fix t-coord tiles processing

Bumps [@commitlint/cli](https://github.com/conventional-changelog/commitlint/tree/HEAD/@commitlint/cli) from 17.7.1 to 17.7.2.
- [Release notes](https://github.com/conventional-changelog/commitlint/releases)
- [Changelog](https://github.com/conventional-changelog/commitlint/blob/master/@commitlint/cli/CHANGELOG.md)
- [Commits](https://github.com/conventional-changelog/commitlint/commits/v17.7.2/@commitlint/cli)

---
updated-dependencies:
- dependency-name: "@commitlint/cli"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.dockerignore

@@ -1,6 +1,8 @@
 *
 !src
 !public
+!test
 !package.json
+!mapbox-mbtiles-0.12.2.tgz
 !package-lock.json
 !docker-entrypoint.sh

.eslintignore

@@ -0,0 +1 @@
+public

.eslintrc.cjs

@@ -0,0 +1,32 @@
+module.exports = {
+  root: true,
+  env: {
+    browser: true,
+    node: true,
+    es6: true,
+  },
+  parserOptions: {
+    parser: '@typescript-eslint/parser',
+    ecmaVersion: 2020,
+    sourceType: 'module',
+    lib: ['es2020'],
+    ecmaFeatures: {
+      jsx: true,
+      tsx: true,
+    },
+  },
+  plugins: ['prettier', 'jsdoc', 'security'],
+  extends: [
+    'prettier',
+    'plugin:@typescript-eslint/recommended',
+    'plugin:@typescript-eslint/eslint-recommended',
+    'plugin:prettier/recommended',
+    'plugin:jsdoc/recommended',
+    'plugin:security/recommended',
+  ],
+  // add your custom rules here
+  rules: {
+    'no-console': process.env.NODE_ENV === 'production' ? 'error' : 'off',
+    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
+  },
+};

.gitattributes

@@ -0,0 +1,11 @@
+###############################################################################
+# Set default behavior to automatically normalize line endings.
+###############################################################################
+* text=auto
+
+###############################################################################
+# behavior for Unix scripts
+#
+# Unix scripts are treated as binary by default.
+###############################################################################
+*.sh   eol=lf

.github/dependabot.yml

@@ -0,0 +1,19 @@
+version: 2
+updates:
+  - package-ecosystem: npm
+    versioning-strategy: increase
+    directory: '/'
+    schedule:
+      interval: daily
+    commit-message:
+      prefix: fix
+      prefix-development: chore
+      include: scope
+  - package-ecosystem: github-actions
+    directory: '/'
+    schedule:
+      interval: weekly
+    commit-message:
+      prefix: fix
+      prefix-development: chore
+      include: scope

.github/workflows/automerger.yml

@@ -0,0 +1,16 @@
+name: 'Auto Merge PRs'
+
+on:
+  workflow_call:
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: fastify/github-action-merge-dependabot@v3
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/ci.yml

@@ -0,0 +1,51 @@
+name: 'Continuous Integration'
+
+on:
+  workflow_call:
+
+permissions:
+  checks: write
+  contents: read
+
+jobs:
+  ci:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check out repository ✨ (non-dependabot)
+        if: ${{ github.actor != 'dependabot[bot]' }}
+        uses: actions/checkout@v4
+
+      - name: Check out repository 🎉 (dependabot)
+        if: ${{ github.actor == 'dependabot[bot]' }}
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Setup node env 📦
+        uses: actions/setup-node@v3
+        with:
+          node-version-file: 'package.json'
+          check-latest: true
+          cache: 'npm'
+
+      - name: Install dependencies 🚀
+        run: npm ci --prefer-offline --no-audit --omit=optional
+
+      - name: Run linter(s) 💅
+        uses: wearerequired/lint-action@v2
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          continue_on_error: false
+          git_name: github-actions[bot]
+          git_email: github-actions[bot]@users.noreply.github.com
+          auto_fix: false
+          eslint: true
+          eslint_extensions: js,cjs,mjs,ts
+          prettier: true
+          prettier_extensions: js,cjs,ts,json
+
+      - name: Run hadolint 🐳
+        uses: hadolint/hadolint-action@v3.1.0
+        with:
+          dockerfile: Dockerfile
+          ignore: DL3008,DL3015

.github/workflows/codeql.yml

@@ -0,0 +1,37 @@
+name: 'CodeQL'
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+  schedule:
+    - cron: '45 23 * * 2'
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [javascript]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v2
+        with:
+          languages: ${{ matrix.language }}
+          queries: +security-and-quality
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v2
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v2
+        with:
+          category: '/language:${{ matrix.language }}'

.github/workflows/ct.yml

@@ -0,0 +1,70 @@
+name: 'Continuous Testing'
+
+on:
+  workflow_call:
+
+permissions:
+  checks: write
+  contents: read
+
+jobs:
+  ct:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check out repository ✨ (non-dependabot)
+        if: ${{ github.actor != 'dependabot[bot]' }}
+        uses: actions/checkout@v4
+
+      - name: Check out repository 🎉 (dependabot)
+        if: ${{ github.actor == 'dependabot[bot]' }}
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Update apt-get 🚀
+        run: sudo apt-get update -qq
+
+      - name: Install dependencies (Ubuntu) 🚀
+        run: >-
+          sudo apt-get install -qq libcairo2-dev libjpeg8-dev libpango1.0-dev
+          libgif-dev build-essential g++ xvfb libgles2-mesa-dev libgbm-dev
+          libxxf86vm-dev
+
+      - name: Setup node env 📦
+        uses: actions/setup-node@v3
+        with:
+          node-version-file: 'package.json'
+          check-latest: true
+          cache: 'npm'
+
+      - name: Install dependencies 🚀
+        run: npm ci --prefer-offline --no-audit --omit=optional
+
+      - name: Pull test data 📦
+        run: >-
+          wget -O test_data.zip
+          https://github.com/maptiler/tileserver-gl/releases/download/v1.3.0/test_data.zip
+
+      - name: Prepare test data 📦
+        run: unzip -q test_data.zip -d test_data
+
+      - name: Run tests 🧪
+        run: xvfb-run --server-args="-screen 0 1024x768x24" npm test
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+        with:
+          platforms: 'arm64'
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Test Docker Build
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          push: false
+          platforms: linux/arm64,linux/amd64
+          # experimental: https://github.com/docker/build-push-action/blob/master/docs/advanced/cache.md#cache-backend-api
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.github/workflows/pipeline.yml

