayersDebug}
         isOpen={this.state.isOpen.debug}
         onOpenToggle={this.toggleModal.bind(this, 'debug')}
         mapView={this.state.mapView}
       />
-      <ShortcutsModal
+      <ModalShortcuts
         ref={(el) => this.shortcutEl = el}
         isOpen={this.state.isOpen.shortcuts}
         onOpenToggle={this.toggleModal.bind(this, 'shortcuts')}
       />
-      <SettingsModal
+      <ModalSettings
         mapStyle={this.state.mapStyle}
         onStyleChanged={this.onStyleChanged}
         onChangeMetadataProperty={this.onChangeMetadataProperty}
         isOpen={this.state.isOpen.settings}
         onOpenToggle={this.toggleModal.bind(this, 'settings')}
-        openlayersDebugOptions={this.state.openlayersDebugOptions}
       />
-      <ExportModal
+      <ModalExport
         mapStyle={this.state.mapStyle}
         onStyleChanged={this.onStyleChanged}
         isOpen={this.state.isOpen.export}
         onOpenToggle={this.toggleModal.bind(this, 'export')}
       />
-      <OpenModal
+      <ModalOpen
         isOpen={this.state.isOpen.open}
         onStyleOpen={this.openStyle}
         onOpenToggle={this.toggleModal.bind(this, 'open')}
       />
-      <SourcesModal
+      <ModalSources
         mapStyle={this.state.mapStyle}
         onStyleChanged={this.onStyleChanged}
         isOpen={this.state.isOpen.sources}
         onOpenToggle={this.toggleModal.bind(this, 'sources')}
       />
-      <SurveyModal
+      <ModalSurvey
         isOpen={this.state.isOpen.survey}
         onOpenToggle={this.toggleModal.bind(this, 'survey')}
       />

src/components/AppLayout.tsx

@@ -2,16 +2,16 @@ import React from 'react'
 import PropTypes from 'prop-types'
 import ScrollContainer from './ScrollContainer'
 
-class AppLayout extends React.Component {
+type AppLayoutProps = {
-  static propTypes = {
+  toolbar: React.ReactElement
-    toolbar: PropTypes.element.isRequired,
+  layerList: React.ReactElement
-    layerList: PropTypes.element.isRequired,
+  layerEditor?: React.ReactElement
-    layerEditor: PropTypes.element,
+  map: React.ReactElement
-    map: PropTypes.element.isRequired,
+  bottom?: React.ReactElement
-    bottom: PropTypes.element,
+  modals?: React.ReactNode
-    modals: PropTypes.node,
+};
-  }
 
+class AppLayout extends React.Component<AppLayoutProps> {
   static childContextTypes = {
     reactIconBase: PropTypes.object
   }

src/components/AppMessagePanel.tsx

@@ -1,29 +1,28 @@
 import React from 'react'
-import PropTypes from 'prop-types'
+import {formatLayerId} from '../util/format';
-import {formatLayerId} from './util/format';
+import {LayerSpecification, StyleSpecification} from 'maplibre-gl';
 
-class MessagePanel extends React.Component {
+type AppMessagePanelProps = {
-  static propTypes = {
+  errors?: unknown[]
-    errors: PropTypes.array,
+  infos?: unknown[]
-    infos: PropTypes.array,
+  mapStyle?: StyleSpecification
-    mapStyle: PropTypes.object,
+  onLayerSelect?(...args: unknown[]): unknown
-    onLayerSelect: PropTypes.func,
+  currentLayer?: LayerSpecification
-    currentLayer: PropTypes.object,
+  selectedLayerIndex?: number
-    selectedLayerIndex: PropTypes.number,
+};
-  }
 
+export default class AppMessagePanel extends React.Component<AppMessagePanelProps> {
   static defaultProps = {
     onLayerSelect: () => {},
   }
 
   render() {
     const {selectedLayerIndex} = this.props;
-    const errors = this.props.errors.map((error, idx) => {
+    const errors = this.props.errors?.map((error: any, idx) => {
       let content;
       if (error.parsed && error.parsed.type === "layer") {
         const {parsed} = error;
-        const {mapStyle, currentLayer} = this.props;
+        const layerId = this.props.mapStyle?.layers[parsed.data.index].id;
-        const layerId = mapStyle.layers[parsed.data.index].id;
         content = (
           <>
             Layer <span>{formatLayerId(layerId)}</span>: {parsed.data.message}
@@ -32,7 +31,7 @@ class MessagePanel extends React.Component {
                 &nbsp;&mdash;&nbsp;
                 <button
                   className="maputnik-message-panel__switch-button"
-                  onClick={() => this.props.onLayerSelect(parsed.data.index)}
+                  onClick={() => this.props.onLayerSelect!(parsed.data.index)}
                 >
                   switch to layer
                 </button>
@@ -49,7 +48,7 @@ class MessagePanel extends React.Component {
       </p>
     })
 
-    const infos = this.props.infos.map((m, i) => {
+    const infos = this.props.infos?.map((m, i) => {
       return <p key={"info-"+i}>{m}</p>
     })
 
@@ -60,5 +59,3 @@ class MessagePanel extends React.Component {
   }
 }
 
-
-export default MessagePanel

src/components/AppToolbar.tsx

@@ -0,0 +1,285 @@
+import React from 'react'
+import classnames from 'classnames'
+import {detect} from 'detect-browser';
+
+import {MdFileDownload, MdOpenInBrowser, MdSettings, MdLayers, MdHelpOutline, MdFindInPage, MdAssignmentTurnedIn} from 'react-icons/md'
+import pkgJson from '../../package.json'
+
+
+// This is required because of <https://stackoverflow.com/a/49846426>, there isn't another way to detect support that I'm aware of.
+const browser = detect();
+const colorAccessibilityFiltersEnabled = ['chrome', 'firefox'].indexOf(browser!.name) > -1;
+
+
+type IconTextProps = {
+  children?: React.ReactNode
+};
+
+
+class IconText extends React.Component<IconTextProps> {
+  render() {
+    return <span className="maputnik-icon-text">{this.props.children}</span>
+  }
+}
+
+type ToolbarLinkProps = {
+  className?: string
+  children?: React.ReactNode
+  href?: string
+  onToggleModal?(...args: unknown[]): unknown
+};
+
+class ToolbarLink extends React.Component<ToolbarLinkProps> {
+  render() {
+    return <a
+      className={classnames('maputnik-toolbar-link', this.props.className)}
+      href={this.props.href}
+      rel="noopener noreferrer"
+      target="_blank"
+    >
+      {this.props.children}
+    </a>
+  }
+}
+
+type ToolbarLinkHighlightedProps = {
+  className?: string
+  children?: React.ReactNode
+  href?: string
+  onToggleModal?(...args: unknown[]): unknown
+};
+
+class ToolbarLinkHighlighted extends React.Component<ToolbarLinkHighlightedProps> {
+  render() {
+    return <a
+      className={classnames('maputnik-toolbar-link', "maputnik-toolbar-link--highlighted", this.props.className)}
+      href={this.props.href}
+      rel="noopener noreferrer"
+      target="_blank"
+    >
+      <span className="maputnik-toolbar-link-wrapper">
+        {this.props.children}
+      </span>
+    </a>
+  }
+}
+
+type ToolbarSelectProps = {
+  children?: React.ReactNode
+  wdKey?: string
+};
+
+class ToolbarSelect extends React.Component<ToolbarSelectProps> {
+  render() {
+    return <div
+      className='maputnik-toolbar-select'
+      data-wd-key={this.props.wdKey}
+    >
+      {this.props.children}
+    </div>
+  }
+}
+
+type ToolbarActionProps = {
+  children?: React.ReactNode
+  onClick?(...args: unknown[]): unknown
+  wdKey?: string
+};
+
+class ToolbarAction extends React.Component<ToolbarActionProps> {
+  render() {
+    return <button
+      className='maputnik-toolbar-action'
+      data-wd-key={this.props.wdKey}
+      onClick={this.props.onClick}
+    >
+      {this.props.children}
+    </button>
+  }
+}
+
+export type MapState = "map" | "inspect" | "filter-achromatopsia" | "filter-deuteranopia" | "filter-protanopia" | "filter-tritanopia";
+
+type AppToolbarProps = {
+  mapStyle: object
+  inspectModeEnabled: boolean
+  onStyleChanged(...args: unknown[]): unknown
+  // A new style has been uploaded
+  onStyleOpen(...args: unknown[]): unknown
+  // A dict of source id's and the available source layers
+  sources: object
+  children?: React.ReactNode
+  onToggleModal(...args: unknown[]): unknown
+  onSetMapState(mapState: MapState): unknown
+  mapState?: MapState
+  renderer?: string
+};
+
+export default class AppToolbar extends React.Component<AppToolbarProps> {
+  state = {
+    isOpen: {
+      settings: false,
+      sources: false,
+      open: false,
+      add: false,
+      export: false,
+    }
+  }
+
+  handleSelection(val: MapState) {
+    this.props.onSetMapState(val);
+  }
+
+  onSkip = (target: string) => {
+    if (target === "map") {
+      (document.querySelector(".maplibregl-canvas") as HTMLCanvasElement).focus();
+    }
+    else {
+      const el = document.querySelector("#skip-target-"+target) as HTMLButtonElement;
+      el.focus();
+    }
+  }
+
+  render() {
+    const views = [
+      {
+        id: "map",
+        group: "general",
+        title: "Map",
+      },
+      {
+        id: "inspect",
+        group: "general",
+        title: "Inspect",
+        disabled: this.props.renderer === 'ol',
+      },
+      {
+        id: "filter-deuteranopia",
+        group: "color-accessibility",
+        title: "Deuteranopia filter",
+        disabled: !colorAccessibilityFiltersEnabled,
+      },
+      {
+        id: "filter-protanopia",
+        group: "color-accessibility",
+        title: "Protanopia filter",
+        disabled: !colorAccessibilityFiltersEnabled,
+      },
+      {
+        id: "filter-tritanopia",
+        group: "color-accessibility",
+        title: "Tritanopia filter",
+        disabled: !colorAccessibilityFiltersEnabled,
+      },
+      {
+        id: "filter-achromatopsia",
+        group: "color-accessibility",
+        title: "Achromatopsia filter",
+        disabled: !colorAccessibilityFiltersEnabled,
+      },
+    ];
+
+    const currentView = views.find((view) => {
+      return view.id === this.props.mapState;
+    });
+
+    return <nav className='maputnik-toolbar'>
+      <div className="maputnik-toolbar__inner">
+        <div
+          className="maputnik-toolbar-logo-container"
+        >
+          {/* Keyboard accessible quick links */}
+          <button
+            data-wd-key="root:skip:layer-list"
+            className="maputnik-toolbar-skip"
+            onClick={_e => this.onSkip("layer-list")}
+          >
+            Layers list
+          </button>
+          <button
+            data-wd-key="root:skip:layer-editor"
+            className="maputnik-toolbar-skip"
+            onClick={_e => this.onSkip("layer-editor")}
+          >
+            Layer editor
+          </button>
+          <button
+            data-wd-key="root:skip:map-view"
+            className="maputnik-toolbar-skip"
+            onClick={_e => this.onSkip("map")}
+          >
+            Map view
+          </button>
+          <a
+            className="maputnik-toolbar-logo"
+            target="blank"
+            rel="noreferrer noopener"
+            href="https://github.com/maputnik/editor"
+          >
+            <img src="node_modules/maputnik-design/logos/logo-color.svg" />
+            <h1>
+              <span className="maputnik-toolbar-name">{pkgJson.name}</span>
+              <span className="maputnik-toolbar-version">v{pkgJson.version}</span>
+            </h1>
+          </a>
+        </div>
+        <div className="maputnik-toolbar__actions" role="navigation" aria-label="Toolbar">
+          <ToolbarAction wdKey="nav:open" onClick={this.props.onToggleModal.bind(this, 'open')}>
+            <MdOpenInBrowser />
+            <IconText>Open</IconText>
+          </ToolbarAction>
+          <ToolbarAction wdKey="nav:export" onClick={this.props.onToggleModal.bind(this, 'export')}>
+            <MdFileDownload />
+            <IconText>Export</IconText>
+          </ToolbarAction>
+          <ToolbarAction wdKey="nav:sources" onClick={this.props.onToggleModal.bind(this, 'sources')}>
+            <MdLayers />
+            <IconText>Data Sources</IconText>
+          </ToolbarAction>
+          <ToolbarAction wdKey="nav:settings" onClick={this.props.onToggleModal.bind(this, 'settings')}>
+            <MdSettings />
+            <IconText>Style Settings</IconText>
+          </ToolbarAction>
+
+          <ToolbarSelect wdKey="nav:inspect">
+            <MdFindInPage />
+            <label>View
+              <select
+                className="maputnik-select"
+                data-wd-key="maputnik-select"
+                onChange={(e) => this.handleSelection(e.target.value as MapState)}
+                value={currentView?.id}
+              >
+                {views.filter(v => v.group === "general").map((item) => {
+                  return (
+                    <option key={item.id} value={item.id} disabled={item.disabled} data-wd-key={item.id}>
+                      {item.title}
+                    </option>
+                  );
+                })}
+                <optgroup label="Color accessibility">
+                  {views.filter(v => v.group === "color-accessibility").map((item) => {
+                    return (
+                      <option key={item.id} value={item.id} disabled={item.disabled}>
+                        {item.title}
+                      </option>
+                    );
+                  })}
+                </optgroup>
+              </select>
+            </label>
+          </ToolbarSelect>
+
+          <ToolbarLink href={"https://github.com/maputnik/editor/wiki"}>
+            <MdHelpOutline />
+            <IconText>Help</IconText>
+          </ToolbarLink>
+          <ToolbarLinkHighlighted href={"https://gregorywolanski.typeform.com/to/cPgaSY"}>
+            <MdAssignmentTurnedIn />
+            <IconText>Take the Maputnik Survey</IconText>
+          </ToolbarLinkHighlighted>
+        </div>
+      </div>
+    </nav>
+  }
+}

src/components/Block.tsx

@@ -0,0 +1,103 @@
+import React, {SyntheticEvent} from 'react'
+import classnames from 'classnames'
+import FieldDocLabel from './FieldDocLabel'
+import Doc from './Doc'
+
+
+type BlockProps = {
+  "data-wd-key"?: string
+  label?: string
+  action?: React.ReactElement
+  style?: object
+  onChange?(...args: unknown[]): unknown
+  fieldSpec?: object
+  wideMode?: boolean
+  error?: {message: string}
+};
+
+type BlockState = {
+  showDoc: boolean
+};
+
+/** Wrap a component with a label */
+export default class Block extends React.Component<BlockProps, BlockState> {
+  _blockEl: HTMLDivElement | null = null;
+
+  constructor (props: BlockProps) {
+    super(props);
+    this.state = {
+      showDoc: false,
+    }
+  }
+
+  onChange(e: React.BaseSyntheticEvent<Event, HTMLInputElement, HTMLInputElement>) {
+    const value = e.target.value
+    if (this.props.onChange) {
+      return this.props.onChange(value === "" ? undefined : value)
+    }
+  }
+
+  onToggleDoc = (val: boolean) => {
+    this.setState({
+      showDoc: val
+    });
+  }
+
+  /**
+   * Some fields for example <InputColor/> bind click events inside the element
+   * to close the picker. This in turn propagates to the <label/> element
+   * causing the picker to reopen. This causes a scenario where the picker can
+   * never be closed once open.
+   */
+  onLabelClick = (event: SyntheticEvent<any, any>) => {
+    const el = event.nativeEvent.target;
+    const contains = this._blockEl?.contains(el);
+
+    if (event.nativeEvent.target.nodeName !== "INPUT" && !contains) {
+      event.stopPropagation();
+    }
+        event.preventDefault();
+  }
+
+  render() {
+    return <label style={this.props.style}
+      data-wd-key={this.props["data-wd-key"]}
+      className={classnames({
+        "maputnik-input-block": true,
+        "maputnik-input-block--wide": this.props.wideMode,
+        "maputnik-action-block": this.props.action
+      })}
+      onClick={this.onLabelClick}
+    >
+      {this.props.fieldSpec &&
+        <div className="maputnik-input-block-label">
+          <FieldDocLabel
+            label={this.props.label}
+            onToggleDoc={this.onToggleDoc}
+            fieldSpec={this.props.fieldSpec}
+          />
+        </div>
+      }
+      {!this.props.fieldSpec &&
+        <div className="maputnik-input-block-label">
+          {this.props.label}
+        </div>
+      }
+      <div className="maputnik-input-block-action">
+        {this.props.action}
+      </div>
+      <div className="maputnik-input-block-content" ref={el => this._blockEl = el}>
+        {this.props.children}
+      </div>
+      {this.props.fieldSpec &&
+        <div
+          className="maputnik-doc-inline"
+          style={{display: this.state.showDoc ? '' : 'none'}}
+        >
+          <Doc fieldSpec={this.props.fieldSpec} />
+        </div>
+      }
+    </label>
+  }
+}
+

src/components/Button.jsx

@@ -1,30 +0,0 @@
-import React from 'react'
-import PropTypes from 'prop-types'
-import classnames from 'classnames'
-
-class Button extends React.Component {
-  static propTypes = {
-    "data-wd-key": PropTypes.string,
-    "aria-label": PropTypes.string,
-    onClick: PropTypes.func,
-    style: PropTypes.object,
-    className: PropTypes.string,
-    children: PropTypes.node,
-    disabled: PropTypes.bool,
-  }
-
-  render() {
-    return <button
-      onClick={this.props.onClick}
-      disabled={this.props.disabled}
-      aria-label={this.props["aria-label"]}
-      className={classnames("maputnik-button", this.props.className)}
-      data-wd-key={this.props["data-wd-key"]}
-      style={this.props.style}
-    >
-      {this.props.children}
-    </button>
-  }
-}
-
-export default Button

src/components/Collapse.tsx

@@ -0,0 +1,34 @@
+import React from 'react'
+import { Collapse as ReactCollapse } from 'react-collapse'
+import {reducedMotionEnabled} from '../libs/accessibility'
+
+
+type CollapseProps = {
+  isActive: boolean
+  children: React.ReactElement
+};
+
+
+export default class Collapse extends React.Component<CollapseProps> {
+  static defaultProps = {
+    isActive: true
+  }
+
+  render() {
+    if (reducedMotionEnabled()) {
+      return (
+        <div style={{display: this.props.isActive ? "block" : "none"}}>
+          {this.props.children}
+        </div>
+      )
+    }
+    else {
+      return (
+        <ReactCollapse isOpened={this.props.isActive}>
+          {this.props.children}
+        </ReactCollapse>
+      )
+    }
+  }
+}
+

src/components/Collapser.tsx

@@ -1,13 +1,12 @@
 import React from 'react'
-import PropTypes from 'prop-types'
 import {MdArrowDropDown, MdArrowDropUp} from 'react-icons/md'
 