@@ -0,0 +1,43 @@
+name: 'The Pipeline'
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+concurrency:
+  group: ci-${{ github.ref }}-1
+  cancel-in-progress: true
+
+jobs:
+  extract-branch:
+    name: 'Fetch branch'
+    runs-on: ubuntu-latest
+    outputs:
+      current_branch: ${{ steps.get-branch.outputs.current_branch }}
+    steps:
+      - name: Extract branch name 🕊
+        id: get-branch
+        run: echo "current_branch=${GITHUB_REF##*/}" >> $GITHUB_OUTPUT
+  ci:
+    name: 'CI'
+    needs:
+      - extract-branch
+    uses: ./.github/workflows/ci.yml
+  ct:
+    name: 'CT'
+    needs:
+      - extract-branch
+    uses: ./.github/workflows/ct.yml
+  automerger:
+    name: 'Automerge Dependabot PRs'
+    needs:
+      - ci
+      - ct
+      - extract-branch
+    if: >
+      github.event_name == 'pull_request' && github.event.pull_request.user.login == 'dependabot[bot]'
+    uses: ./.github/workflows/automerger.yml

.github/workflows/release.yml

@@ -0,0 +1,118 @@
+name: 'Build, Test, Release'
+
+on:
+  workflow_dispatch:
+    inputs:
+      docker_user:
+        description: 'Docker Username'
+        required: true
+      docker_token:
+        description: 'Docker Token'
+        required: true
+      npm_token:
+        description: 'NPM Token'
+        required: true
+
+jobs:
+  release:
+    name: 'Build, Test, Publish'
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check out repository ✨
+        uses: actions/checkout@v4
+
+      - name: Update apt-get 🚀
+        run: sudo apt-get update -qq
+
+      - name: Install dependencies (Ubuntu) 🚀
+        run: >-
+          sudo apt-get install -qq libcairo2-dev libjpeg8-dev libpango1.0-dev
+          libgif-dev build-essential g++ xvfb libgles2-mesa-dev libgbm-dev
+          libxxf86vm-dev
+
+      - name: Setup node env 📦
+        uses: actions/setup-node@v3
+        with:
+          node-version-file: 'package.json'
+          check-latest: true
+          cache: 'npm'
+
+      - name: Install dependencies 🚀
+        run: npm ci --prefer-offline --no-audit --omit=optional
+
+      - name: Pull test data 📦
+        run: >-
+          wget -O test_data.zip
+          https://github.com/maptiler/tileserver-gl/releases/download/v1.3.0/test_data.zip
+
+      - name: Prepare test data 📦
+        run: unzip -q test_data.zip -d test_data
+
+      - name: Run tests 🧪
+        run: xvfb-run --server-args="-screen 0 1024x768x24" npm test
+
+      - name: Remove Test Data
+        run: rm -R test_data*
+
+      - name: Publish to Full Version NPM
+        run: |
+          npm config set //registry.npmjs.org/:_authToken ${NPM_TOKEN}
+          npm publish --access public
+        env:
+          NPM_TOKEN: ${{ github.event.inputs.npm_token }}
+
+      - name: Get version
+        run: |
+          echo "PACKAGE_VERSION=$(grep '"version"' package.json | cut -d '"' -f 4 | head -n 1)" >> $GITHUB_ENV
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+        with:
+          platforms: 'arm64'
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ github.event.inputs.docker_user }}
+          password: ${{ github.event.inputs.docker_token }}
+
+      - name: Build and publish Full Version to Docker Hub
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          push: true
+          tags: maptiler/tileserver-gl:latest, maptiler/tileserver-gl:v${{ env.PACKAGE_VERSION }}
+          platforms: linux/arm64,linux/amd64
+          # experimental: https://github.com/docker/build-push-action/blob/master/docs/advanced/cache.md#cache-backend-api
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Create Tileserver Light Directory
+        run: node publish.js --no-publish
+
+      - name: Install node dependencies
+        run: npm install
+        working-directory: ./light
+
+      - name: Publish to Light Version NPM
+        working-directory: ./light
+        run: |
+          npm config set //registry.npmjs.org/:_authToken ${NPM_TOKEN}
+          npm publish --access public
+        env:
+          NPM_TOKEN: ${{ github.event.inputs.npm_token }}
+
+      - name: Build and publish Light Version to Docker Hub
+        uses: docker/build-push-action@v4
+        with:
+          context: ./light
+          file: ./light/Dockerfile
+          push: true
+          tags: maptiler/tileserver-gl-light:latest, maptiler/tileserver-gl-light:v${{ env.PACKAGE_VERSION }}
+          platforms: linux/arm64,linux/amd64
+          # experimental: https://github.com/docker/build-push-action/blob/master/docs/advanced/cache.md#cache-backend-api
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.hadolint.yml

@@ -0,0 +1,3 @@
+ignored:
+  - DL3008
+  - DL3015

.husky/commit-msg

@@ -0,0 +1,21 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+NAME=$(git config user.name)
+EMAIL=$(git config user.email)
+
+if [ -z "$NAME" ]; then
+    echo "empty git config user.name"
+    exit 1
+fi
+
+if [ -z "$EMAIL" ]; then
+    echo "empty git config user.email"
+    exit 1
+fi
+
+git interpret-trailers --if-exists doNothing --trailer \
+    "Signed-off-by: $NAME <$EMAIL>" \
+    --in-place "$1"
+
+npm exec --no -- commitlint --edit $1