-export default class Collapser extends React.Component {
+type CollapserProps = {
-  static propTypes = {
+  isCollapsed: boolean
-    isCollapsed: PropTypes.bool.isRequired,
+  style?: object
-    style: PropTypes.object,
+};
-  }
 
+export default class Collapser extends React.Component<CollapserProps> {
   render() {
     const iconStyle = {
       width: 20,

src/components/Doc.tsx

@@ -1,36 +1,45 @@
 import React from 'react'
-import PropTypes from 'prop-types'
 
-export default class SpecDoc extends React.Component {
+const headers = {
-  static propTypes = {
+  js: "JS",
-    fieldSpec: PropTypes.object.isRequired,
+  android: "Android",
+  ios: "iOS",
+  macos: "macOS",
+};
+
+type DocProps = {
+  fieldSpec: {
+    doc?: string
+    values?: {
+      [key: string]: {
+        doc?: string
+      }
+    }
+    'sdk-support'?: {
+      [key: string]: typeof headers
+    }
   }
+};
 
+export default class Doc extends React.Component<DocProps> {
   render () {
     const {fieldSpec} = this.props;
 
     const {doc, values} = fieldSpec;
     const sdkSupport = fieldSpec['sdk-support'];
 
-    const headers = {
-      js: "JS",
-      android: "Android",
-      ios: "iOS",
-      macos: "macOS",
-    };
-
     const renderValues = (
       !!values &&
-      // HACK: Currently we merge additional values into the stylespec, so this is required
+      // HACK: Currently we merge additional values into the style spec, so this is required
-      // See <https://github.com/maputnik/editor/blob/master/src/components/fields/PropertyGroup.jsx#L16>
+      // See <https://github.com/maputnik/editor/blob/main/src/components/PropertyGroup.jsx#L16>
       !Array.isArray(values)
     );
 
     return (
       <>
-        {doc && 
+        {doc &&
           <div className="SpecDoc">
-            <div className="SpecDoc__doc">{doc}</div>
+            <div className="SpecDoc__doc" data-wd-key='spec-field-doc'>{doc}</div>
             {renderValues &&
               <ul className="SpecDoc__values">
                 {Object.entries(values).map(([key, value]) => {
@@ -61,10 +70,9 @@ export default class SpecDoc extends React.Component {
                   return (
                     <tr key={key}>
                       <td>{key}</td>
-                      {Object.keys(headers).map(k => {
+                      {Object.keys(headers).map((k) => {
-                        const value = supportObj[k];
                         if (supportObj.hasOwnProperty(k)) {
-                          return <td key={k}>{supportObj[k]}</td>;
+                          return <td key={k}>{supportObj[k as keyof typeof headers]}</td>;
                         }
                         else {
                           return <td key={k}>no</td>;
@@ -80,4 +88,4 @@ export default class SpecDoc extends React.Component {
       </>
     );
   }
-}
+}

src/components/FieldArray.tsx

@@ -0,0 +1,19 @@
+import React from 'react'
+import InputArray, { FieldArrayProps as InputArrayProps } from './InputArray'
+import Fieldset from './Fieldset'
+
+type FieldArrayProps = InputArrayProps & {
+  name?: string
+  fieldSpec?: {
+    doc: string
+  }
+};
+
+export default class FieldArray extends React.Component<FieldArrayProps> {
+  render() {
+    return <Fieldset label={this.props.label} fieldSpec={this.props.fieldSpec}>
+      <InputArray {...this.props} />
+    </Fieldset>
+  }
+}
+

src/components/FieldAutocomplete.tsx

@@ -0,0 +1,18 @@
+import React from 'react'
+import Block from './Block'
+import InputAutocomplete, { InputAutocompleteProps } from './InputAutocomplete'
+
+
+type FieldAutocompleteProps = InputAutocompleteProps & {
+  label?: string;
+};
+
+
+export default class FieldAutocomplete extends React.Component<FieldAutocompleteProps> {
+  render() {
+    return <Block label={this.props.label}>
+      <InputAutocomplete {...this.props} />
+    </Block>
+  }
+}
+

src/components/FieldCheckbox.tsx

@@ -0,0 +1,18 @@
+import React from 'react'
+import Block from './Block'
+import InputCheckbox, {InputCheckboxProps} from './InputCheckbox'
+
+
+type FieldCheckboxProps = InputCheckboxProps & {
+  label?: string;
+};
+
+
+export default class FieldCheckbox extends React.Component<FieldCheckboxProps> {
+  render() {
+    return <Block label={this.props.label}>
+      <InputCheckbox {...this.props} />
+    </Block>
+  }
+}
+

src/components/FieldColor.tsx

@@ -0,0 +1,21 @@
+import React from 'react'
+import Block from './Block'
+import InputColor, {InputColorProps} from './InputColor'
+
+
+type FieldColorProps = InputColorProps & {
+  label?: string
+  fieldSpec?: {
+    doc: string
+  }
+};
+
+
+export default class FieldColor extends React.Component<FieldColorProps> {
+  render() {
+    return <Block label={this.props.label} fieldSpec={this.props.fieldSpec}>
+      <InputColor {...this.props} />
+    </Block>
+  }
+}
+

src/components/FieldComment.tsx

@@ -0,0 +1,32 @@
+import React from 'react'
+
+import Block from './Block'
+import InputString from './InputString'
+
+type FieldCommentProps = {
+  value?: string
+  onChange(value: string | undefined): unknown
+  error: {message: string}
+};
+
+export default class FieldComment extends React.Component<FieldCommentProps> {
+  render() {
+    const fieldSpec = {
+      doc: "Comments for the current layer. This is non-standard and not in the spec."
+    };
+
+    return <Block
+      label={"Comments"}
+      fieldSpec={fieldSpec}
+      data-wd-key="layer-comment"
+      error={this.props.error}
+    >
+      <InputString
+        multi={true}
+        value={this.props.value}
+        onChange={this.props.onChange}
+        default="Comment..."
+      />
+    </Block>
+  }
+}

src/components/FieldDocLabel.tsx

@@ -1,26 +1,27 @@
 import React from 'react'
-import PropTypes from 'prop-types'
-
 import {MdInfoOutline, MdHighlightOff} from 'react-icons/md'
 
-export default class DocLabel extends React.Component {
+type FieldDocLabelProps = {
-  static propTypes = {
+  label: object | string | undefined
-    label: PropTypes.oneOfType([
+  fieldSpec?: {
-      PropTypes.object,
+    doc?: string
-      PropTypes.string
-    ]).isRequired,
-    fieldSpec: PropTypes.object,
-    onToggleDoc: PropTypes.func,
   }
+  onToggleDoc?(...args: unknown[]): unknown
+};
 
-  constructor (props) {
+type FieldDocLabelState = {
+  open: boolean
+};
+
+export default class FieldDocLabel extends React.Component<FieldDocLabelProps, FieldDocLabelState> {
+  constructor (props: FieldDocLabelProps) {
     super(props);
     this.state = {
       open: false,
     }
   }
 
-  onToggleDoc = (open) => {
+  onToggleDoc = (open: boolean) => {
     this.setState({
       open,
     }, () => {
@@ -43,6 +44,7 @@ export default class DocLabel extends React.Component {
             aria-label={this.state.open ? "close property documentation" : "open property documentation"}
             className={`maputnik-doc-button maputnik-doc-button--${this.state.open ? 'open' : 'closed'}`}
             onClick={() => this.onToggleDoc(!this.state.open)}
+            data-wd-key={'field-doc-button-'+label}
           >
             {this.state.open ? <MdHighlightOff /> : <MdInfoOutline />}
           </button>

src/components/FieldDynamicArray.tsx

@@ -0,0 +1,16 @@
+import React from 'react'
+import InputDynamicArray, {FieldDynamicArrayProps as InputDynamicArrayProps} from './InputDynamicArray'
+import Fieldset from './Fieldset'
+
+type FieldDynamicArrayProps = InputDynamicArrayProps & {
+  name?: string
+};
+
+export default class FieldDynamicArray extends React.Component<FieldDynamicArrayProps> {
+  render() {
+    return <Fieldset label={this.props.label}>
+      <InputDynamicArray {...this.props} />
+    </Fieldset>
+  }
+}
+

src/components/FieldEnum.tsx

@@ -0,0 +1,20 @@
+import React from 'react'
+import InputEnum, {InputEnumProps} from './InputEnum'
+import Fieldset from './Fieldset';
+
+
+type FieldEnumProps = InputEnumProps & { 
+  label?: string;
+  fieldSpec?: {
+    doc: string
+  }
+};
+
+
+export default class FieldEnum extends React.Component<FieldEnumProps> {
+  render() {
+    return <Fieldset label={this.props.label} fieldSpec={this.props.fieldSpec}>
+      <InputEnum {...this.props} />
+    </Fieldset>
+  }
+}

src/components/FieldFunction.tsx

@@ -1,19 +1,18 @@
 import React from 'react'
-import PropTypes from 'prop-types'
 
 import SpecProperty from './_SpecProperty'
-import DataProperty from './_DataProperty'
+import DataProperty, { Stop } from './_DataProperty'
 import ZoomProperty from './_ZoomProperty'
 import ExpressionProperty from './_ExpressionProperty'
-import {function as styleFunction} from '@mapbox/mapbox-gl-style-spec';
+import {function as styleFunction} from '@maplibre/maplibre-gl-style-spec';
 import {findDefaultFromSpec} from '../util/spec-helper';
 
 
-function isLiteralExpression (value) {
+function isLiteralExpression(value: any) {
   return (Array.isArray(value) && value.length === 2 && value[0] === "literal");
 }
 
-function isGetExpression (value) {
+function isGetExpression(value: any) {
   return (
     Array.isArray(value) &&
     value.length === 2 &&
@@ -21,14 +20,14 @@ function isGetExpression (value) {
   );
 }
 
-function isZoomField(value) {
+function isZoomField(value: any) {
   return (
     typeof(value) === 'object' &&
     value.stops &&
     typeof(value.property) === 'undefined' &&
     Array.isArray(value.stops) &&
     value.stops.length > 1 &&
-    value.stops.every(stop => {
+    value.stops.every((stop: Stop) => {
       return (
         Array.isArray(stop) &&
         stop.length === 2
@@ -37,7 +36,7 @@ function isZoomField(value) {
   );
 }
 
-function isIdentityProperty (value) {
+function isIdentityProperty(value: any) {
   return (
     typeof(value) === 'object' &&
     value.type === "identity" &&
@@ -45,14 +44,14 @@ function isIdentityProperty (value) {
   );
 }
 
-function isDataStopProperty (value) {
+function isDataStopProperty(value: any) {
   return (
     typeof(value) === 'object' &&
     value.stops &&
     typeof(value.property) !== 'undefined' &&
     value.stops.length > 1 &&
     Array.isArray(value.stops) &&
-    value.stops.every(stop => {
+    value.stops.every((stop: Stop) => {
       return (
         Array.isArray(stop) &&
         stop.length === 2 &&
@@ -62,26 +61,26 @@ function isDataStopProperty (value) {
   );
 }
 
-function isDataField(value) {
+function isDataField(value: any) {
   return (
     isIdentityProperty(value) ||
     isDataStopProperty(value)
   );
 }
 
-function isPrimative (value) {
+function isPrimative(value: any): value is string | boolean | number {
   const valid = ["string", "boolean", "number"];
   return valid.includes(typeof(value));
 }
 
-function isArrayOfPrimatives (values) {
+function isArrayOfPrimatives(values: any): values is Array<string | boolean | number> {
   if (Array.isArray(values)) {
     return values.every(isPrimative);
   }
   return false;
 }
 
-function getDataType (value, fieldSpec={}) {
+function getDataType(value: any, fieldSpec={} as any) {
   if (value === undefined) {
     return "value";
   }
@@ -103,35 +102,33 @@ function getDataType (value, fieldSpec={}) {
 }
 
 
+type FieldFunctionProps = {
+  onChange(fieldName: string, value: any): unknown
+  fieldName: string
+  fieldType: string
+  fieldSpec: any
+  errors?: {[key: string]: {message: string}}
+  value?: any
+};
+
+type FieldFunctionState = {
+  dataType: string
+  isEditing: boolean
+}
+
 /** Supports displaying spec field for zoom function objects
  * https://www.mapbox.com/mapbox-gl-style-spec/#types-function-zoom-property
  */
-export default class FunctionSpecProperty  extends React.Component {
+export default class FieldFunction extends React.Component<FieldFunctionProps, FieldFunctionState> {
-  static propTypes = {
+  constructor (props: FieldFunctionProps) {
-      onChange: PropTypes.func.isRequired,
+    super(props);
-      fieldName: PropTypes.string.isRequired,
-      fieldType: PropTypes.string.isRequired,
-      fieldSpec: PropTypes.object.isRequired,
-      errors: PropTypes.object,
-
-      value: PropTypes.oneOfType([
-      PropTypes.object,
-      PropTypes.string,
-      PropTypes.number,
-      PropTypes.bool,
-      PropTypes.array
-    ]),
-  }
-
-  constructor (props) {
-    super();
     this.state = {
       dataType: getDataType(props.value, props.fieldSpec),
       isEditing: false,
     }
   }
 
-  static getDerivedStateFromProps(props, state) {
+  static getDerivedStateFromProps(props: FieldFunctionProps, state: FieldFunctionState) {
     // Because otherwise when editing values we end up accidentally changing field type.
     if (state.isEditing) {
       return {};
@@ -144,7 +141,7 @@ export default class FunctionSpecProperty  extends React.Component {
     }
   }
 
-  getFieldFunctionType(fieldSpec) {
+  getFieldFunctionType(fieldSpec: any) {
     if (fieldSpec.expression.interpolated) {
       return "exponential"
     }
@@ -183,7 +180,7 @@ export default class FunctionSpecProperty  extends React.Component {
     });
   }
 
-  deleteStop = (stopIdx) => {
+  deleteStop = (stopIdx: number) => {
     const stops = this.props.value.stops.slice(0)
     stops.splice(stopIdx, 1)
 