.husky/pre-push

@@ -0,0 +1,4 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+npm exec --no -- lint-staged --no-stash

.nvmrc

@@ -0,0 +1 @@
+18

.prettierignore

@@ -0,0 +1 @@
+public

.readthedocs.yaml

@@ -0,0 +1,18 @@
+# Read the Docs configuration file for Sphinx projects
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Set the version of Python and other tools you might need
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.11"
+
+# Build documentation in the doc/help/ directory with Sphinx
+sphinx:
+  configuration: docs/conf.py
+
+formats:
+    - pdf

.travis.yml

@@ -1,21 +0,0 @@
-language: node_js
-node_js:
-  - "10"
-env:
-  - CXX=g++-4.8
-addons:
-  apt:
-    sources:
-      - ubuntu-toolchain-r-test
-    packages:
-      - g++-4.8
-before_install:
-  - sudo apt-get update -qq
-  - sudo apt-get install -qq libcairo2-dev libjpeg8-dev libpango1.0-dev libgif-dev build-essential g++
-  - sudo apt-get install -qq xvfb libgles2-mesa-dev libgbm-dev libxxf86vm-dev
-install:
-  - npm install
-  - wget -O test_data.zip https://github.com/maptiler/tileserver-gl/releases/download/v1.3.0/test_data.zip
-  - unzip -q test_data.zip -d test_data
-script:
-  - xvfb-run --server-args="-screen 0 1024x768x24" npm test

Dockerfile

@@ -1,55 +1,109 @@
-FROM node:10-buster AS builder
+FROM ubuntu:focal AS builder
 
-RUN export DEBIAN_FRONTEND=noninteractive \
-  && apt-get -qq update \
-  && apt-get -y --no-install-recommends install \
-      apt-transport-https \
-      curl \
-      unzip \
+ENV NODE_ENV="production"
+
+RUN set -ex; \
+    export DEBIAN_FRONTEND=noninteractive; \
+    apt-get -qq update; \
+    apt-get -y --no-install-recommends install \
       build-essential \
-      python \
+      ca-certificates \
+      wget \
+      pkg-config \
+      xvfb \
+      libglfw3-dev \
+      libuv1-dev \
+      libjpeg-turbo8 \
+      libicu66 \
       libcairo2-dev \
-      libgles2-mesa-dev \
-      libgbm-dev \
-      libllvm7 \
-      libprotobuf-dev \
-  && apt-get -y --purge autoremove \
-  && apt-get clean \
-  && rm -rf /var/lib/apt/lists/*
+      libpango1.0-dev \
+      libjpeg-dev \
+      libgif-dev \
+      librsvg2-dev \
+      gir1.2-rsvg-2.0 \
+      librsvg2-2 \
+      librsvg2-common \
+      libcurl4-openssl-dev \
+      libpixman-1-dev \
+      libpixman-1-0; \
+      apt-get -y --purge autoremove; \
+      apt-get clean; \
+      rm -rf /var/lib/apt/lists/*;
+
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+
+RUN wget -qO- https://deb.nodesource.com/setup_18.x | bash; \
+    apt-get install -y nodejs; \
+    npm i -g npm@latest; \
+    apt-get -y remove wget; \
+    apt-get -y --purge autoremove; \
+    apt-get clean; \
+    rm -rf /var/lib/apt/lists/*;
+
+RUN mkdir -p /usr/src/app
+
+WORKDIR /usr/src/app
+
+COPY mapbox-mbtiles-0.12.2.tgz /usr/src/app
+COPY package.json /usr/src/app
+COPY package-lock.json /usr/src/app
+
+RUN npm ci --omit=dev; \
+    chown -R root:root /usr/src/app;
+
+FROM ubuntu:focal AS final
+
+ENV \
+    NODE_ENV="production" \
+    CHOKIDAR_USEPOLLING=1 \
+    CHOKIDAR_INTERVAL=500
+
+RUN set -ex; \
+    export DEBIAN_FRONTEND=noninteractive; \
+    groupadd -r node; \
+    useradd -r -g node node; \
+    apt-get -qq update; \
+    apt-get -y --no-install-recommends install \
+      ca-certificates \
+      wget \
+      xvfb \
+      libglfw3 \
+      libuv1 \
+      libjpeg-turbo8 \
+      libicu66 \
+      libcairo2 \
+      libgif7 \
+      libopengl0 \
+      libpixman-1-0 \
+      libcurl4 \
+      librsvg2-2 \
+      libpango-1.0-0; \
+      apt-get -y --purge autoremove; \
+      apt-get clean; \
+      rm -rf /var/lib/apt/lists/*;
+
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+
+RUN wget -qO- https://deb.nodesource.com/setup_18.x | bash; \ 
+    apt-get install -y nodejs; \
+    npm i -g npm@latest; \
+    apt-get -y remove wget; \
+    apt-get -y --purge autoremove; \
+    apt-get clean; \
+    rm -rf /var/lib/apt/lists/*;
+
+COPY --from=builder /usr/src/app /usr/src/app
 
 COPY . /usr/src/app
 
-ENV NODE_ENV="production"
-
-RUN cd /usr/src/app && npm install --production
-
-
-FROM node:10-buster-slim AS final
-
-RUN export DEBIAN_FRONTEND=noninteractive \
-  && apt-get -qq update \
-  && apt-get -y --no-install-recommends install \
-      libgles2-mesa \
-      libegl1 \
-      xvfb \
-      xauth \
-  && apt-get -y --purge autoremove \
-  && apt-get clean \
-  && rm -rf /var/lib/apt/lists/*
-
-COPY --from=builder /usr/src/app /app
-
-ENV NODE_ENV="production"
-ENV CHOKIDAR_USEPOLLING=1
-ENV CHOKIDAR_INTERVAL=500
-
+RUN mkdir -p /data && chown node:node /data
 VOLUME /data
 WORKDIR /data
 
-EXPOSE 8000
+EXPOSE 8080
 
 USER node:node
 
-ENTRYPOINT ["/app/docker-entrypoint.sh"]
+ENTRYPOINT ["/usr/src/app/docker-entrypoint.sh"]
 
-CMD ["-p", "8000"]
+HEALTHCHECK CMD node /usr/src/app/src/healthcheck.js

Dockerfile_light

@@ -1,13 +1,44 @@
-FROM node:10-stretch
+FROM ubuntu:focal
+
+ENV \
+    NODE_ENV="production" \
+    CHOKIDAR_USEPOLLING=1 \
+    CHOKIDAR_INTERVAL=500
+
+RUN set -ex; \
+    export DEBIAN_FRONTEND=noninteractive; \
+    groupadd -r node; \
+    useradd -r -g node node; \
+    apt-get -qq update; \
+    apt-get -y --no-install-recommends install \
+      ca-certificates \
+      wget; \
+    wget -qO- https://deb.nodesource.com/setup_18.x | bash; \
+    apt-get install -y nodejs; \
+    apt-get -y remove wget; \
+    apt-get -y --purge autoremove; \
+    apt-get clean; \
+    rm -rf /var/lib/apt/lists/*;
+
+EXPOSE 8080
+
+RUN mkdir -p /data; \
+    chown node:node /data; \
+    mkdir -p /usr/src/app;
 
-ENV NODE_ENV="production"
-ENV CHOKIDAR_USEPOLLING=1
-ENV CHOKIDAR_INTERVAL=500
-EXPOSE 80
 VOLUME /data
-WORKDIR /data
-ENTRYPOINT ["node", "/usr/src/app/", "-p", "80"]
 
-RUN mkdir -p /usr/src/app
+WORKDIR /data
+
 COPY / /usr/src/app
-RUN cd /usr/src/app && npm install --production
+
+RUN cd /usr/src/app; \
+    npm install --omit=dev; \
+    chown -R root:root /usr/src/app; \
+    chmod +x /usr/src/app/docker-entrypoint.sh;
+
+USER node:node
+
+ENTRYPOINT ["/usr/src/app/docker-entrypoint.sh"]
+
+HEALTHCHECK CMD node /usr/src/app/src/healthcheck.js

Dockerfile_test

@@ -2,33 +2,43 @@
 # Simply run "docker build -f Dockerfile_test ."
 # WARNING: sometimes it fails with a core dumped exception
 
-FROM node:10-stretch
+FROM ubuntu:focal
 
-RUN apt-get -qq update \
-&& DEBIAN_FRONTEND=noninteractive apt-get -y install \
-    apt-transport-https \
-    curl \
+ENV NODE_ENV="development"
+
+RUN set -ex; \
+    export DEBIAN_FRONTEND=noninteractive; \
+    apt-get -qq update; \
+    apt-get -y --no-install-recommends install \
       unzip \
       build-essential \
-    python \
-    libcairo2-dev \
-    libgles2-mesa-dev \
-    libgbm-dev \
-    libllvm3.9 \
-    libprotobuf-dev \
-    libxxf86vm-dev \
+      ca-certificates \
+      wget \
+      pkg-config \
       xvfb \
-&& apt-get clean
+      libglfw3-dev \
+      libuv1-dev \
+      libjpeg-turbo8 \
+      libicu66 \
+      libcairo2-dev \
+      libpango1.0-dev \
+      libjpeg-dev \
+      libgif-dev \
+      librsvg2-dev \
+      libcurl4-openssl-dev \
+      libpixman-1-dev; \
+    wget -qO- https://deb.nodesource.com/setup_18.x | bash; \
+    apt-get install -y nodejs; \
+    apt-get clean;
 
 RUN mkdir -p /usr/src/app
 WORKDIR /usr/src/app
 
-RUN wget -O test_data.zip https://github.com/maptiler/tileserver-gl/releases/download/v1.3.0/test_data.zip
-RUN unzip -q test_data.zip -d test_data
-
-ENV NODE_ENV="test"
+RUN wget -O test_data.zip https://github.com/maptiler/tileserver-gl/releases/download/v1.3.0/test_data.zip; \
+    unzip -q test_data.zip -d test_data
 
 COPY package.json .
 RUN npm install
 COPY / .
+
 RUN xvfb-run --server-args="-screen 0 1024x768x24" npm test

PUBLISHING.md

@@ -3,4 +3,11 @@
 - Update version in `package.json`
 - `git tag vx.x.x`
 - `git push --tags`
-- `node publish.js` (publishes packages to npm)
+- `docker buildx build --platform linux/amd64 -t maptiler/tileserver-gl:latest -t maptiler/tileserver-gl:[version] .`
+- `docker push maptiler/tileserver-gl --all-tags`
+- `npm publish --access public` or `node publish.js` 
+- `node publish.js --no-publish`
+- `cd light`
+- `docker buildx build --platform linux/amd64 -t maptiler/tileserver-gl-light:latest -t maptiler/tileserver-gl-light:[version] .`
+- `docker push maptiler/tileserver-gl-light --all-tags`
+- `npm publish --access public`

README.md

@@ -2,47 +2,88 @@
 
 
 # TileServer GL
-[![Build Status](https://travis-ci.org/maptiler/tileserver-gl.svg?branch=master)](https://travis-ci.org/maptiler/tileserver-gl)
+[![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/maptiler/tileserver-gl/pipeline.yml)](https://github.com/maptiler/tileserver-gl/actions/workflows/pipeline.yml)
 [![Docker Hub](https://img.shields.io/badge/docker-hub-blue.svg)](https://hub.docker.com/r/maptiler/tileserver-gl/)
 
-Vector and raster maps with GL styles. Server side rendering by Mapbox GL Native. Map tile server for Mapbox GL JS, Android, iOS, Leaflet, OpenLayers, GIS via WMTS, etc.
+Vector and raster maps with GL styles. Server-side rendering by MapLibre GL Native. Map tile server for MapLibre GL JS, Android, iOS, Leaflet, OpenLayers, GIS via WMTS, etc.
 