@@ -200,12 +197,37 @@ export default class FunctionSpecProperty  extends React.Component {
   }
 
   makeZoomFunction = () => {
-    const zoomFunc = {
+    const {value} = this.props;
-      stops: [
+
-        [6, this.props.value || findDefaultFromSpec(this.props.fieldSpec)],
+    let zoomFunc;
-        [10, this.props.value || findDefaultFromSpec(this.props.fieldSpec)]
+    if (typeof(value) === "object") {
-      ]
+      if (value.stops) {
+        zoomFunc = {
+          base: value.base,
+          stops: value.stops.map((stop: Stop) => {
+            return [stop[0].zoom, stop[1] || findDefaultFromSpec(this.props.fieldSpec)];
+          })
+        }
+      }
+      else {
+        zoomFunc = {
+          base: value.base,
+          stops: [
+            [6, findDefaultFromSpec(this.props.fieldSpec)],
+            [10, findDefaultFromSpec(this.props.fieldSpec)]
+          ]
+        }
+      }
     }
+    else {
+      zoomFunc = {
+        stops: [
+          [6, value || findDefaultFromSpec(this.props.fieldSpec)],
+          [10, value || findDefaultFromSpec(this.props.fieldSpec)]
+        ]
+      }
+    }
+
     this.props.onChange(this.props.fieldName, zoomFunc)
   }
 
@@ -258,14 +280,44 @@ export default class FunctionSpecProperty  extends React.Component {
   makeDataFunction = () => {
     const functionType = this.getFieldFunctionType(this.props.fieldSpec);
     const stopValue = functionType === 'categorical' ? '' : 0;
-    const dataFunc = {
+    const {value} = this.props;
-      property: "",
+    let dataFunc;
-      type: functionType,
+
-      stops: [
+    if (typeof(value) === "object") {
-        [{zoom: 6, value: stopValue}, this.props.value || findDefaultFromSpec(this.props.fieldSpec)],
+      if (value.stops) {
-        [{zoom: 10, value: stopValue}, this.props.value || findDefaultFromSpec(this.props.fieldSpec)]
+        dataFunc = {
-      ]
+          property: "",
+          type: functionType,
+          base: value.base,
+          stops: value.stops.map((stop: Stop) => {
+            return [{zoom: stop[0], value: stopValue}, stop[1] || findDefaultFromSpec(this.props.fieldSpec)];
+          })
+        }
+      }
+      else {
+        dataFunc = {
+          property: "",
+          type: functionType,
+          base: value.base,
+          stops: [
+            [{zoom: 6, value: stopValue}, findDefaultFromSpec(this.props.fieldSpec)],
+            [{zoom: 10, value: stopValue}, findDefaultFromSpec(this.props.fieldSpec)]
+          ]
+        }
+      }
     }
+    else {
+      dataFunc = {
+        property: "",
+        type: functionType,
+        base: value.base,
+        stops: [
+          [{zoom: 6, value: stopValue}, this.props.value || findDefaultFromSpec(this.props.fieldSpec)],
+          [{zoom: 10, value: stopValue}, this.props.value || findDefaultFromSpec(this.props.fieldSpec)]
+        ]
+      }
+    }
+
     this.props.onChange(this.props.fieldName, dataFunc)
   }
 
@@ -310,11 +362,13 @@ export default class FunctionSpecProperty  extends React.Component {
           value={this.props.value}
           onDeleteStop={this.deleteStop}
           onAddStop={this.addStop}
-          onExpressionClick={this.makeExpression} 
+          onChangeToDataFunction={this.makeDataFunction}
+          onExpressionClick={this.makeExpression}
         />
       )
     }
     else if (dataType === "data_function") {
+      // TODO: Rename to FieldFunction **this file** shouldn't be called that
       specField = (
         <DataProperty
           errors={this.props.errors}
@@ -325,7 +379,8 @@ export default class FunctionSpecProperty  extends React.Component {
           value={this.props.value}
           onDeleteStop={this.deleteStop}
           onAddStop={this.addStop}
-          onExpressionClick={this.makeExpression} 
+          onChangeToZoomFunction={this.makeZoomFunction}
+          onExpressionClick={this.makeExpression}
         />
       )
     }
@@ -339,8 +394,8 @@ export default class FunctionSpecProperty  extends React.Component {
           fieldSpec={this.props.fieldSpec}
           value={this.props.value}
           onZoomClick={this.makeZoomFunction}
-          onDataClick={this.makeDataFunction} 
+          onDataClick={this.makeDataFunction}
-          onExpressionClick={this.makeExpression} 
+          onExpressionClick={this.makeExpression}
         />
       )
     }

src/components/FieldId.tsx

@@ -0,0 +1,26 @@
+import React from 'react'
+
+import {latest} from '@maplibre/maplibre-gl-style-spec'
+import Block from './Block'
+import InputString from './InputString'
+
+type FieldIdProps = {
+  value: string
+  wdKey: string
+  onChange(value: string | undefined): unknown
+  error?: {message: string}
+};
+
+export default class FieldId extends React.Component<FieldIdProps> {
+  render() {
+    return <Block label={"ID"} fieldSpec={latest.layer.id}
+      data-wd-key={this.props.wdKey}
+      error={this.props.error}
+    >
+      <InputString
+        value={this.props.value}
+        onInput={this.props.onChange}
+      />
+    </Block>
+  }
+}

src/components/FieldJson.tsx

@@ -0,0 +1,13 @@
+import React from 'react'
+import InputJson, {InputJsonProps} from './InputJson'
+
+
+type FieldJsonProps = InputJsonProps & {};
+
+
+export default class FieldJson extends React.Component<FieldJsonProps> {
+  render() {
+    return <InputJson {...this.props} />
+  }
+}
+

src/components/FieldMaxZoom.tsx

@@ -0,0 +1,29 @@
+import React from 'react'
+
+import {latest} from '@maplibre/maplibre-gl-style-spec'
+import Block from './Block'
+import InputNumber from './InputNumber'
+
+type FieldMaxZoomProps = {
+  value?: number
+  onChange(value: number | undefined): unknown
+  error?: {message: string}
+};
+
+export default class FieldMaxZoom extends React.Component<FieldMaxZoomProps> {
+  render() {
+    return <Block label={"Max Zoom"} fieldSpec={latest.layer.maxzoom}
+      error={this.props.error}
+      data-wd-key="max-zoom"
+    >
+      <InputNumber
+        allowRange={true}
+        value={this.props.value}
+        onChange={this.props.onChange}
+        min={latest.layer.maxzoom.minimum}
+        max={latest.layer.maxzoom.maximum}
+        default={latest.layer.maxzoom.maximum}
+      />
+    </Block>
+  }
+}

src/components/FieldMinZoom.tsx

@@ -0,0 +1,29 @@
+import React from 'react'
+
+import {latest} from '@maplibre/maplibre-gl-style-spec'
+import Block from './Block'
+import InputNumber from './InputNumber'
+
+type FieldMinZoomProps = {
+  value?: number
+  onChange(...args: unknown[]): unknown
+  error?: {message: string}
+};
+
+export default class FieldMinZoom extends React.Component<FieldMinZoomProps> {
+  render() {
+    return <Block label={"Min Zoom"} fieldSpec={latest.layer.minzoom}
+      error={this.props.error}
+      data-wd-key="min-zoom"
+    >
+      <InputNumber
+        allowRange={true}
+        value={this.props.value}
+        onChange={this.props.onChange}
+        min={latest.layer.minzoom.minimum}
+        max={latest.layer.minzoom.maximum}
+        default={latest.layer.minzoom.minimum}
+      />
+    </Block>
+  }
+}

src/components/FieldMultiInput.tsx

@@ -0,0 +1,18 @@
+import React from 'react'
+import InputMultiInput, {InputMultiInputProps} from './InputMultiInput'
+import Fieldset from './Fieldset'
+
+
+type FieldMultiInputProps = InputMultiInputProps & {
+  label?: string
+};
+
+
+export default class FieldMultiInput extends React.Component<FieldMultiInputProps> {
+  render() {
+    return <Fieldset label={this.props.label}>
+      <InputMultiInput {...this.props} />
+    </Fieldset>
+  }
+}
+

src/components/FieldNumber.tsx

@@ -0,0 +1,20 @@
+import React from 'react'
+import InputNumber, {InputNumberProps} from './InputNumber'
+import Block from './Block'
+
+
+type FieldNumberProps = InputNumberProps & {
+  label?: string
+  fieldSpec?: {
+    doc: string
+  }
+};
+
+
+export default class FieldNumber extends React.Component<FieldNumberProps> {
+  render() {
+    return <Block label={this.props.label} fieldSpec={this.props.fieldSpec}>
+      <InputNumber {...this.props} />
+    </Block>
+  }
+}

src/components/FieldSelect.tsx

@@ -0,0 +1,22 @@
+import React from 'react'
+import Block from './Block'
+import InputSelect, {InputSelectProps} from './InputSelect'
+
+
+type FieldSelectProps = InputSelectProps & {
+  label?: string
+  fieldSpec?: {
+    doc: string
+  }
+};
+
+
+export default class FieldSelect extends React.Component<FieldSelectProps> {
+  render() {
+    return <Block label={this.props.label} fieldSpec={this.props.fieldSpec}>
+      <InputSelect {...this.props}/>
+    </Block>
+  }
+}
+
+

src/components/FieldSource.tsx

@@ -0,0 +1,35 @@
+import React from 'react'
+
+import {latest} from '@maplibre/maplibre-gl-style-spec'
+import Block from './Block'
+import InputAutocomplete from './InputAutocomplete'
+
+type FieldSourceProps = {
+  value?: string
+  wdKey?: string
+  onChange?(value: string| undefined): unknown
+  sourceIds?: unknown[]
+  error?: {message: string}
+};
+
+export default class FieldSource extends React.Component<FieldSourceProps> {
+  static defaultProps = {
+    onChange: () => {},
+    sourceIds: [],
+  }
+
+  render() {
+    return <Block
+      label={"Source"}
+      fieldSpec={latest.layer.source}
+      error={this.props.error}
+      data-wd-key={this.props.wdKey}
+    >
+      <InputAutocomplete
+        value={this.props.value}
+        onChange={this.props.onChange}
+        options={this.props.sourceIds?.map(src => [src, src])}
+      />
+    </Block>
+  }
+}

src/components/FieldSourceLayer.tsx

@@ -0,0 +1,37 @@
+import React from 'react'
+
+import {latest} from '@maplibre/maplibre-gl-style-spec'
+import Block from './Block'
+import InputAutocomplete from './InputAutocomplete'
+
+type FieldSourceLayerProps = {
+  value?: string
+  onChange?(...args: unknown[]): unknown
+  sourceLayerIds?: unknown[]
+  isFixed?: boolean
+  error?: {message: string}
+};
+
+export default class FieldSourceLayer extends React.Component<FieldSourceLayerProps> {
+  static defaultProps = {
+    onChange: () => {},
+    sourceLayerIds: [],
+    isFixed: false
+  }
+
+  render() {
+    return <Block 
+      label={"Source Layer"} 
+      fieldSpec={latest.layer['source-layer']}
+      data-wd-key="layer-source-layer"
+      error={this.props.error}
+    >
+      <InputAutocomplete
+        keepMenuWithinWindowBounds={!!this.props.isFixed}
+        value={this.props.value}
+        onChange={this.props.onChange}
+        options={this.props.sourceLayerIds?.map(l => [l, l])}
+      />
+    </Block>
+  }
+}

src/components/FieldString.tsx

@@ -0,0 +1,19 @@
+import React from 'react'
+import Block from './Block'
+import InputString, {InputStringProps} from './InputString'
+
+type FieldStringProps = InputStringProps & {
+  name?: string
+  label?: string
+  fieldSpec?: {
+    doc: string
+  }
+};
+
+export default class FieldString extends React.Component<FieldStringProps> {
+  render() {
+    return <Block label={this.props.label} fieldSpec={this.props.fieldSpec}>
+      <InputString {...this.props} />
+    </Block>
+  }
+}

src/components/FieldType.tsx

@@ -0,0 +1,51 @@
+import React from 'react'
+
+import {latest} from '@maplibre/maplibre-gl-style-spec'
+import Block from './Block'
+import InputSelect from './InputSelect'
+import InputString from './InputString'
+
+type FieldTypeProps = {
+  value: string
+  wdKey?: string
+  onChange(value: string): unknown
+  error?: {message: string}
+  disabled?: boolean
+};
+
+export default class FieldType extends React.Component<FieldTypeProps> {
+  static defaultProps = {
+    disabled: false,
+  }
+
+  render() {
+    return <Block label={"Type"} fieldSpec={latest.layer.type}
+      data-wd-key={this.props.wdKey}
+      error={this.props.error}
+    >
+      {this.props.disabled &&
+        <InputString
+          value={this.props.value}
+          disabled={true}
+        />
+      }
+      {!this.props.disabled &&
+        <InputSelect
+          options={[
+            ['background', 'Background'],
+            ['fill', 'Fill'],
+            ['line', 'Line'],
+            ['symbol', 'Symbol'],
+            ['raster', 'Raster'],
+            ['circle', 'Circle'],
+            ['fill-extrusion', 'Fill Extrusion'],
+            ['hillshade', 'Hillshade'],
+            ['heatmap', 'Heatmap'],
+          ]}
+          onChange={this.props.onChange}
+          value={this.props.value}
+        />
+      }
+    </Block>
+  }
+}

src/components/FieldUrl.tsx

@@ -0,0 +1,23 @@
+import React from 'react'
+import InputUrl, {FieldUrlProps as InputUrlProps} from './InputUrl'
+import Block from './Block'
+
+
+type FieldUrlProps = InputUrlProps & {
+  label: string;
+  fieldSpec?: {
+    doc: string
+  }
+};
+
+
+export default class FieldUrl extends React.Component<FieldUrlProps> {
+  render () {
+    return (
+      <Block label={this.props.label} fieldSpec={this.props.fieldSpec}>
+        <InputUrl {...this.props} />
+      </Block>
+    );
+  }
+}
+

src/components/Fieldset.tsx

@@ -0,0 +1,66 @@
+import React, { ReactElement } from 'react'
+import FieldDocLabel from './FieldDocLabel'
+import Doc from './Doc'
+
+type FieldsetProps = {
+  label?: string,
+  fieldSpec?: { doc?: string },
+  action?: ReactElement,
+};
+
+type FieldsetState = {
+  showDoc: boolean
+};
+
+let IDX = 0;
+
+export default class Fieldset extends React.Component<FieldsetProps, FieldsetState> {
+  _labelId: string;
+
+  constructor (props: FieldsetProps) {
+    super(props);
+    this._labelId = `fieldset_label_${(IDX++)}`;
+    this.state = {
+      showDoc: false,
+    }
+  }
+
+  onToggleDoc = (val: boolean) => {
+    this.setState({
+      showDoc: val
+    });
+  }
+
+  render () {
+    return <div className="maputnik-input-block" role="group" aria-labelledby={this._labelId}>
+      {this.props.fieldSpec &&
+        <div className="maputnik-input-block-label">
+          <FieldDocLabel
+            label={this.props.label}
+            onToggleDoc={this.onToggleDoc}
+            fieldSpec={this.props.fieldSpec}
+          />
+        </div>
+      }
+      {!this.props.fieldSpec &&
+        <div className="maputnik-input-block-label">
+          {this.props.label}
+        </div>
+      }
+      <div className="maputnik-input-block-action">
+        {this.props.action}
+      </div>
+      <div className="maputnik-input-block-content">
+        {this.props.children}
+      </div>
+      {this.props.fieldSpec &&
+        <div
+          className="maputnik-doc-inline"
+          style={{display: this.state.showDoc ? '' : 'none'}}
+        >
+          <Doc fieldSpec={this.props.fieldSpec} />
+        </div>
+      }
+    </div>
+  }
+}

src/components/FilterEditor.tsx

@@ -1,21 +1,21 @@
 import React from 'react'
-import PropTypes from 'prop-types'
-import { combiningFilterOps } from '../../libs/filterops.js'
 import {mdiTableRowPlusAfter} from '@mdi/js';
-
+import {isEqual} from 'lodash';
-import {latest, validate, migrate} from '@mapbox/mapbox-gl-style-spec'
+import {ExpressionSpecification, LegacyFilterSpecification, StyleSpecification} from 'maplibre-gl'
-import DocLabel from '../fields/DocLabel'
+import {latest, migrate, convertFilter} from '@maplibre/maplibre-gl-style-spec'
-import SelectInput from '../inputs/SelectInput'
-import InputBlock from '../inputs/InputBlock'
-import SingleFilterEditor from './SingleFilterEditor'
-import FilterEditorBlock from './FilterEditorBlock'
-import Button from '../Button'
-import SpecDoc from '../inputs/SpecDoc'
-import ExpressionProperty from '../fields/_ExpressionProperty';
 import {mdiFunctionVariant} from '@mdi/js';
 