-## Get Started
+Download vector tiles from [OpenMapTiles](https://data.maptiler.com/downloads/planet/).
+## Getting Started with Node
 
-Make sure you have Node.js version **10** installed (running `node -v` it should output something like `v10.17.0`).
+Make sure you have Node.js version **14.20.0** or above installed. Node 18 is recommended. (running `node -v` it should output something like `v18.x.x`). Running without docker requires [Native dependencies](https://maptiler-tileserver.readthedocs.io/en/latest/installation.html#npm) to be installed first.
 
-Install `tileserver-gl` with server-side raster rendering of vector tiles with npm
+Install `tileserver-gl` with server-side raster rendering of vector tiles with npm. 
 
 ```bash
 npm install -g tileserver-gl
 ```
 
-Now download vector tiles from [OpenMapTiles](https://openmaptiles.org/downloads/).
+Once installed, you can use it like the following examples.
 
+using a mbtiles file
 ```bash
-curl -o zurich_switzerland.mbtiles https://[GET-YOUR-LINK]/extracts/zurich_switzerland.mbtiles
+wget https://github.com/maptiler/tileserver-gl/releases/download/v1.3.0/zurich_switzerland.mbtiles
+tileserver-gl --mbtiles zurich_switzerland.mbtiles
+[in your browser, visit http://[server ip]:8080]
 ```
 
-Start `tileserver-gl` with the downloaded vector tiles.
-
+using a config.json + style + mbtiles file
 ```bash
-tileserver-gl zurich_switzerland.mbtiles
+wget https://github.com/maptiler/tileserver-gl/releases/download/v1.3.0/test_data.zip
+unzip test_data.zip
+tileserver-gl
+[in your browser, visit http://[server ip]:8080]
 ```
 
-Alternatively, you can use the `tileserver-gl-light` package instead, which is pure javascript (does not have any native dependencies) and can run anywhere, but does not contain rasterization on the server side made with MapBox GL Native.
+Alternatively, you can use the `tileserver-gl-light` npm package instead, which is pure javascript, does not have any native dependencies, and can run anywhere, but does not contain rasterization on the server side made with Maplibre GL Native.
 
-## Using Docker
+## Getting Started with Docker
 
-An alternative to npm to start the packed software easier is to install [Docker](https://www.docker.com/) on your computer and then run in the directory with the downloaded MBTiles the command:
+An alternative to npm to start the packed software easier is to install [Docker](https://www.docker.com/) on your computer and then run from the tileserver-gl directory
 
+Example using a mbtiles file
 ```bash
-docker run --rm -it -v $(pwd):/data -p 8080:80 maptiler/tileserver-gl
+wget https://github.com/maptiler/tileserver-gl/releases/download/v1.3.0/zurich_switzerland.mbtiles
+docker run --rm -it -v $(pwd):/data -p 8080:8080 maptiler/tileserver-gl --mbtiles zurich_switzerland.mbtiles
+[in your browser, visit http://[server ip]:8080]
 ```
 
-This will download and start a ready to use container on your computer and the maps are going to be available in webbrowser on localhost:8080.
+Example using a config.json + style + mbtiles file
+```bash
+wget https://github.com/maptiler/tileserver-gl/releases/download/v1.3.0/test_data.zip
+unzip test_data.zip
+docker run --rm -it -v $(pwd):/data -p 8080:8080 maptiler/tileserver-gl
+[in your browser, visit http://[server ip]:8080]
+```
 
-On laptop you can use [Docker Kitematic](https://kitematic.com/) and search "tileserver-gl" and run it, then drop in the 'data' folder the MBTiles.
+Example using a different path
+```bash
+docker run --rm -it -v /your/local/config/path:/data -p 8080:8080 maptiler/tileserver-gl
+```
+replace '/your/local/config/path' with the path to your config file
+
+
+Alternatively, you can use the `maptiler/tileserver-gl-light` docker image instead, which is pure javascript, does not have any native dependencies, and can run anywhere, but does not contain rasterization on the server side made with Maplibre GL Native.
+
+## Getting Started with Linux cli
+
+Test from command line
+```bash
+wget https://github.com/maptiler/tileserver-gl/releases/download/v1.3.0/test_data.zip
+unzip -q test_data.zip -d test_data
+xvfb-run --server-args="-screen 0 1024x768x24" npm test
+```
+
+Run from command line
+```bash
+xvfb-run --server-args="-screen 0 1024x768x24" node .
+```
 
 ## Documentation
 
-You can read full documentation of this project at https://tileserver.readthedocs.io/.
+You can read the full documentation of this project at https://maptiler-tileserver.readthedocs.io/.
+
+## Alternative
+
+Discover MapTiler Server if you need a [map server with easy setup and user-friendly interface](https://www.maptiler.com/server/).
+

commitlint.config.cjs

@@ -0,0 +1,3 @@
+module.exports = {
+  extends: ['@commitlint/config-conventional'],
+};

docker-entrypoint.sh

@@ -1,23 +1,10 @@
 #!/bin/sh
-
-set -e
-
-handle() {
-	SIGNAL=$(( $? - 128 ))
-	echo "Caught signal ${SIGNAL}, stopping gracefully"
-	kill -s ${SIGNAL} $(pidof node) 2>/dev/null
-}
-
-trap handle INT TERM
-
 if ! which -- "${1}"; then
   # first arg is not an executable
-  xvfb-run -a --server-args="-screen 0 1024x768x24" -- node /app/ "$@" &
-	# Wait exits immediately on signals which have traps set. Store return value and wait
-	# again for all jobs to actually complete before continuing.
-	wait $! || RETVAL=$?
-	wait
-	exit ${RETVAL}
+  if [ -e /tmp/.X99-lock ]; then rm /tmp/.X99-lock -f; fi
+  export DISPLAY=:99
+  Xvfb "${DISPLAY}" -nolisten unix &
+  exec node /usr/src/app/ "$@"
 fi
 
 exec "$@"

docker-entrypoint_light.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+if ! which -- "${1}"; then
+  # first arg is not an executable
+  exec node /usr/src/app/ "$@"
+fi
+
+exec "$@"

docs/conf.py

@@ -44,7 +44,7 @@ master_doc = 'index'
 
 # General information about the project.
 project = u'TileServer GL'
-copyright = u'2016, Klokan Technologies GmbH'
+copyright = u'2023, MapTiler.com'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
@@ -197,7 +197,7 @@ latex_elements = {
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
   ('index', 'TileServerGL.tex', u'TileServer GL Documentation',
-   u'Klokan Technologies GmbH', 'manual'),
+   u'MapTiler.com', 'manual'),
 ]
 
 # The name of an image file (relative to this directory) to place at the top of
@@ -227,7 +227,7 @@ latex_documents = [
 # (source start file, name, description, authors, manual section).
 man_pages = [
     ('index', 'tileservergl', u'TileServer GL Documentation',
-     [u'Klokan Technologies GmbH'], 1)
+     [u'MapTiler.com'], 1)
 ]
 
 # If true, show URL addresses after external links.
@@ -241,7 +241,7 @@ man_pages = [
 #  dir menu entry, description, category)
 texinfo_documents = [
   ('index', 'TileServerGL', u'TileServer GL Documentation',
-   u'Klokan Technologies GmbH', 'TileServerGL', 'One line description of project.',
+   u'MapTiler.com', 'TileServerGL', 'One line description of project.',
    'Miscellaneous'),
 ]
 

docs/config.rst

@@ -14,6 +14,7 @@ Example:
         "root": "",
         "fonts": "fonts",
         "sprites": "sprites",
+        "icons": "icons",
         "styles": "styles",
         "mbtiles": ""
       },
@@ -31,6 +32,7 @@ Example:
       "serveAllFonts": false,
       "serveAllStyles": false,
       "serveStaticMaps": true,
+      "allowRemoteMarkerIcons": true,
       "tileMargin": 0
     },
     "styles": {
@@ -141,6 +143,13 @@ Optional string to be rendered into the raster tiles (and static maps) as waterm
 Can be used for hard-coding attributions etc. (can also be specified per-style).
 Not used by default.
 
+``allowRemoteMarkerIcons``
+--------------
+
+Allows the rendering of marker icons fetched via http(s) hyperlinks.
+For security reasons only allow this if you can control the origins from where the markers are fetched!
+Default is to disallow fetching of icons from remote sources.
+
 ``styles``
 ==========
 

docs/deployment.rst

@@ -2,12 +2,64 @@
 Deployment
 ==========
 
-Typically - you should use nginx/lighttpd/apache on the frontend - and the tileserver-gl server is hidden behind it in production deployment.
+Typically, you should use nginx, lighttpd or apache on the frontend. The tileserver-gl server is hidden behind it in production deployment.
 
 Caching
 =======
 
-There is a plenty of options you can use to create proper caching infrastructure: Varnish, CloudFlare, ...
+There is a plenty of options you can use to create proper caching infrastructure: Varnish, Cloudflare, ...
+
+Cloudflare Cache Rules
+-----------
+
+Cloudflare supports custom rules for configuring caching:
+https://developers.cloudflare.com/cache/about/cache-rules/
+
+tileserver-gl renders tiles in multiple formats - ``.png``, ``.jpg (jpeg)``, ``.webp`` for the raster endpoints, ``.pbf`` for vector endpoint. In addition, style information is generated with ``.json`` format.
+
+Endpoint data can be configured to be cached by Cloudflare. For example to cache vector endpoint you will need to configure Cloudflare rules for the ``.pbf`` and ``.json`` data.
+
+Create a rule which matches ``hostname (equal)`` and ``URI Path (ends with)`` for ``.pbf`` and ``.json`` fields. Set cache status to eligible for cache to enable the caching and overwrite the ``Edge TTL`` with ``Browser TTL`` to be 7 days (depends on your application usage).
+
+This will ensure that your tiles are cached on the client side and by Cloudflare for seven days. If the tileserver is down or user has no internet access it will try to use cached tiles.
+
+Note that ``Browser TTL`` will overwrite expiration dates on the client device. If you rebuild your maps, old tiles will be rendered until it expires or cache is cleared on the client device.
+
+Nginx Cache
+-----------
+
+If you have a reverse proxy setup in front of the tileserver you may want to enable caching as it will greatly offload requests from the application.
+
+Configure the proxy cache path directive to initialize your cache store:
+
+::
+
+  proxy_cache_path /var/cache/nginx/tileserver
+                   keys_zone=TileserverCache:50m
+                   levels=1:2
+                   inactive=2w
+                   max_size=10g;
+
+Make sure to give proper permissions for the /var/cache/nginx/tileserver folder. Usually nginx is running with www-data user.
+Enable caching on specific proxy pass:
+
+::
+
+  location / {
+    include proxy_params; 
+    proxy_pass http://127.0.0.1:8080/;
+
+    proxy_cache TileserverCache;
+    proxy_cache_valid 200 1w;
+
+    # add_header X-Cache-Status $upstream_cache_status;
+  }
+
+If you need to confirm whether caching works or not, uncomment the X-Cache-Status header. This will return a header on response with `HIT` or `MISS` header value which indicates if nginx cached the response or not.
+
+Make sure to clean your cache by removing files in the configured directory after you change your styles or tile information. You may experiment with the caching values to fit your needs.
+
+More about Nginx caching: https://docs.nginx.com/nginx/admin-guide/content-cache/content-caching/
 