+import {combiningFilterOps} from '../libs/filterops'
+import InputSelect from './InputSelect'
+import Block from './Block'
+import SingleFilterEditor from './SingleFilterEditor'
+import FilterEditorBlock from './FilterEditorBlock'
+import InputButton from './InputButton'
+import Doc from './Doc'
+import ExpressionProperty from './_ExpressionProperty';
 
-function combiningFilter (props) {
+
+function combiningFilter(props: FilterEditorProps): LegacyFilterSpecification | ExpressionSpecification {
   let filter = props.filter || ['all'];
 
   if (!Array.isArray(filter)) {
@@ -30,19 +30,20 @@ function combiningFilter (props) {
     filters = [filter.slice(0)];
   }
 
-  return [combiningOp, ...filters];
+  return [combiningOp, ...filters] as LegacyFilterSpecification | ExpressionSpecification;
 }
 
-function migrateFilter (filter) {
+function migrateFilter(filter: LegacyFilterSpecification | ExpressionSpecification) {
-  return migrate(createStyleFromFilter(filter)).layers[0].filter;
+  // This "any" can be removed in latest version of maplibre where maplibre re-exported types from style-spec
+  return (migrate(createStyleFromFilter(filter) as any).layers[0] as any).filter;
 }
 
-function createStyleFromFilter (filter) {
+function createStyleFromFilter(filter: LegacyFilterSpecification | ExpressionSpecification): StyleSpecification & {id: string} {
   return {
     "id": "tmp",
     "version": 8,
     "name": "Empty Style",
-    "metadata": {"maputnik:renderer": "mbgljs"},
+    "metadata": {"maputnik:renderer": "mlgljs"},
     "sources": {
       "tmp": {
         "type": "geojson",
@@ -62,53 +63,53 @@ function createStyleFromFilter (filter) {
   };
 }
 
-/**
+const FILTER_OPS = [
- * This is doing way more work than we need it to, however validating a whole
+  "all",
- * style if the only thing that's exported from mapbox-gl-style-spec at the
+  "any",
- * moment. Not really an issue though as it take ~0.1ms to calculate.
+  "none"
- */
+];
-function checkIfSimpleFilter (filter) {
+
-  if (!filter || !combiningFilterOps.includes(filter[0])) {
+// If we convert a filter that is an expression to an expression it'll remain the same in value
-    return false;
+function checkIfSimpleFilter (filter: LegacyFilterSpecification | ExpressionSpecification) {
+  if (filter.length === 1 && FILTER_OPS.includes(filter[0])) {
+    return true;
   }
-
+  const expression = convertFilter(filter);
-  // Because "none" isn't supported by the next expression syntax we can test
+  return !isEqual(expression, filter);
-  // with ["none", ...] because it'll return false if it's a new style
-  // expression.
-  const moddedFilter = ["none", ...filter.slice(1)];
-  const tmpStyle = createStyleFromFilter(moddedFilter)
-
-  const errors = validate(tmpStyle);
-  return (errors.length < 1);
 }
 
-function hasCombiningFilter(filter) {
+function hasCombiningFilter(filter: LegacyFilterSpecification | ExpressionSpecification) {
   return combiningFilterOps.indexOf(filter[0]) >= 0
 }
 
-function hasNestedCombiningFilter(filter) {
+function hasNestedCombiningFilter(filter: LegacyFilterSpecification | ExpressionSpecification) {
   if(hasCombiningFilter(filter)) {
-    const combinedFilters = filter.slice(1)
+    return filter.slice(1).map(f => hasCombiningFilter(f as any)).filter(f => f == true).length > 0
-    return filter.slice(1).map(f => hasCombiningFilter(f)).filter(f => f == true).length > 0
   }
   return false
 }
 
-export default class CombiningFilterEditor extends React.Component {
+type FilterEditorProps = {
-  static propTypes = {
+  /** Properties of the vector layer and the available fields */
-    /** Properties of the vector layer and the available fields */
+  properties?: {[key:string]: any}
-    properties: PropTypes.object,
+  filter?: any[]
-    filter: PropTypes.array,
+  errors?: {[key:string]: any}
-    errors: PropTypes.object,
+  onChange(value: LegacyFilterSpecification | ExpressionSpecification): unknown
-    onChange: PropTypes.func.isRequired,
+};
-  }
 
+type FilterEditorState = {
+  showDoc: boolean
+  displaySimpleFilter: boolean
+  valueIsSimpleFilter?: boolean
+};
+
+export default class FilterEditor extends React.Component<FilterEditorProps, FilterEditorState> {
   static defaultProps = {
     filter: ["all"],
   }
 
-  constructor (props) {
+  constructor (props: FilterEditorProps) {
-    super();
+    super(props);
     this.state = {
       showDoc: false,
       displaySimpleFilter: checkIfSimpleFilter(combiningFilter(props)),
@@ -116,25 +117,25 @@ export default class CombiningFilterEditor extends React.Component {
   }
 
   // Convert filter to combining filter
-  onFilterPartChanged(filterIdx, newPart) {
+  onFilterPartChanged(filterIdx: number, newPart: any[]) {
-    const newFilter = combiningFilter(this.props).slice(0)
+    const newFilter = combiningFilter(this.props).slice(0) as LegacyFilterSpecification | ExpressionSpecification
     newFilter[filterIdx] = newPart
     this.props.onChange(newFilter)
   }
 
-  deleteFilterItem(filterIdx) {
+  deleteFilterItem(filterIdx: number) {
-    const newFilter = combiningFilter(this.props).slice(0)
+    const newFilter = combiningFilter(this.props).slice(0) as LegacyFilterSpecification | ExpressionSpecification
     newFilter.splice(filterIdx + 1, 1)
     this.props.onChange(newFilter)
   }
 
   addFilterItem = () => {
-    const newFilterItem = combiningFilter(this.props).slice(0)
+    const newFilterItem = combiningFilter(this.props).slice(0) as LegacyFilterSpecification | ExpressionSpecification
-    newFilterItem.push(['==', 'name', ''])
+    (newFilterItem as any[]).push(['==', 'name', ''])
     this.props.onChange(newFilterItem)
   }
 
-  onToggleDoc = (val) => {
+  onToggleDoc = (val: boolean) => {
     this.setState({
       showDoc: val
     });
@@ -154,8 +155,7 @@ export default class CombiningFilterEditor extends React.Component {
     })
   }
 
-  static getDerivedStateFromProps (props, currentState) {
+  static getDerivedStateFromProps(props: FilterEditorProps, currentState: FilterEditorState) {
-    const {filter} = props;
     const displaySimpleFilter = checkIfSimpleFilter(combiningFilter(props));
 
     // Upgrade but never downgrade
@@ -183,7 +183,7 @@ export default class CombiningFilterEditor extends React.Component {
     const fieldSpec={
       doc: latest.layer.filter.doc + " Combine multiple filters together by using a compound filter."
     };
-    const defaultFilter = ["all"];
+    const defaultFilter = ["all"] as LegacyFilterSpecification | ExpressionSpecification;
 
     const isNestedCombiningFilter = displaySimpleFilter && hasNestedCombiningFilter(combiningFilter(this.props));
 
@@ -192,36 +192,38 @@ export default class CombiningFilterEditor extends React.Component {
         <p>
           Nested filters are not supported.
         </p>
-        <Button
+        <InputButton
           onClick={this.makeExpression}
+          title="Convert to expression"
         >
           <svg style={{marginRight: "0.2em", width:"14px", height:"14px", verticalAlign: "middle"}} viewBox="0 0 24 24">
             <path fill="currentColor" d={mdiFunctionVariant} />
           </svg>
           Upgrade to expression
-        </Button>
+        </InputButton>
       </div>
     }
     else if (displaySimpleFilter) {
       const filter = combiningFilter(this.props);
       let combiningOp = filter[0];
-      let filters = filter.slice(1)
+      let filters = filter.slice(1) as (LegacyFilterSpecification | ExpressionSpecification)[];
 
       const actions = (
         <div>
-          <Button
+          <InputButton
             onClick={this.makeExpression}
+            title="Convert to expression"
             className="maputnik-make-zoom-function"
           >
             <svg style={{width:"14px", height:"14px", verticalAlign: "middle"}} viewBox="0 0 24 24">
               <path fill="currentColor" d={mdiFunctionVariant} />
             </svg>
-          </Button>
+          </InputButton>
         </div>
       );
 
       const editorBlocks = filters.map((f, idx) => {
-        const error = errors[`filter[${idx+1}]`];
+        const error = errors![`filter[${idx+1}]`];
 
         return (
           <div key={`block-${idx}`}>
@@ -242,24 +244,24 @@ export default class CombiningFilterEditor extends React.Component {
 
       return (
         <>
-          <InputBlock
+          <Block
             key="top"
             fieldSpec={fieldSpec}
             label={"Filter"}
             action={actions}
           >
-            <SelectInput
+            <InputSelect
               value={combiningOp}
-              onChange={this.onFilterPartChanged.bind(this, 0)}
+              onChange={(v: [string, any]) => this.onFilterPartChanged(0, v)}
               options={[["all", "every filter matches"], ["none", "no filter matches"], ["any", "any filter matches"]]}
             />
-          </InputBlock>
+          </Block>
           {editorBlocks}
           <div
             key="buttons"
             className="maputnik-filter-editor-add-wrapper"
           >
-            <Button
+            <InputButton
               data-wd-key="layer-filter-button"
               className="maputnik-add-filter"
               onClick={this.addFilterItem}
@@ -267,14 +269,14 @@ export default class CombiningFilterEditor extends React.Component {
               <svg style={{width:"14px", height:"14px", verticalAlign: "text-bottom"}} viewBox="0 0 24 24">
                 <path fill="currentColor" d={mdiTableRowPlusAfter} />
               </svg> Add filter
-            </Button>
+            </InputButton>
           </div>
           <div
             key="doc"
             className="maputnik-doc-inline"
             style={{display: this.state.showDoc ? '' : 'none'}}
           >
-            <SpecDoc fieldSpec={fieldSpec} />
+            <Doc fieldSpec={fieldSpec} />
           </div>
         </>
       );

src/components/FilterEditorBlock.tsx

@@ -1,23 +1,22 @@
 import React from 'react'
-import PropTypes from 'prop-types'
+import InputButton from './InputButton'
-import Button from '../Button'
 import {MdDelete} from 'react-icons/md'
 
-class FilterEditorBlock extends React.Component {
+type FilterEditorBlockProps = {
-  static propTypes = {
+  onDelete(...args: unknown[]): unknown
-    onDelete: PropTypes.func.isRequired,
+};
-    children: PropTypes.element.isRequired,
-  }
 
+export default class FilterEditorBlock extends React.Component<FilterEditorBlockProps> {
   render() {
     return <div className="maputnik-filter-editor-block">
       <div className="maputnik-filter-editor-block-action">
-        <Button
+        <InputButton
           className="maputnik-delete-filter"
           onClick={this.props.onDelete}
+          title="Delete filter block"
         >
           <MdDelete />
-        </Button>
+        </InputButton>
       </div>
       <div className="maputnik-filter-editor-block-content">
         {this.props.children}
@@ -26,4 +25,3 @@ class FilterEditorBlock extends React.Component {
   }
 }
 
-export default FilterEditorBlock

src/components/IconBackground.tsx

@@ -2,7 +2,7 @@ import React from 'react'
 import IconBase from 'react-icon-base'
 
 
-export default class BackgroundIcon extends React.Component {
+export default class IconBackground extends React.Component {
   render() {
     return (
       <IconBase viewBox="0 0 20 20" {...this.props}>

src/components/IconCircle.tsx

@@ -2,7 +2,7 @@ import React from 'react'
 import IconBase from 'react-icon-base'
 
 
-export default class FillIcon extends React.Component {
+export default class IconCircle extends React.Component {
   render() {
     return (
       <IconBase viewBox="0 0 20 20" {...this.props}>

src/components/IconFill.tsx

@@ -2,7 +2,7 @@ import React from 'react'
 import IconBase from 'react-icon-base'
 
 
-export default class FillIcon extends React.Component {
+export default class IconFill extends React.Component {
   render() {
     return (
       <IconBase viewBox="0 0 20 20" {...this.props}>

src/components/IconLayer.tsx

@@ -0,0 +1,33 @@
+import React from 'react'
+
+import IconLine from './IconLine'
+import IconFill from './IconFill'
+import IconSymbol from './IconSymbol'
+import IconBackground from './IconBackground'
+import IconCircle from './IconCircle'
+import IconMissing from './IconMissing'
+
+type IconLayerProps = {
+  type: string
+  style?: object
+  className?: string
+};
+
+export default class IconLayer extends React.Component<IconLayerProps> {
+  render() {
+    const iconProps = { style: this.props.style }
+    switch(this.props.type) {
+      case 'fill-extrusion': return <IconBackground {...iconProps} />
+      case 'raster': return <IconFill {...iconProps} />
+      case 'hillshade': return <IconFill {...iconProps} />
+      case 'heatmap': return <IconFill {...iconProps} />
+      case 'fill': return <IconFill {...iconProps} />
+      case 'background': return <IconBackground {...iconProps} />
+      case 'line': return <IconLine {...iconProps} />
+      case 'symbol': return <IconSymbol {...iconProps} />
+      case 'circle': return <IconCircle {...iconProps} />
+      default: return <IconMissing {...iconProps} />
+    }
+  }
+}
+

src/components/IconLine.tsx

@@ -2,7 +2,7 @@ import React from 'react'
 import IconBase from 'react-icon-base'
 
 
-export default class FillIcon extends React.Component {
+export default class IconLine extends React.Component {
   render() {
     return (
       <IconBase viewBox="0 0 20 20" {...this.props}>

src/components/IconMissing.tsx

@@ -2,7 +2,7 @@ import React from 'react'
 import {MdPriorityHigh} from 'react-icons/md'
 
 
-export default class MissingIcon extends React.Component {
+export default class IconMissing extends React.Component {
   render() {
     return (
       <MdPriorityHigh {...this.props} />

src/components/IconSymbol.tsx

@@ -2,7 +2,7 @@ import React from 'react'
 import IconBase from 'react-icon-base'
 
 
-export default class SymbolIcon extends React.Component {
+export default class IconSymbol extends React.Component {
   render() {
     return (
       <IconBase viewBox="0 0 20 20" {...this.props}>

src/components/InputArray.tsx

@@ -1,23 +1,29 @@
 import React from 'react'
-import PropTypes from 'prop-types'
+import InputString from './InputString'
-import StringInput from './StringInput'
+import InputNumber from './InputNumber'
-import NumberInput from './NumberInput'
 
-class ArrayInput extends React.Component {
+export type FieldArrayProps = {
-  static propTypes = {
+  value: (string | number | undefined)[]
-    value: PropTypes.array,
+  type?: string
-    type: PropTypes.string,
+  length?: number
-    length: PropTypes.number,
+  default?: (string | number | undefined)[]
-    default: PropTypes.array,
+  onChange?(value: (string | number | undefined)[] | undefined): unknown
-    onChange: PropTypes.func,
+  'aria-label'?: string
-  }
+  label?: string
+};
 
+type FieldArrayState = {
+  value: (string | number | undefined)[]
+  initialPropsValue: unknown[]
+}
+
+export default class FieldArray extends React.Component<FieldArrayProps, FieldArrayState> {
   static defaultProps = {
     value: [],
     default: [],
   }
 
-  constructor (props) {
+  constructor (props: FieldArrayProps) {
     super(props);
     this.state = {
       value: this.props.value.slice(0),
@@ -26,8 +32,8 @@ class ArrayInput extends React.Component {
     };
   }
 
-  static getDerivedStateFromProps(props, state) {
+  static getDerivedStateFromProps(props: FieldArrayProps, state: FieldArrayState) {
-    const value = [];
+    const value: any[] = [];
     const initialPropsValue = state.initialPropsValue.slice(0);
 
     Array(props.length).fill(null).map((_, i) => {
@@ -46,24 +52,24 @@ class ArrayInput extends React.Component {
     };
   }
 
-  isComplete (value) {
+  isComplete(value: unknown[]) {
     return Array(this.props.length).fill(null).every((_, i) => {
       const val = value[i]
       return !(val === undefined || val === "");
     });
   }
 