 Securing
 ========
@@ -17,4 +69,69 @@ Nginx can be used to add protection via https, password, referrer, IP address re
 Running behind a proxy or a load-balancer
 =========================================
 
-If you need to run TileServer GL behind a proxy, make sure the proxy sends ``X-Forwarded-*`` headers to the server (most importantly ``X-Forwarded-Host`` and ``X-Forwarded-Proto``) to ensures the URLs generated inside TileJSON etc. are using the desired domain and protocol.
+If you need to run TileServer GL behind a proxy, make sure the proxy sends ``X-Forwarded-*`` headers to the server (most importantly ``X-Forwarded-Host`` and ``X-Forwarded-Proto``) to ensure the URLs generated inside TileJSON, etc. are using the desired domain and protocol.
+
+Nginx Reverse Proxy
+-----------
+
+An example nginx reverse proxy server configuration for HTTPS connections. It enables caching, CORS and Cloudflare Authenticated Pulls.
+
+::
+
+  proxy_cache_path /var/cache/nginx/tileserver
+                   keys_zone=TileserverCache:50m 
+                   levels=1:2
+                   inactive=2w
+                   max_size=1g;
+
+  map_hash_bucket_size 128;
+  map $http_origin $allow_origin {
+      https://www.example.com $http_origin;
+      default "";
+  }
+
+  server {
+    listen 443 ssl http2;
+    listen [::]:443 ssl http2;
+
+    ssl_certificate         /etc/ssl/www.example.com/cert.pem;
+    ssl_certificate_key     /etc/ssl/www.example.com/key.pem;
+
+    # https://developers.cloudflare.com/ssl/origin-configuration/authenticated-origin-pull/
+    ssl_client_certificate  /etc/ssl/cloudflare.pem;
+    ssl_verify_client on;
+
+    server_name www.example.com example.com;
+
+    # Disable root application access. You may want to allow this in development.
+    location ~ ^/$ {
+      return 404;
+    }
+
+    # Disable root application access. You may want to allow this in development.
+    location /favicon.ico {
+      return 404;
+    }
+
+    location / {
+      # This include directive sets up required headers for proxy and proxy cache.
+      # As well it includes the required ``X-Forwarded-*`` headers for tileserver to properly generate tiles.
+      include proxy_params;
+
+      proxy_pass http://127.0.0.1:8080/;
+
+      # Disable default CORS headers
+      proxy_hide_header Access-Control-Allow-Origin;
+
+      # Enable proxy cache
+      proxy_cache TileserverCache;
+      proxy_cache_valid 200 1w;
+
+      # Set our custom CORS
+      add_header 'Access-Control-Allow-Origin' $allow_origin;
+      
+      # If you need to see nginx cache status. Uncomment line below.
+      # add_header X-Cache-Status $upstream_cache_status;
+    }
+  }
+

docs/endpoints.rst

@@ -35,18 +35,56 @@ Static images
 
 * All the static image endpoints additionally support following query parameters:
 
-  * ``path`` - comma-separated ``lng,lat``, pipe-separated pairs
+  * ``path`` - ``((fill|stroke|width)\:[^\|]+\|)*((enc:.+)|((-?\d+\.?\d*,-?\d+\.?\d*\|)+(-?\d+\.?\d*,-?\d+\.?\d*)))``
 
-    * e.g. ``5.9,45.8|5.9,47.8|10.5,47.8|10.5,45.8|5.9,45.8``
+    * comma-separated ``lng,lat``, pipe-separated pairs
 
-  * ``latlng`` - indicates the ``path`` coordinates are in ``lat,lng`` order rather than the usual ``lng,lat``
+      * e.g. ``path=5.9,45.8|5.9,47.8|10.5,47.8|10.5,45.8|5.9,45.8``
+
+    * `Google Encoded Polyline Format <https://developers.google.com/maps/documentation/utilities/polylinealgorithm>`_
+
+      * e.g. ``path=enc:_p~iF~ps|U_ulLnnqC_mqNvxq`@``
+      * If 'enc:' is used, the rest of the path parameter is considered to be part of the encoded polyline string -- do not specify the coordinate pairs.
+
+    * With options (fill|stroke|width)
+
+      * e.g. ``path=stroke:yellow|width:2|fill:green|5.9,45.8|5.9,47.8|10.5,47.8|10.5,45.8|5.9,45.8`` or ``path=stroke:blue|width:1|fill:yellow|enc:_p~iF~ps|U_ulLnnqC_mqNvxq`@``
+
+    * can be provided multiple times  
+
+  * ``latlng`` - indicates coordinates are in ``lat,lng`` order rather than the usual ``lng,lat``
   * ``fill`` - color to use as the fill (e.g. ``red``, ``rgba(255,255,255,0.5)``, ``#0000ff``)
   * ``stroke`` - color of the path stroke
   * ``width`` - width of the stroke
+  * ``linecap`` - rendering style for the start and end points of the path
+  * ``linejoin`` - rendering style for overlapping segments of the path with differing directions
+  * ``border`` - color of the optional border path stroke
+  * ``borderwidth`` - width of the border stroke (default 10% of width)
+  * ``marker`` - Marker in format ``lng,lat|iconPath|option|option|...``
+
+    * Will be rendered with the bottom center at the provided location
+    * ``lng,lat`` and ``iconPath`` are mandatory and icons won't be rendered without them
+    * ``iconPath`` is either a link to an image served via http(s) or a path to a file relative to the configured icon path
+    * ``option`` must adhere to the format ``optionName:optionValue`` and supports the following names
+
+      * ``scale`` - Factor to scale image by
+
+        * e.g. ``0.5`` - Scales the image to half it's original size
+
+      * ``offset`` - Image offset as positive or negative pixel value in format ``[offsetX],[offsetY]``
+
+        * scales with ``scale`` parameter since image placement is relative to it's size
+        * e.g. ``2,-4`` - Image will be moved 2 pixel to the right and 4 pixel in the upwards direction from the provided location
+
+    * e.g. ``5.9,45.8|marker-start.svg|scale:0.5|offset:2,-4``
+    * can be provided multiple times
+
   * ``padding`` - "percentage" padding for fitted endpoints (area-based and path autofit)
 
     * value of ``0.1`` means "add 10% size to each side to make sure the area of interest is nicely visible"
 
+  * ``maxzoom`` - Maximum zoom level (only for auto endpoint where zoom level is calculated and not provided)
+
 * You can also use (experimental) ``/styles/{id}/static/raw/...`` endpoints with raw spherical mercator coordinates (EPSG:3857) instead of WGS84.
 