-  changeValue(idx, newValue) {
+  changeValue(idx: number, newValue: string | number | undefined) {
     const value = this.state.value.slice(0);
     value[idx] = newValue;
 
     this.setState({
       value,
     }, () => {
-      if (this.isComplete(value)) {
+      if (this.isComplete(value) && this.props.onChange) {
         this.props.onChange(value);
       }
-      else {
+      else if (this.props.onChange){
         // Unset until complete
         this.props.onChange(undefined);
       }
@@ -82,28 +88,31 @@ class ArrayInput extends React.Component {
 
     const inputs = Array(this.props.length).fill(null).map((_, i) => {
       if(this.props.type === 'number') {
-        return <NumberInput
+        return <InputNumber
           key={i}
-          default={containsValues ? undefined : this.props.default[i]}
+          default={containsValues || !this.props.default ? undefined : this.props.default[i] as number}
-          value={value[i]}
+          value={value[i] as number}
           required={containsValues ? true : false}
-          onChange={this.changeValue.bind(this, i)}
+          onChange={(v) => this.changeValue(i, v)}
+          aria-label={this.props['aria-label'] || this.props.label}
         />
       } else {
-        return <StringInput
+        return <InputString
           key={i}
-          default={containsValues ? undefined : this.props.default[i]}
+          default={containsValues || !this.props.default ? undefined : this.props.default[i] as string}
-          value={value[i]}
+          value={value[i] as string}
           required={containsValues ? true : false}
           onChange={this.changeValue.bind(this, i)}
+          aria-label={this.props['aria-label'] || this.props.label}
         />
       }
     })
 
-    return <div className="maputnik-array">
+    return (
-      {inputs}
+      <div className="maputnik-array">
-    </div>
+        {inputs}
+      </div>
+    )
   }
 }
 
-export default ArrayInput

src/components/InputAutocomplete.tsx

@@ -1,23 +1,25 @@
 import React from 'react'
-import PropTypes from 'prop-types'
 import classnames from 'classnames'
 import Autocomplete from 'react-autocomplete'
 
 
 const MAX_HEIGHT = 140;
 
-class AutocompleteInput extends React.Component {
+export type InputAutocompleteProps = {
-  static propTypes = {
+  value?: string
-    value: PropTypes.string,
+  options: any[]
-    options: PropTypes.array,
+  onChange(value: string | undefined): unknown
-    onChange: PropTypes.func,
+  keepMenuWithinWindowBounds?: boolean
-    keepMenuWithinWindowBounds: PropTypes.bool
+  'aria-label'?: string
-  }
+};
 
+export default class InputAutocomplete extends React.Component<InputAutocompleteProps> {
   state = {
     maxHeight: MAX_HEIGHT
   }
 
+  autocompleteMenuEl: HTMLDivElement | null = null;
+
   static defaultProps = {
     onChange: () => {},
     options: [],
@@ -25,7 +27,7 @@ class AutocompleteInput extends React.Component {
 
   calcMaxHeight() {
     if(this.props.keepMenuWithinWindowBounds) {
-      const maxHeight = window.innerHeight - this.autocompleteMenuEl.getBoundingClientRect().top;
+      const maxHeight = window.innerHeight - this.autocompleteMenuEl!.getBoundingClientRect().top;
       const limitedMaxHeight = Math.min(maxHeight, MAX_HEIGHT);
 
       if(limitedMaxHeight != this.state.maxHeight) {
@@ -44,7 +46,7 @@ class AutocompleteInput extends React.Component {
     this.calcMaxHeight();
   }
 
-  onChange (v) {
+  onChange(v: string) {
     this.props.onChange(v === "" ? undefined : v);
   }
 
@@ -63,9 +65,10 @@ class AutocompleteInput extends React.Component {
         }}
         wrapperProps={{
           className: "maputnik-autocomplete",
-          style: null
+          style: {}
         }}
         inputProps={{
+          'aria-label': this.props['aria-label'],
           className: "maputnik-string",
           spellCheck: false
         }}
@@ -73,11 +76,12 @@ class AutocompleteInput extends React.Component {
         items={this.props.options}
         getItemValue={(item) => item[0]}
         onSelect={v => this.onChange(v)}
-        onChange={(e, v) => this.onChange(v)}
+        onChange={(_e, v) => this.onChange(v)}
         shouldItemRender={(item, value="") => {
           if (typeof(value) === "string") {
             return item[0].toLowerCase().indexOf(value.toLowerCase()) > -1
           }
+          return false
         }}
         renderItem={(item, isHighlighted) => (
           <div
@@ -95,4 +99,4 @@ class AutocompleteInput extends React.Component {
   }
 }
 
-export default AutocompleteInput
+

src/components/InputButton.tsx

@@ -0,0 +1,33 @@
+import React from 'react'
+import classnames from 'classnames'
+
+type InputButtonProps = {
+  "data-wd-key"?: string
+  "aria-label"?: string
+  onClick?(...args: unknown[]): unknown
+  style?: object
+  className?: string
+  children?: React.ReactNode
+  disabled?: boolean
+  type?: typeof HTMLButtonElement.prototype.type
+  id?: string
+  title?: string
+};
+
+export default class InputButton extends React.Component<InputButtonProps> {
+  render() {
+    return <button
+      id={this.props.id}
+      title={this.props.title}
+      type={this.props.type}
+      onClick={this.props.onClick}
+      disabled={this.props.disabled}
+      aria-label={this.props["aria-label"]}
+      className={classnames("maputnik-button", this.props.className)}
+      data-wd-key={this.props["data-wd-key"]}
+      style={this.props.style}
+    >
+      {this.props.children}
+    </button>
+  }
+}

src/components/InputCheckbox.tsx

@@ -1,24 +1,28 @@
 import React from 'react'
-import PropTypes from 'prop-types'
 
-class CheckboxInput extends React.Component {
+export type InputCheckboxProps = {
-  static propTypes = {
+  value?: boolean
-    value: PropTypes.bool,
+  style?: object
-    style: PropTypes.object,
+  onChange(...args: unknown[]): unknown
-    onChange: PropTypes.func,
+};
-  }
 
+export default class InputCheckbox extends React.Component<InputCheckboxProps> {
   static defaultProps = {
     value: false,
   }
 
+  onChange = () => {
+    this.props.onChange(!this.props.value);
+  }
+
   render() {
-    return <label className="maputnik-checkbox-wrapper">
+    return <div className="maputnik-checkbox-wrapper">
       <input
         className="maputnik-checkbox"
         type="checkbox"
         style={this.props.style}
-        onChange={e => this.props.onChange(!this.props.value)}
+        onChange={this.onChange}
+        onClick={this.onChange}
         checked={this.props.value}
       />
       <div className="maputnik-checkbox-box">
@@ -28,8 +32,6 @@ class CheckboxInput extends React.Component {
           <path d='M1 14 L5 10 L13 18 L27 4 L31 8 L13 26 z' />
         </svg>
       </div>
-    </label>
+    </div>
   }
-}
+}
-
-export default CheckboxInput

src/components/InputColor.tsx

@@ -1,35 +1,37 @@
 import React from 'react'
 import Color from 'color'
 import ChromePicker from 'react-color/lib/components/chrome/Chrome'
-import PropTypes from 'prop-types'
+import {ColorResult} from 'react-color';
 import lodash from 'lodash';
 
-function formatColor(color) {
+function formatColor(color: ColorResult): string {
   const rgb = color.rgb
   return `rgba(${rgb.r}, ${rgb.g}, ${rgb.b}, ${rgb.a})`
 }
 
-/*** Number fields with support for min, max and units and documentation*/
+export type InputColorProps = {
-class ColorField extends React.Component {
+  onChange(...args: unknown[]): unknown
-  static propTypes = {
+  name?: string
-    onChange: PropTypes.func.isRequired,
+  value?: string
-    name: PropTypes.string,
+  doc?: string
-    value: PropTypes.string,
+  style?: object
-    doc: PropTypes.string,
+  default?: string
-    style: PropTypes.object,
+  'aria-label'?: string
-    default: PropTypes.string,
+};
-  }
 
+/*** Number fields with support for min, max and units and documentation*/
+export default class InputColor extends React.Component<InputColorProps> {
   state = {
     pickerOpened: false
   }
+  colorInput: HTMLInputElement | null = null;
 
-  constructor () {
+  constructor (props: InputColorProps) {
-    super();
+    super(props);
     this.onChangeNoCheck = lodash.throttle(this.onChangeNoCheck, 1000/30);
   }
 
-  onChangeNoCheck (v) {
+  onChangeNoCheck(v: string) {
     this.props.onChange(v);
   }
 
@@ -67,31 +69,31 @@ class ColorField extends React.Component {
     }
   }
 
-  onChange (v) {
+  onChange (v: string) {
     this.props.onChange(v === "" ? undefined : v);
   }
 
   render() {
     const offset = this.calcPickerOffset()
-    var currentColor = this.color.object()
+    const currentColor = this.color.object();
-    currentColor = {
+    const currentChromeColor = {
       r: currentColor.r,
       g: currentColor.g,
       b: currentColor.b,
       // Rename alpha -> a for ChromePicker
-      a: currentColor.alpha
+      a: currentColor.alpha!
     }
 
     const picker = <div
       className="maputnik-color-picker-offset"
       style={{
-	      position: 'fixed',
+          position: 'fixed',
-	      zIndex: 1,
+          zIndex: 1,
         left: offset.left,
         top: offset.top,
       }}>
       <ChromePicker
-        color={currentColor}
+        color={currentChromeColor}
         onChange={c => this.onChangeNoCheck(formatColor(c))}
       />
       <div
@@ -116,7 +118,9 @@ class ColorField extends React.Component {
       {this.state.pickerOpened && picker}
       <div className="maputnik-color-swatch" style={swatchStyle}></div>
       <input
+        aria-label={this.props['aria-label']}
         spellCheck="false"
+        autoComplete="off"
         className="maputnik-color"
         ref={(input) => this.colorInput = input}
         onClick={this.togglePicker}
@@ -130,4 +134,3 @@ class ColorField extends React.Component {
   }
 }
 
-export default ColorField

src/components/InputDynamicArray.tsx

@@ -0,0 +1,144 @@
+import React from 'react'
+import capitalize from 'lodash.capitalize'
+import {MdDelete} from 'react-icons/md'
+
+import InputString from './InputString'
+import InputNumber from './InputNumber'
+import InputButton from './InputButton'
+import FieldDocLabel from './FieldDocLabel'
+import InputEnum from './InputEnum'
+import InputUrl from './InputUrl'
+
+
+export type FieldDynamicArrayProps = {
+  value?: (string | number | undefined)[]
+  type?: 'url' | 'number' | 'enum' | 'string'
+  default?: (string | number | undefined)[]
+  onChange?(values: (string | number | undefined)[] | undefined): unknown
+  style?: object
+  fieldSpec?: {
+    values?: any
+  }
+  'aria-label'?: string
+  label: string
+};
+
+
+export default class FieldDynamicArray extends React.Component<FieldDynamicArrayProps> {
+  changeValue(idx: number, newValue: string | number | undefined) {
+    const values = this.values.slice(0)
+    values[idx] = newValue
+    if (this.props.onChange) this.props.onChange(values)
+  }
+
+  get values() {
+    return this.props.value || this.props.default || []
+  }
+
+  addValue = () => {
+    const values = this.values.slice(0)
+    if (this.props.type === 'number') {
+      values.push(0)
+    }
+    else if (this.props.type === 'url') {
+      values.push("");
+    }
+    else if (this.props.type === 'enum') {
+      const {fieldSpec} = this.props;
+      const defaultValue = Object.keys(fieldSpec!.values)[0];
+      values.push(defaultValue);
+    } else {
+      values.push("")
+    }
+
+    if (this.props.onChange) this.props.onChange(values)
+  }
+
+  deleteValue(valueIdx: number) {
+    const values = this.values.slice(0)
+    values.splice(valueIdx, 1)
+
+    if (this.props.onChange) this.props.onChange(values.length > 0 ? values : undefined);
+  }
+
+  render() {
+    const inputs = this.values.map((v, i) => {
+      const deleteValueBtn= <DeleteValueInputButton onClick={this.deleteValue.bind(this, i)} />
+      let input;
+      if(this.props.type === 'url') {
+        input = <InputUrl
+          value={v as string}
+          onChange={this.changeValue.bind(this, i)}
+          aria-label={this.props['aria-label'] || this.props.label}
+        />
+      }
+      else if (this.props.type === 'number') {
+        input = <InputNumber
+          value={v as number}
+          onChange={this.changeValue.bind(this, i)}
+          aria-label={this.props['aria-label'] || this.props.label}
+        />
+      }
+      else if (this.props.type === 'enum') {
+        const options = Object.keys(this.props.fieldSpec?.values).map(v => [v, capitalize(v)]);
+        input = <InputEnum
+          options={options}
+          value={v as string}
+          onChange={this.changeValue.bind(this, i)}
+          aria-label={this.props['aria-label'] || this.props.label}
+        />
+      }
+      else {
+        input = <InputString
+          value={v as string}
+          onChange={this.changeValue.bind(this, i)}
+          aria-label={this.props['aria-label'] || this.props.label}
+        />
+      }
+
+      return <div
+        style={this.props.style}
+        key={i}
+        className="maputnik-array-block"
+        >
+        <div className="maputnik-array-block-action">
+          {deleteValueBtn}
+        </div>
+        <div className="maputnik-array-block-content">
+          {input}
+        </div>
+      </div>
+    })
+
+    return (
+      <div className="maputnik-array">
+        {inputs}
+        <InputButton
+          className="maputnik-array-add-value"
+          onClick={this.addValue}
+        >
+          Add value
+        </InputButton>
+      </div>
+    );
+  }
+}
+
+type DeleteValueInputButtonProps = {
+  onClick?(...args: unknown[]): unknown
+};
+
+class DeleteValueInputButton extends React.Component<DeleteValueInputButtonProps> {
+  render() {
+    return <InputButton
+      className="maputnik-delete-stop"
+      onClick={this.props.onClick}
+      title="Remove array item"
+    >
+      <FieldDocLabel
+        label={<MdDelete />}
+      />
+    </InputButton>
+  }
+}
+

src/components/InputEnum.tsx

@@ -0,0 +1,50 @@
+import React from 'react'
+import InputSelect from './InputSelect'
+import InputMultiInput from './InputMultiInput'
+
+
+function optionsLabelLength(options: any[]) {
+  let sum = 0;
+  options.forEach(([_, label]) => {
+    sum += label.length
+  })
+  return sum
+}
+
+
+export type InputEnumProps = {
+  "data-wd-key"?: string
+  value?: string
+  style?: object
+  default?: string
+  name?: string
+  onChange(...args: unknown[]): unknown
+  options: any[]
+  'aria-label'?: string
+  label?: string
+};
+
+
+export default class InputEnum extends React.Component<InputEnumProps> {
+  render() {
+    const {options, value, onChange, name, label} = this.props;
+
+    if(options.length <= 3 && optionsLabelLength(options) <= 20) {
+      return <InputMultiInput
+        name={name}
+        options={options}
+        value={(value || this.props.default)!}
+        onChange={onChange}
+        aria-label={this.props['aria-label'] || label}
+      />
+    } else {
+      return <InputSelect
+        options={options}
+        value={(value || this.props.default)!}
+        onChange={onChange}
+        aria-label={this.props['aria-label'] || label}
+      />
+    }
+  }
+}
+

src/components/InputFont.tsx

@@ -0,0 +1,61 @@
+import React from 'react'
+import InputAutocomplete from './InputAutocomplete'
+
+export type FieldFontProps = {
+  name: string
+  value?: string[]
+  default?: string[]
+  fonts?: unknown[]
+  style?: object
+  onChange(...args: unknown[]): unknown
+  'aria-label'?: string
+};
+
+export default class FieldFont extends React.Component<FieldFontProps> {
+  static defaultProps = {
+    fonts: []
+  }
+
+  get values() {
+    const out = this.props.value || this.props.default || [];
+
+    // Always put a "" in the last field to you can keep adding entries
+    if (out[out.length-1] !== ""){
+      return out.concat("");
+    }
+    else {
+      return out;
+    }
+  }
+
+  changeFont(idx: number, newValue: string) {
+    const changedValues = this.values.slice(0)
+    changedValues[idx] = newValue
+    const filteredValues = changedValues
+      .filter(v => v !== undefined)
+      .filter(v => v !== "")
+
+    this.props.onChange(filteredValues);
+  }
+
+  render() {
+    const inputs = this.values.map((value, i) => {
+      return <li
+        key={i}
+      >
+        <InputAutocomplete
+          aria-label={this.props['aria-label'] || this.props.name}
+          value={value}
+          options={this.props.fonts?.map(f => [f, f])}
+          onChange={this.changeFont.bind(this, i)}
+        />
+      </li>
+    })
+
+    return (
+      <ul className="maputnik-font">
+        {inputs}
+      </ul>
+    );
+  }
+}

src/components/InputJson.tsx

@@ -0,0 +1,176 @@
+import React from 'react'
+import classnames from 'classnames';
+import CodeMirror, { ModeSpec } from 'codemirror';
+
+import 'codemirror/mode/javascript/javascript'
+import 'codemirror/addon/lint/lint'
+import 'codemirror/addon/edit/matchbrackets'
+import 'codemirror/lib/codemirror.css'
+import 'codemirror/addon/lint/lint.css'
+import stringifyPretty from 'json-stringify-pretty-compact'
+import '../util/codemirror-mgl';
+
+
+export type InputJsonProps = {
+  layer: any
+  maxHeight?: number
+  onChange?(...args: unknown[]): unknown
+  lineNumbers?: boolean
+  lineWrapping?: boolean
+  getValue?(data: any): string
+  gutters?: string[]
+  className?: string
+  onFocus?(...args: unknown[]): unknown
+  onBlur?(...args: unknown[]): unknown
+  onJSONValid?(...args: unknown[]): unknown
+  onJSONInvalid?(...args: unknown[]): unknown
+  mode?: ModeSpec<any>
+  lint?: boolean | object
+};
+
+type InputJsonState = {
+  isEditing: boolean
+  showMessage: boolean
+  prevValue: string
+};
+
+export default class InputJson extends React.Component<InputJsonProps, InputJsonState> {
+  static defaultProps = {
+    lineNumbers: true,
+    lineWrapping: false,
+    gutters: ["CodeMirror-lint-markers"],
+    getValue: (data: any) => {
+      return stringifyPretty(data, {indent: 2, maxLength: 40});
+    },
+    onFocus: () => {},
+    onBlur: () => {},
+    onJSONInvalid: () => {},
+    onJSONValid: () => {},
+  }
+  _keyEvent: string;
+  _doc: CodeMirror.Editor | undefined;
+  _el: HTMLDivElement | null = null;
+  _cancelNextChange: boolean = false;
+
+  constructor(props: InputJsonProps) {
+    super(props);
+    this._keyEvent = "keyboard";
+    this.state = {
+      isEditing: false,
+      showMessage: false,
+      prevValue: this.props.getValue!(this.props.layer),
+    };
+  }
+
+  componentDidMount () {
+    this._doc = CodeMirror(this._el!, {
+      value: this.props.getValue!(this.props.layer),
+      mode: this.props.mode || {
+        name: "mgl",
+      },
+      lineWrapping: this.props.lineWrapping,
+      tabSize: 2,
+      theme: 'maputnik',
+      viewportMargin: Infinity,
+      lineNumbers: this.props.lineNumbers,
+      lint: this.props.lint || {
+        context: "layer"
+      },
+      matchBrackets: true,
+      gutters: this.props.gutters,
+      scrollbarStyle: "null",
+    });
+
+    this._doc.on('change', this.onChange);
+    this._doc.on('focus', this.onFocus);
+    this._doc.on('blur', this.onBlur);
+  }
+
+  onPointerDown = () => {
+    this._keyEvent = "pointer";
+  }
+
+  onFocus = () => {
+    if (this.props.onFocus) this.props.onFocus();
+    this.setState({
+      isEditing: true,
+      showMessage: (this._keyEvent === "keyboard"),
+    });
+  }
+
+  onBlur = () => {
+    this._keyEvent = "keyboard";
+    if (this.props.onBlur) this.props.onBlur();
+    this.setState({
+      isEditing: false,
+      showMessage: false,
+    });
+  }
+
+  componentWillUnMount () {
+    this._doc!.off('change', this.onChange);
+    this._doc!.off('focus', this.onFocus);
+    this._doc!.off('blur', this.onBlur);
+  }
+
+  componentDidUpdate(prevProps: InputJsonProps) {
+    if (!this.state.isEditing && prevProps.layer !== this.props.layer) {
+      this._cancelNextChange = true;
+      this._doc!.setValue(
+        this.props.getValue!(this.props.layer),
+      )
+    }
+  }
+
+  onChange = (_e: unknown) => {
+    if (this._cancelNextChange) {
+      this._cancelNextChange = false;
+      this.setState({
+        prevValue: this._doc!.getValue(),
+      })
+      return;
+    }
+    const newCode = this._doc!.getValue();
+
+    if (this.state.prevValue !== newCode) {
+      let parsedLayer, err;
+      try {
+        parsedLayer = JSON.parse(newCode);
+      } catch(_err) {
+        err = _err;
+        console.warn(_err)
+      }
+
+      if (err && this.props.onJSONInvalid) {
+        this.props.onJSONInvalid();
+      }
+      else {
+        if (this.props.onChange) this.props.onChange(parsedLayer)
+        if (this.props.onJSONValid) this.props.onJSONValid();
+      }
+    }
+
+    this.setState({
+      prevValue: newCode,
+    });
+  }
+
+  render() {
+    const {showMessage} = this.state;
+    const style = {} as {maxHeight?: number};
+    if (this.props.maxHeight) {
+      style.maxHeight = this.props.maxHeight;
+    }
+
+    return <div className="JSONEditor" onPointerDown={this.onPointerDown} aria-hidden="true">
+      <div className={classnames("JSONEditor__message", {"JSONEditor__message--on": showMessage})}>
+        Press <kbd>ESC</kbd> to lose focus
+      </div>
+      <div
+        className={classnames("codemirror-container", this.props.className)}
+        ref={(el) => this._el = el}
+        style={style}
+      />
+    </div>
+  }
+}

src/components/InputMultiInput.tsx

@@ -0,0 +1,41 @@
+import React from 'react'
+import classnames from 'classnames'
+
+export type InputMultiInputProps = {
+  name?: string
+  value: string
+  options: any[]
+  onChange(...args: unknown[]): unknown
+  'aria-label'?: string
+};
+
+export default class InputMultiInput extends React.Component<InputMultiInputProps> {
+  render() {
+    let options = this.props.options
+    if(options.length > 0 && !Array.isArray(options[0])) {
+      options = options.map(v => [v, v])
+    }
+
+    const selectedValue = this.props.value || options[0][0]
+    const radios = options.map(([val, label])=> {
+      return <label
+        key={val}
+        className={classnames("maputnik-radio-as-button", {"maputnik-button-selected": val === selectedValue})}
+      >
+        <input type="radio"
+          name={this.props.name}
+          onChange={_e => this.props.onChange(val)}
+          value={val}
+          checked={val === selectedValue}
+        />
+        {label}
+      </label>
+    })
+
+    return <fieldset className="maputnik-multibutton" aria-label={this.props['aria-label']}>
+      {radios}
+    </fieldset>
+  }
+}
+
+

src/components/InputNumber.tsx

@@ -1,26 +1,35 @@
-import React from 'react'
+import React, { BaseSyntheticEvent } from 'react'
-import PropTypes from 'prop-types'
 
 let IDX = 0;
 
-class NumberInput extends React.Component {
+export type InputNumberProps = {
-  static propTypes = {
+  value?: number
-    value: PropTypes.number,
+  default?: number
-    default: PropTypes.number,
+  min?: number
-    min: PropTypes.number,
+  max?: number
-    max: PropTypes.number,
+  onChange?(value: number | undefined): unknown
-    onChange: PropTypes.func,
+  allowRange?: boolean
-    allowRange: PropTypes.bool,
+  rangeStep?: number
-    rangeStep: PropTypes.number,
+  wdKey?: string
-    wdKey: PropTypes.string,
+  required?: boolean
-    required: PropTypes.bool,
+  "aria-label"?: string
-  }
+};
 
+type InputNumberState = {
+  uuid: number
+  editing: boolean
+  editingRange?: boolean
+  value?: number
+  dirtyValue?: number
+}
+
+export default class InputNumber extends React.Component<InputNumberProps, InputNumberState> {
   static defaultProps = {
     rangeStep: 1
   }
+  _keyboardEvent: boolean = false;
 
-  constructor(props) {
+  constructor(props: InputNumberProps) {
     super(props)
     this.state = {
       uuid: IDX++,
@@ -30,7 +39,7 @@ class NumberInput extends React.Component {
     }
   }
 
-  static getDerivedStateFromProps(props, state) {
+  static getDerivedStateFromProps(props: InputNumberProps, state: InputNumberState) {
     if (!state.editing && props.value !== state.value) {
       return {
         value: props.value,
@@ -40,16 +49,15 @@ class NumberInput extends React.Component {
     return null;
   }
 
-  changeValue(newValue) {
+  changeValue(newValue: number | string | undefined) {
     const value = (newValue === "" || newValue === undefined) ?
-      undefined :
+      undefined : +newValue;
-      parseFloat(newValue);
 
     const hasChanged = this.props.value !== value;
     if(this.isValid(value) && hasChanged) {
-      this.props.onChange(value)
+      if (this.props.onChange) this.props.onChange(value)
       this.setState({
-        value: newValue,
+        value: value,
       });
     }
     else if (!this.isValid(value) && hasChanged) {
@@ -59,25 +67,25 @@ class NumberInput extends React.Component {
     }
 
     this.setState({
-      dirtyValue: newValue === "" ? undefined : newValue,
+      dirtyValue: newValue === "" ? undefined : value,
     })
   }
 
-  isValid(v) {
+  isValid(v: number | string | undefined) {
     if (v === undefined) {
       return true;
     }
 
-    const value = parseFloat(v)
+    const value = +v;
     if(isNaN(value)) {
       return false
     }
 
-    if(!isNaN(this.props.min) && value < this.props.min) {
+    if(!isNaN(this.props.min!) && value < this.props.min!) {
       return false
     }
 
-    if(!isNaN(this.props.max) && value > this.props.max) {
+    if(!isNaN(this.props.max!) && value > this.props.max!) {
       return false
     }
 
@@ -87,7 +95,7 @@ class NumberInput extends React.Component {
   resetValue = () => {
     this.setState({editing: false});
     // Reset explicitly to default value if value has been cleared
-    if(this.state.value === "") {
+    if(!this.state.value) {
       return;
     }
 
@@ -103,8 +111,8 @@ class NumberInput extends React.Component {
     }
   }
 
-  onChangeRange = (e) => {
+  onChangeRange = (e: BaseSyntheticEvent<Event, HTMLInputElement, HTMLInputElement>) => {
-    let value = parseFloat(e.target.value, 10);
+    let value = parseFloat(e.target.value);
     const step = this.props.rangeStep;
     let dirtyValue = value;
 
@@ -118,11 +126,11 @@ class NumberInput extends React.Component {
         // for example we might go from 13 to 13.23, however because we know
         // that came from a keyboard event we always want to increase by a
         // single step value.
-        if (value < this.state.dirtyValue) {
+        if (value < this.state.dirtyValue!) {
-          value = this.state.value - step;
+          value = this.state.value! - step;
         }
         else {
-          value = this.state.value + step
+          value = this.state.value! + step
         }
         dirtyValue = value;
       }
@@ -139,10 +147,10 @@ class NumberInput extends React.Component {
     this._keyboardEvent = false;
 
     // Clamp between min/max
-    value = Math.max(this.props.min, Math.min(this.props.max, value));
+    value = Math.max(this.props.min!, Math.min(this.props.max!, value));
 
     this.setState({value, dirtyValue});
-    this.props.onChange(value);
+    if (this.props.onChange) this.props.onChange(value);
   }
 
   render() {
@@ -171,7 +179,6 @@ class NumberInput extends React.Component {
           step="any"
           spellCheck="false"
           value={value === undefined ? defaultValue : value}
-          aria-hidden="true"
           onChange={this.onChangeRange}
           onKeyDown={() => {
             this._keyboardEvent = true;
@@ -196,15 +203,15 @@ class NumberInput extends React.Component {
           type="text"
           spellCheck="false"
           className="maputnik-number"
-          placeholder={this.props.default}
+          placeholder={this.props.default?.toString()}
           value={inputValue === undefined ? "" : inputValue}
-          onFocus={e => {
+          onFocus={_e => {
             this.setState({editing: true});
           }}
           onChange={e => {
             this.changeValue(e.target.value);
           }}
-          onBlur={e => {
+          onBlur={_e => {
             this.setState({editing: false});
             this.resetValue()
           }}
@@ -215,9 +222,10 @@ class NumberInput extends React.Component {
       const value = this.state.editing ? this.state.dirtyValue : this.state.value;
 
       return <input
+        aria-label={this.props['aria-label']}
         spellCheck="false"
         className="maputnik-number"
-        placeholder={this.props.default}
+        placeholder={this.props.default?.toString()}
         value={value === undefined ? "" : value}
         onChange={e => this.changeValue(e.target.value)}
         onFocus={() => {
@@ -230,4 +238,4 @@ class NumberInput extends React.Component {
   }
 }
 
-export default NumberInput
+

src/components/InputSelect.tsx

@@ -1,21 +1,20 @@
 import React from 'react'
-import PropTypes from 'prop-types'
-
-class SelectInput extends React.Component {
-  static propTypes = {
-    value: PropTypes.string.isRequired,
-    "data-wd-key": PropTypes.string,
-    options: PropTypes.array.isRequired,
-    style: PropTypes.object,
-    onChange: PropTypes.func.isRequired,
-    title: PropTypes.string,
-  }
 
+export type InputSelectProps = {
+  value: string
+  "data-wd-key"?: string
+  options: [string, any][] | string[]
+  style?: object
+  onChange(value: string | [string, any]): unknown
+  title?: string
+  'aria-label'?: string
+};
 
+export default class InputSelect extends React.Component<InputSelectProps> {
   render() {
-    let options = this.props.options
+    let options = this.props.options;
     if(options.length > 0 && !Array.isArray(options[0])) {
-      options = options.map(v => [v, v])
+      options = options.map((v) => [v, v]) as [string, any][];
     }
 
     return <select
@@ -25,10 +24,11 @@ class SelectInput extends React.Component {
       title={this.props.title}
       value={this.props.value}
       onChange={e => this.props.onChange(e.target.value)}
+      aria-label={this.props['aria-label']}
     >
       { options.map(([val, label]) => <option key={val} value={val}>{label}</option>) }
     </select>
   }
 }
 
-export default SelectInput
+

src/components/InputSpec.tsx

@@ -0,0 +1,126 @@
+import React, { ReactElement } from 'react'
+
+import InputColor, { InputColorProps } from './InputColor'
+import InputNumber, { InputNumberProps } from './InputNumber'
+import InputCheckbox, { InputCheckboxProps } from './InputCheckbox'
+import InputString, { InputStringProps } from './InputString'
+import InputArray, { FieldArrayProps } from './InputArray'
+import InputDynamicArray, { FieldDynamicArrayProps } from './InputDynamicArray'
+import InputFont, { FieldFontProps } from './InputFont'
+import InputAutocomplete, { InputAutocompleteProps } from './InputAutocomplete'
+import InputEnum, { InputEnumProps } from './InputEnum'
+import capitalize from 'lodash.capitalize'
+
+const iconProperties = ['background-pattern', 'fill-pattern', 'line-pattern', 'fill-extrusion-pattern', 'icon-image']
+
+export type SpecFieldProps = {
+  onChange?(fieldName: string | undefined, value: number | undefined | (string | number | undefined)[]): unknown
+  fieldName?: string
+  fieldSpec?: {
+    default?: unknown
+    type?: 'number' | 'enum' | 'resolvedImage' | 'formatted' | 'string' | 'color' | 'boolean' | 'array'
+    minimum?: number
+    maximum?: number
+    values?: unknown[]
+    length?: number
+    value?: string
+  }
+  value?: string | number | unknown[] | boolean
+  /** Override the style of the field */
+  style?: object
+  'aria-label'?: string
+  error?: unknown[]
+  label?: string
+  action?: ReactElement
+};
+
+/** Display any field from the Maplibre GL style spec and
+ * choose the correct field component based on the @{fieldSpec}
+ * to display @{value}. */
+export default class SpecField extends React.Component<SpecFieldProps> {
+
+  childNodes() {
+    const commonProps = {
+      error: this.props.error,
+      fieldSpec: this.props.fieldSpec,
+      label: this.props.label,
+      action: this.props.action,
+      style: this.props.style,
+      value: this.props.value,
+      default: this.props.fieldSpec?.default,
+      name: this.props.fieldName,
+      onChange: (newValue: number | undefined | (string | number | undefined)[]) => this.props.onChange!(this.props.fieldName, newValue),
+      'aria-label': this.props['aria-label'],
+    }
+    switch(this.props.fieldSpec?.type) {
+      case 'number': return (
+        <InputNumber
+          {...commonProps as InputNumberProps}
+          min={this.props.fieldSpec.minimum}
+          max={this.props.fieldSpec.maximum}
+        />
+      )
+      case 'enum':
+        const options = Object.keys(this.props.fieldSpec.values || []).map(v => [v, capitalize(v)])
+
+        return <InputEnum
+          {...commonProps as Omit<InputEnumProps, "options">}
+          options={options}
+        />
+      case 'resolvedImage':
+      case 'formatted':
+      case 'string':
+        if (iconProperties.indexOf(this.props.fieldName!) >= 0) {
+          const options = this.props.fieldSpec.values || [];
+          return <InputAutocomplete
+            {...commonProps as Omit<InputAutocompleteProps, "options">}
+            options={options.map(f => [f, f])}
+          />
+        } else {
+          return <InputString
+            {...commonProps as InputStringProps}
+          />
+        }
+      case 'color': return (
+        <InputColor
+          {...commonProps as InputColorProps}
+        />
+      )
+      case 'boolean': return (
+        <InputCheckbox
+          {...commonProps as InputCheckboxProps}
+        />
+      )
+      case 'array':
+        if(this.props.fieldName === 'text-font') {
+          return <InputFont
+            {...commonProps as FieldFontProps}
+            fonts={this.props.fieldSpec.values}
+          />
+        } else {
+          if (this.props.fieldSpec.length) {
+            return <InputArray
+              {...commonProps as FieldArrayProps}
+              type={this.props.fieldSpec.value}
+              length={this.props.fieldSpec.length}
+            />
+          } else {
+            return <InputDynamicArray
+              {...commonProps as FieldDynamicArrayProps}
+              fieldSpec={this.props.fieldSpec}
+              type={this.props.fieldSpec.value as FieldDynamicArrayProps['type']}
+            />
+          }
+        }
+      default: return null
+    }
+  }
+
+  render() {
+    return (
+      <div data-wd-key={"spec-field:"+this.props.fieldName}>
+        {this.childNodes()}
+      </div>
+    );
+  }
+}

src/components/InputString.tsx

@@ -1,25 +1,31 @@
 import React from 'react'
-import PropTypes from 'prop-types'
 
-class StringInput extends React.Component {
+export type InputStringProps = {
-  static propTypes = {
+  "data-wd-key"?: string
-    "data-wd-key": PropTypes.string,
+  value?: string
-    value: PropTypes.string,
+  style?: object
-    style: PropTypes.object,
+  default?: string
-    default: PropTypes.string,
+  onChange?(value: string | undefined): unknown
-    onChange: PropTypes.func,
+  onInput?(value: string | undefined): unknown
-    onInput: PropTypes.func,
+  multi?: boolean
-    multi: PropTypes.bool,
+  required?: boolean
-    required: PropTypes.bool,
+  disabled?: boolean
-    disabled: PropTypes.bool,
+  spellCheck?: boolean
-    spellCheck: PropTypes.bool,
+  'aria-label'?: string
-  }
+  title?: string
+};
 
+type InputStringState = {
+  editing: boolean
+  value?: string
+}
+
+export default class InputString extends React.Component<InputStringProps, InputStringState> {
   static defaultProps = {
     onInput: () => {},
   }
 
-  constructor(props) {
+  constructor(props: InputStringProps) {
     super(props)
     this.state = {
       editing: false,
@@ -27,7 +33,7 @@ class StringInput extends React.Component {
     }
   }
 
-  static getDerivedStateFromProps(props, state) {
+  static getDerivedStateFromProps(props: InputStringProps, state: InputStringState) {
     if (!state.editing) {
       return {
         value: props.value
@@ -59,6 +65,7 @@ class StringInput extends React.Component {
     }
 
     return React.createElement(tag, {
+      "aria-label": this.props["aria-label"],
       "data-wd-key": this.props["data-wd-key"],
       spellCheck: this.props.hasOwnProperty("spellCheck") ? this.props.spellCheck : !(tag === "input"),
       disabled: this.props.disabled,
@@ -66,22 +73,23 @@ class StringInput extends React.Component {
       style: this.props.style,
       value: this.state.value === undefined ? "" : this.state.value,
       placeholder: this.props.default,
-      onChange: e => {
+      title: this.props.title,
+      onChange: (e: React.BaseSyntheticEvent<Event, HTMLInputElement, HTMLInputElement>) => {
         this.setState({
           editing: true,
           value: e.target.value
         }, () => {
-          this.props.onInput(this.state.value);
+          if (this.props.onInput) this.props.onInput(this.state.value);
         });
       },
       onBlur: () => {
         if(this.state.value!==this.props.value) {
           this.setState({editing: false});
-          this.props.onChange(this.state.value);
+          if (this.props.onChange) this.props.onChange(this.state.value);
         }
       },
       onKeyDown: (e) => {
-        if (e.keyCode === 13) {
+        if (e.keyCode === 13 && this.props.onChange) {
           this.props.onChange(this.state.value);
         }
       },
@@ -90,4 +98,4 @@ class StringInput extends React.Component {
   }
 }
 
-export default StringInput
+

src/components/InputUrl.tsx

@@ -0,0 +1,108 @@
+import React from 'react'
+import InputString from './InputString'
+import SmallError from './SmallError'
+
+
+function validate(url: string) {
+  if (url === "") {
+    return;
+  }
+
+  let error;
+  const getProtocol = (url: string) => {
+    try {
+      const urlObj = new URL(url);
+      return urlObj.protocol;
+    }
+    catch (err) {
+      return undefined;
+    }
+  };
+  const protocol = getProtocol(url);
+  const isSsl = window.location.protocol === "https:";
+
+  if (!protocol) {
+    error = (
+      <SmallError>
+        Must provide protocol {
+          isSsl
+          ? <code>https://</code>
+          : <><code>http://</code> or <code>https://</code></>
+        }
+      </SmallError>
+    );
+  }
+  else if (
+    protocol &&
+    protocol === "http:" &&
+    window.location.protocol === "https:"
+  ) {
+    error = (
+      <SmallError>
+        CORS policy won&apos;t allow fetching resources served over http from https, use a <code>https://</code> domain
+      </SmallError>
+    );
+  }
+
+  return error;
+}
+
+export type FieldUrlProps = {
+  "data-wd-key"?: string
+  value: string
+  style?: object
+  default?: string
+  onChange(...args: unknown[]): unknown
+  onInput?(...args: unknown[]): unknown
+  multi?: boolean
+  required?: boolean
+  'aria-label'?: string
+  type?: string
+  className?: string
+};
+
+type FieldUrlState = {
+  error?: React.ReactNode
+}
+
+export default class FieldUrl extends React.Component<FieldUrlProps, FieldUrlState> {
+  static defaultProps = {
+    onInput: () => {},
+  }
+
+  constructor (props: FieldUrlProps) {
+    super(props);
+    this.state = {
+      error: validate(props.value)
+    };
+  }
+
+  onInput = (url: string) => {
+    this.setState({
+      error: validate(url)
+    });
+    if (this.props.onInput) this.props.onInput(url);
+  }
+
+  onChange = (url: string) => {
+    this.setState({
+      error: validate(url)
+    });
+    this.props.onChange(url);
+  }
+
+  render () {
+    return (
+      <div>
+        <InputString
+          {...this.props}
+          onInput={this.onInput}
+          onChange={this.onChange}
+          aria-label={this.props['aria-label']}
+        />
+        {this.state.error}
+      </div>
+    );
+  }
+}
+

src/components/LayerEditor.tsx

@@ -1,32 +1,31 @@
 import React from 'react'
 import PropTypes from 'prop-types'
 import { Wrapper, Button, Menu, MenuItem } from 'react-aria-menubutton'
-
-import JSONEditor from './JSONEditor'
-import FilterEditor from '../filter/FilterEditor'
-import PropertyGroup from '../fields/PropertyGroup'
-import LayerEditorGroup from './LayerEditorGroup'
-import LayerTypeBlock from './LayerTypeBlock'
-import LayerIdBlock from './LayerIdBlock'
-import MinZoomBlock from './MinZoomBlock'
-import MaxZoomBlock from './MaxZoomBlock'
-import CommentBlock from './CommentBlock'
-import LayerSourceBlock from './LayerSourceBlock'
-import LayerSourceLayerBlock from './LayerSourceLayerBlock'
 import {Accordion} from 'react-accessible-accordion';
-
 import {MdMoreVert} from 'react-icons/md'
+import {BackgroundLayerSpecification, LayerSpecification, SourceSpecification} from 'maplibre-gl';
 
-import { changeType, changeProperty } from '../../libs/layer'
+import FieldJson from './FieldJson'
-import layout from '../../config/layout.json'
+import FilterEditor from './FilterEditor'
+import PropertyGroup from './PropertyGroup'
+import LayerEditorGroup from './LayerEditorGroup'
+import FieldType from './FieldType'
+import FieldId from './FieldId'
+import FieldMinZoom from './FieldMinZoom'
+import FieldMaxZoom from './FieldMaxZoom'
+import FieldComment from './FieldComment'
+import FieldSource from './FieldSource'
+import FieldSourceLayer from './FieldSourceLayer'
+import { changeType, changeProperty } from '../libs/layer'
+import layout from '../config/layout.json'
 import {formatLayerId} from '../util/format';
 
 
-function getLayoutForType (type) {
+function getLayoutForType(type: LayerSpecification["type"]) {
   return layout[type] ? layout[type] : layout.invalid;
 }
 
-function layoutGroups(layerType) {
+function layoutGroups(layerType: LayerSpecification["type"]): {title: string, type: string, fields?: string[]}[] {
   const layerGroup = {
     title: 'Layer',
     type: 'layer'
@@ -44,25 +43,29 @@ function layoutGroups(layerType) {
     .concat([editorGroup])
 }
 
-/** Layer editor supporting multiple types of layers. */
+type LayerEditorProps = {
-export default class LayerEditor extends React.Component {
+  layer: LayerSpecification
-  static propTypes = {
+  sources: {[key: string]: SourceSpecification}
-    layer: PropTypes.object.isRequired,
+  vectorLayers: {[key: string]: any}
-    sources: PropTypes.object,
+  spec: object
-    vectorLayers: PropTypes.object,
+  onLayerChanged(...args: unknown[]): unknown
-    spec: PropTypes.object.isRequired,
+  onLayerIdChange(...args: unknown[]): unknown
-    onLayerChanged: PropTypes.func,
+  onMoveLayer(...args: unknown[]): unknown
-    onLayerIdChange: PropTypes.func,
+  onLayerDestroy(...args: unknown[]): unknown
-    onMoveLayer: PropTypes.func,
+  onLayerCopy(...args: unknown[]): unknown
-    onLayerDestroy: PropTypes.func,
+  onLayerVisibilityToggle(...args: unknown[]): unknown
-    onLayerCopy: PropTypes.func,
+  isFirstLayer?: boolean
-    onLayerVisibilityToggle: PropTypes.func,
+  isLastLayer?: boolean
-    isFirstLayer: PropTypes.bool,
+  layerIndex: number
-    isLastLayer: PropTypes.bool,
+  errors?: any[]
-    layerIndex: PropTypes.number,
+};
-    errors: PropTypes.array,
-  }
 
+type LayerEditorState = {
+  editorGroups: {[keys:string]: boolean}
+};
+
+/** Layer editor supporting multiple types of layers. */
+export default class LayerEditor extends React.Component<LayerEditorProps, LayerEditorState> {
   static defaultProps = {
     onLayerChanged: () => {},
     onLayerIdChange: () => {},
@@ -73,11 +76,11 @@ export default class LayerEditor extends React.Component {
     reactIconBase: PropTypes.object
   }
 
-  constructor(props) {
+  constructor(props: LayerEditorProps) {
     super(props)
 
     //TODO: Clean this up and refactor into function
-    const editorGroups = {}
+    const editorGroups: {[keys:string]: boolean} = {}
     layoutGroups(this.props.layer.type).forEach(group => {
       editorGroups[group.title] = true
     })
@@ -85,7 +88,7 @@ export default class LayerEditor extends React.Component {
     this.state = { editorGroups }
   }
 
-  static getDerivedStateFromProps(props, state) {
+  static getDerivedStateFromProps(props: LayerEditorProps, state: LayerEditorState) {
     const additionalGroups = { ...state.editorGroups }
 
     getLayoutForType(props.layer.type).groups.forEach(group => {
@@ -108,14 +111,14 @@ export default class LayerEditor extends React.Component {
     }
   }
 
-  changeProperty(group, property, newValue) {
+  changeProperty(group: keyof LayerSpecification | null, property: string, newValue: any) {
     this.props.onLayerChanged(
       this.props.layerIndex,
       changeProperty(this.props.layer, group, property, newValue)
     )
   }
 
-  onGroupToggle(groupTitle, active) {
+  onGroupToggle(groupTitle: string, active: boolean) {
     const changedActiveGroups = {
       ...this.state.editorGroups,
       [groupTitle]: active,
@@ -125,15 +128,15 @@ export default class LayerEditor extends React.Component {
     })
   }
 
-  renderGroupType(type, fields) {
+  renderGroupType(type: string, fields?: string[]): JSX.Element {
     let comment = ""
     if(this.props.layer.metadata) {
-      comment = this.props.layer.metadata['maputnik:comment']
+      comment = (this.props.layer.metadata as any)['maputnik:comment']
     }
     const {errors, layerIndex} = this.props;
 
-    const errorData = {};
+    const errorData: {[key in LayerSpecification as string]: {message: string}} = {};
-    errors.forEach(error => {
+    errors!.forEach(error => {
       if (
         error.parsed &&
         error.parsed.type === "layer" &&
@@ -146,19 +149,20 @@ export default class LayerEditor extends React.Component {
     })
 
     let sourceLayerIds;
-    if(this.props.sources.hasOwnProperty(this.props.layer.source)) {
+    const layer = this.props.layer as Exclude<LayerSpecification, BackgroundLayerSpecification>;
-      sourceLayerIds = this.props.sources[this.props.layer.source].layers;
+    if(this.props.sources.hasOwnProperty(layer.source)) {
+      sourceLayerIds = (this.props.sources[layer.source] as any).layers;
     }
 
     switch(type) {
       case 'layer': return <div>
-        <LayerIdBlock
+        <FieldId
           value={this.props.layer.id}
           wdKey="layer-editor.layer-id"
           error={errorData.id}
           onChange={newId => this.props.onLayerIdChange(this.props.layerIndex, this.props.layer.id, newId)}
         />
-        <LayerTypeBlock
+        <FieldType
           disabled={true}
           error={errorData.type}
           value={this.props.layer.type}
@@ -167,32 +171,32 @@ export default class LayerEditor extends React.Component {
             changeType(this.props.layer, newType)
           )}
         />
-        {this.props.layer.type !== 'background' && <LayerSourceBlock
+        {this.props.layer.type !== 'background' && <FieldSource
           error={errorData.source}
-          sourceIds={Object.keys(this.props.sources)}
+          sourceIds={Object.keys(this.props.sources!)}
           value={this.props.layer.source}
           onChange={v => this.changeProperty(null, 'source', v)}
         />
         }
         {['background', 'raster', 'hillshade', 'heatmap'].indexOf(this.props.layer.type) < 0 &&
-        <LayerSourceLayerBlock
+        <FieldSourceLayer
           error={errorData['source-layer']}
           sourceLayerIds={sourceLayerIds}
-          value={this.props.layer['source-layer']}
+          value={(this.props.layer as any)['source-layer']}
           onChange={v => this.changeProperty(null, 'source-layer', v)}
         />
         }
-        <MinZoomBlock
+        <FieldMinZoom
           error={errorData.minzoom}
           value={this.props.layer.minzoom}
           onChange={v => this.changeProperty(null, 'minzoom', v)}
         />
-        <MaxZoomBlock
+        <FieldMaxZoom
           error={errorData.maxzoom}
           value={this.props.layer.maxzoom}
           onChange={v => this.changeProperty(null, 'maxzoom', v)}
         />
-        <CommentBlock
+        <FieldComment
           error={errorData.comment}
           value={comment}
           onChange={v => this.changeProperty('metadata', 'maputnik:comment', v == ""  ? undefined : v)}
@@ -202,32 +206,35 @@ export default class LayerEditor extends React.Component {
         <div className="maputnik-filter-editor-wrapper">
           <FilterEditor
             errors={errorData}
-            filter={this.props.layer.filter}
+            filter={(this.props.layer as any).filter}
-            properties={this.props.vectorLayers[this.props.layer['source-layer']]}
+            properties={this.props.vectorLayers[(this.props.layer as any)['source-layer']]}
             onChange={f => this.changeProperty(null, 'filter', f)}
           />
         </div>
       </div>
-      case 'properties': return <PropertyGroup
+      case 'properties':
-        errors={errorData}
+        return <PropertyGroup
-        layer={this.props.layer}
+          errors={errorData}
-        groupFields={fields}
+          layer={this.props.layer}
-        spec={this.props.spec}
+          groupFields={fields!}
-        onChange={this.changeProperty.bind(this)}
+          spec={this.props.spec}
-      />
+          onChange={this.changeProperty.bind(this)}
-      case 'jsoneditor': return <JSONEditor
+        />
-        layer={this.props.layer}
+      case 'jsoneditor':
-        onChange={(layer) => {
+        return <FieldJson
-          this.props.onLayerChanged(
+          layer={this.props.layer}
-            this.props.layerIndex,
+          onChange={(layer) => {
-            layer
+            this.props.onLayerChanged(
-          );
+              this.props.layerIndex,
-        }}
+              layer
-      />
+            );
+          }}
+        />
+        default: return <></>
     }
   }
 
-  moveLayer(offset) {
+  moveLayer(offset: number) {
     this.props.onMoveLayer({
       oldIndex: this.props.layerIndex,
       newIndex: this.props.layerIndex+offset
@@ -235,7 +242,7 @@ export default class LayerEditor extends React.Component {
   }
 
   render() {
-    const groupIds = [];
+    const groupIds: string[] = [];
     const layerType = this.props.layer.type
     const groups = layoutGroups(layerType).filter(group => {
       return !(layerType === 'background' && group.type === 'source')
@@ -256,7 +263,7 @@ export default class LayerEditor extends React.Component {
 
     const layout = this.props.layer.layout || {}
 
-    const items = {
+    const items: {[key: string]: {text: string, handler: () => void, disabled?: boolean}} = {
       delete: {
         text: "Delete",
         handler: () => this.props.onLayerDestroy(this.props.layerIndex)
@@ -283,13 +290,15 @@ export default class LayerEditor extends React.Component {
       }
     }
 
-    function handleSelection(id, event) {
+    function handleSelection(id: string, event: React.SyntheticEvent) {
-      event.stopPropagation;
+      event.stopPropagation();
       items[id].handler();
     }
 
-    return <div className="maputnik-layer-editor"
+    return <section className="maputnik-layer-editor"
-      >
+      role="main"
+      aria-label="Layer editor"
+    >
       <header>
         <div className="layer-header">
           <h2 className="layer-header__title">
@@ -301,12 +310,12 @@ export default class LayerEditor extends React.Component {
               onSelection={handleSelection}
               closeOnSelection={false}
             >
-              <Button className='more-menu__button'>
+              <Button id="skip-target-layer-editor" data-wd-key="skip-target-layer-editor" className='more-menu__button' title="Layer options">
                 <MdMoreVert className="more-menu__button__svg" />
               </Button>
               <Menu>
                 <ul className="more-menu__menu">
-                  {Object.keys(items).map((id, idx) => {
+                  {Object.keys(items).map((id) => {
                     const item = items[id];
                     return <li key={id}>
                       <MenuItem value={id} className='more-menu__menu__item'>
@@ -328,6 +337,6 @@ export default class LayerEditor extends React.Component {
       >
         {groups}
       </Accordion>
-    </div>
+    </section>
   }
 }

src/components/LayerEditorGroup.tsx

@@ -1,5 +1,4 @@
 import React from 'react'
-import PropTypes from 'prop-types'
 import Icon from '@mdi/react'
 import {
   mdiMenuDown,
@@ -13,21 +12,22 @@ import {
 } from 'react-accessible-accordion';
 
 
-export default class LayerEditorGroup extends React.Component {
+type LayerEditorGroupProps = {
-  static propTypes = {
+  "id"?: string
-    "id": PropTypes.string,
+  "data-wd-key"?: string
-    "data-wd-key": PropTypes.string,
+  title: string
-    title: PropTypes.string.isRequired,
+  isActive: boolean
-    isActive: PropTypes.bool.isRequired,
+  children: React.ReactElement
-    children: PropTypes.element.isRequired,
+  onActiveToggle(active: boolean): unknown
-    onActiveToggle: PropTypes.func.isRequired
+};
-  }
 
+
+export default class LayerEditorGroup extends React.Component<LayerEditorGroupProps> {
   render() {
     return <AccordionItem uuid={this.props.id}>
       <AccordionItemHeading className="maputnik-layer-editor-group"
         data-wd-key={"layer-editor-group:"+this.props["data-wd-key"]}
-        onClick={e => this.props.onActiveToggle(!this.props.isActive)}
+        onClick={_e => this.props.onActiveToggle(!this.props.isActive)}
       >
         <AccordionItemButton className="maputnik-layer-editor-group__button">
           <span style={{flexGrow: 1}}>{this.props.title}</span>

src/components/LayerList.tsx

@@ -1,27 +1,19 @@
 import React from 'react'
-import PropTypes from 'prop-types'
 import classnames from 'classnames'
 import lodash from 'lodash';
 
 import LayerListGroup from './LayerListGroup'
 import LayerListItem from './LayerListItem'
-import AddModal from '../modals/AddModal'
+import ModalAdd from './ModalAdd'
 
-import {SortableContainer} from 'react-sortable-hoc';
+import {SortEndHandler, SortableContainer} from 'react-sortable-hoc';
+import type {LayerSpecification} from 'maplibre-gl';
 
-const layerListPropTypes = {
+function layerPrefix(name: string) {
-  layers: PropTypes.array.isRequired,
-  selectedLayerIndex: PropTypes.number.isRequired,
-  onLayersChange: PropTypes.func.isRequired,
-  onLayerSelect: PropTypes.func,
-  sources: PropTypes.object.isRequired,
-}
-
-function layerPrefix(name) {
   return name.replace(' ', '-').replace('_', '-').split('-')[0]
 }
 
-function findClosestCommonPrefix(layers, idx) {
+function findClosestCommonPrefix(layers: LayerSpecification[], idx: number) {
   const currentLayerPrefix = layerPrefix(layers[idx].id)
   let closestIdx = idx
   for (let i = idx; i > 0; i--) {
@@ -35,28 +27,57 @@ function findClosestCommonPrefix(layers, idx) {
   return closestIdx
 }
 
+let UID = 0;
+
+type LayerListContainerProps = {
+  layers: LayerSpecification[]
+  selectedLayerIndex: number
+  onLayersChange(layers: LayerSpecification[]): unknown
+  onLayerSelect(...args: unknown[]): unknown
+  onLayerDestroy?(...args: unknown[]): unknown
+  onLayerCopy(...args: unknown[]): unknown
+  onLayerVisibilityToggle(...args: unknown[]): unknown
+  sources: object
+  errors: any[]
+};
+
+type LayerListContainerState = {
+  collapsedGroups: {[ket: string]: boolean}
+  areAllGroupsExpanded: boolean
+  keys: {[key: string]: number}
+  isOpen: {[key: string]: boolean}
+};
+
 // List of collapsible layer editors
-class LayerListContainer extends React.Component {
+class LayerListContainer extends React.Component<LayerListContainerProps, LayerListContainerState> {
-  static propTypes = {...layerListPropTypes}
   static defaultProps = {
     onLayerSelect: () => {},
   }
+  selectedItemRef: React.RefObject<any>;
+  scrollContainerRef: React.RefObject<HTMLElement>;
 
-  constructor(props) {
+  constructor(props: LayerListContainerProps) {
     super(props);
     this.selectedItemRef = React.createRef();
     this.scrollContainerRef = React.createRef();
     this.state = {
       collapsedGroups: {},
       areAllGroupsExpanded: false,
+      keys: {
+        add: UID++,
+      },
       isOpen: {
         add: false,
       }
     }
   }
 
-  toggleModal(modalName) {
+  toggleModal(modalName: string) {
     this.setState({
+      keys: {
+        ...this.state.keys,
+        [modalName]: UID++,
+      },
       isOpen: {
         ...this.state.isOpen,
         [modalName]: !this.state.isOpen[modalName]
@@ -65,9 +86,9 @@ class LayerListContainer extends React.Component {
   }
 
   toggleLayers = () => {
-    let idx=0
+    let idx = 0
 
-    let newGroups=[]
+    let newGroups: {[key:string]: boolean} = {}
 
     this.groupedLayers().forEach(layers => {
       const groupPrefix = layerPrefix(layers[0].id)
@@ -78,7 +99,7 @@ class LayerListContainer extends React.Component {
         newGroups[lookupKey] = this.state.areAllGroupsExpanded
       }
 
-      layers.forEach((layer) => {
+      layers.forEach((_layer) => {
         idx += 1
       })
     });
@@ -89,11 +110,20 @@ class LayerListContainer extends React.Component {
     })
   }
 
-  groupedLayers() {
+  groupedLayers(): (LayerSpecification & {key: string})[][] {
     const groups = []
+    const layerIdCount = new Map();
+
     for (let i = 0; i < this.props.layers.length; i++) {
+      const origLayer = this.props.layers[i];
       const previousLayer = this.props.layers[i-1]
-      const layer = this.props.layers[i]
+      layerIdCount.set(origLayer.id,
+        layerIdCount.has(origLayer.id) ? layerIdCount.get(origLayer.id) + 1 : 0
+      );
+      const layer = {
+        ...origLayer,
+        key: `layers-list-${origLayer.id}-${layerIdCount.get(origLayer.id)}`,
+      }
       if(previousLayer && layerPrefix(previousLayer.id) == layerPrefix(layer.id)) {
         const lastGroup = groups[groups.length - 1]
         lastGroup.push(layer)
@@ -104,7 +134,7 @@ class LayerListContainer extends React.Component {
     return groups
   }
 
-  toggleLayerGroup(groupPrefix, idx) {
+  toggleLayerGroup(groupPrefix: string, idx: number) {
     const lookupKey = [groupPrefix, idx].join('-')
     const newGroups = { ...this.state.collapsedGroups }
     if(lookupKey in this.state.collapsedGroups) {
@@ -117,12 +147,12 @@ class LayerListContainer extends React.Component {
     })
   }
 
-  isCollapsed(groupPrefix, idx) {
+  isCollapsed(groupPrefix: string, idx: number) {
     const collapsed = this.state.collapsedGroups[[groupPrefix, idx].join('-')]
     return collapsed === undefined ? true : collapsed
   }
 
-  shouldComponentUpdate (nextProps, nextState) {
+  shouldComponentUpdate (nextProps: LayerListContainerProps, nextState: LayerListContainerState) {
     // Always update on state change
     if (this.state !== nextState) {
       return true;
@@ -130,8 +160,8 @@ class LayerListContainer extends React.Component {
 
     // This component tree only requires id and visibility from the layers
     // objects
-    function getRequiredProps (layer) {
+    function getRequiredProps(layer: LayerSpecification) {
-      const out = {
+      const out: {id: string, layout?: { visibility: any}} = {
         id: layer.id,
       };
 
@@ -147,10 +177,10 @@ class LayerListContainer extends React.Component {
       this.props.layers.map(getRequiredProps),
     );
 
-    function withoutLayers (props) {
+    function withoutLayers(props: LayerListContainerProps) {
       const out = {
         ...props
-      };
+      } as LayerListContainerProps & { layers?: any };
       delete out['layers'];
       return out;
     }
@@ -166,7 +196,7 @@ class LayerListContainer extends React.Component {
     return propsChanged;
   }
 
-  componentDidUpdate (prevProps) {
+  componentDidUpdate (prevProps: LayerListContainerProps) {
     if (prevProps.selectedLayerIndex !== this.props.selectedLayerIndex) {
       const selectedItemNode = this.selectedItemRef.current;
       if (selectedItemNode && selectedItemNode.node) {
@@ -189,16 +219,15 @@ class LayerListContainer extends React.Component {
 
   render() {
 
-    const listItems = []
+    const listItems: JSX.Element[] = []
     let idx = 0
-    const layerIdCount = new Map();
-
     const layersByGroup = this.groupedLayers();
     layersByGroup.forEach(layers => {
       const groupPrefix = layerPrefix(layers[0].id)
       if(layers.length > 1) {
         const grp = <LayerListGroup
           data-wd-key={[groupPrefix, idx].join('-')}
+          aria-controls={layers.map(l => l.key).join(" ")}
           key={`group-${groupPrefix}-${idx}`}
           title={groupPrefix}
           isActive={!this.isCollapsed(groupPrefix, idx) || idx === this.props.selectedLayerIndex}
@@ -218,15 +247,11 @@ class LayerListContainer extends React.Component {
           );
         });
 
-        const additionalProps = {};
+        const additionalProps: {ref?: React.RefObject<any>} = {};
         if (idx === this.props.selectedLayerIndex) {
           additionalProps.ref = this.selectedItemRef;
         }
 
-        layerIdCount.set(layer.id,
-          layerIdCount.has(layer.id) ? layerIdCount.get(layer.id) + 1 : 0
-        );
-        const key = `${layer.id}-${layerIdCount.get(layer.id)}`;
         const listItem = <LayerListItem
           className={classnames({
             'maputnik-layer-list-item-collapsed': layers.length > 1 && this.isCollapsed(groupPrefix, groupIdx) && idx !== this.props.selectedLayerIndex,
@@ -234,14 +259,15 @@ class LayerListContainer extends React.Component {
             'maputnik-layer-list-item--error': !!layerError
           })}
           index={idx}
-          key={key}
+          key={layer.key}
+          id={layer.key}
           layerId={layer.id}
           layerIndex={idx}
           layerType={layer.type}
           visibility={(layer.layout || {}).visibility}
           isSelected={idx === this.props.selectedLayerIndex}
           onLayerSelect={this.props.onLayerSelect}
-          onLayerDestroy={this.props.onLayerDestroy.bind(this)}
+          onLayerDestroy={this.props.onLayerDestroy?.bind(this)}
           onLayerCopy={this.props.onLayerCopy.bind(this)}
           onLayerVisibilityToggle={this.props.onLayerVisibilityToggle.bind(this)}
           {...additionalProps}
@@ -251,8 +277,14 @@ class LayerListContainer extends React.Component {
       })
     })
 
-    return <div className="maputnik-layer-list" ref={this.scrollContainerRef}>
+    return <section
-      <AddModal
+      className="maputnik-layer-list"
+      role="complementary"
+      aria-label="Layers list"
+      ref={this.scrollContainerRef}
+    >
+      <ModalAdd
+          key={this.state.keys.add}
           layers={this.props.layers}
           sources={this.props.sources}
           isOpen={this.state.isOpen.add}
@@ -265,7 +297,8 @@ class LayerListContainer extends React.Component {
         <div className="maputnik-default-property">
           <div className="maputnik-multibutton">
             <button
-              id="skip-menu"
+              id="skip-target-layer-list"
+              data-wd-key="skip-target-layer-list"
               onClick={this.toggleLayers}
               className="maputnik-button">
               {this.state.areAllGroupsExpanded === true ? "Collapse" : "Expand"}
@@ -283,24 +316,32 @@ class LayerListContainer extends React.Component {
           </div>
         </div>
       </header>
-      <ul className="maputnik-layer-list-container">
+      <div
-        {listItems}
+        role="navigation"
-      </ul>
+        aria-label="Layers list"
-    </div>
+      >
+        <ul className="maputnik-layer-list-container">
+          {listItems}
+        </ul>
+      </div>
+    </section>
   }
 }
 
-const LayerListContainerSortable = SortableContainer((props) => <LayerListContainer {...props} />)
+const LayerListContainerSortable = SortableContainer((props: LayerListContainerProps) => <LayerListContainer {...props} />)
 
-export default class LayerList extends React.Component {
+type LayerListProps = LayerListContainerProps & {
-  static propTypes = {...layerListPropTypes}
+  onMoveLayer: SortEndHandler
+};
 
+export default class LayerList extends React.Component<LayerListProps> {
   render() {
     return <LayerListContainerSortable
       {...this.props}
       helperClass='sortableHelper'
       onSortEnd={this.props.onMoveLayer.bind(this)}
       useDragHandle={true}
+      shouldCancelStart={() => false}
     />
   }
 }