 * The static images are not available in the ``tileserver-gl-light`` version.

docs/installation.rst

@@ -7,7 +7,7 @@ Docker
 
 When running docker image, no special installation is needed -- the docker will automatically download the image if not present.
 
-Just run ``docker run --rm -it -v $(pwd):/data -p 8080:80 maptiler/tileserver-gl``.
+Just run ``docker run --rm -it -v $(pwd):/data -p 8080:8080 maptiler/tileserver-gl``.
 
 Additional options (see :doc:`/usage`) can be passed to the TileServer GL by appending them to the end of this command. You can, for example, do the following:
 
@@ -26,11 +26,30 @@ Native dependencies
 There are some native dependencies that you need to make sure are installed if you plan to run the TileServer GL natively without docker.
 The precise package names you need to install may differ on various platforms.
 
-These are required on Debian 9:
-  * ``build-essential``
-  * ``libcairo2-dev``
-  * ``libprotobuf-dev``
+These are required on Debian 11:
+  * ``libgles2-mesa``
+  * ``libegl1``
+  * ``xvfb``
+  * ``xauth``
+  * ``libopengl0``
+  * ``libcurl4``
+  * ``curl``
+  * ``libuv1-dev``
+  * ``libc6-dev``
+  * ``http://archive.ubuntu.com/ubuntu/pool/main/libj/libjpeg-turbo/libjpeg-turbo8_2.0.3-0ubuntu1_amd64.deb``
+  * ``http://archive.ubuntu.com/ubuntu/pool/main/i/icu/libicu66_66.1-2ubuntu2_amd64.deb``
 
+These are required on Ubuntu 20.04:
+  * ``libcairo2-dev``
+  * ``libjpeg8-dev``
+  * ``libpango1.0-dev``
+  * ``libgif-dev``
+  * ``build-essential``
+  * ``g++``
+  * ``xvfb``
+  * ``libgles2-mesa-dev``
+  * ``libgbm-dev``
+  * ``libxxf86vm-dev``
 
 ``tileserver-gl-light`` on npm
 ==============================
@@ -41,7 +60,7 @@ Alternatively, you can use ``tileserver-gl-light`` package instead, which is pur
 From source
 ===========
 
-Make sure you have Node v10 (nvm install 10) and run::
+Make sure you have Node v18 (nvm install 18) and run::
 
   npm install
   node .

docs/usage.rst

@@ -29,8 +29,16 @@ Default preview style and configuration
 - If no configuration file is specified, a default preview style (compatible with openmaptiles) is used.
 - If no mbtiles file is specified (and is not found in the current working directory), a sample file is downloaded (showing the Zurich area)
 
-Reloading configuration
+Reloading the configuration
 ======
 
 It is possible to reload the configuration file without restarting the whole process by sending a SIGHUP signal to the node process.
-However, this does not currently work when running the tileserver-gl docker container (the signal is not passed to the subprocess, see https://github.com/maptiler/tileserver-gl/issues/420#issuecomment-597507663).
+
+- The `docker kill -s HUP tileserver-gl` command can be used when running the tileserver-gl docker container.
+- The `docker-compose kill -s HUP tileserver-gl-service-name` can be used when tileserver-gl is run as a docker-compose service.
+
+Docker and `--port`
+======
+
+When running tileserver-gl in a Docker container, using the `--port` option would make the container incorrectly seem unhealthy.
+Instead, it is advised to use Docker's port mapping and map the default port 8080 to the desired external port.

lint-staged.config.cjs

@@ -0,0 +1,4 @@
+module.exports = {
+  '*.{js,ts}': 'npm run lint:js',
+  '*.{yml}': 'npm run lint:yml',
+};

package.json

@@ -1,49 +1,83 @@
 {
   "name": "tileserver-gl",
-  "version": "3.1.0",
+  "version": "4.5.1",
   "description": "Map tile server for JSON GL styles - vector and server side generated raster tiles",
   "main": "src/main.js",
   "bin": "src/main.js",
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/maptiler/tileserver-gl.git"
-  },
-  "license": "BSD-2-Clause",
-  "engines": {
-    "node": ">=10 <11"
-  },
+  "type": "module",
   "scripts": {
     "test": "mocha test/**.js --timeout 10000",
-    "docker": "docker build -f Dockerfile . && docker run --rm -i -p 8080:80 $(docker build -q .)"
+    "lint:yml": "yamllint --schema=CORE_SCHEMA *.{yml,yaml}",
+    "lint:js": "npm run lint:eslint && npm run lint:prettier",
+    "lint:js:fix": "npm run lint:eslint:fix && npm run lint:prettier:fix",
+    "lint:eslint": "eslint \"{,!(node_modules|dist|static|public)/**/}*.{js,ts,cjs,mjs}\" --ignore-path .gitignore",
+    "lint:eslint:fix": "eslint --fix \"{,!(node_modules|dist|static|public)/**/}*.{js,ts,cjs,mjs}\" --ignore-path .gitignore",
+    "lint:prettier": "prettier --check \"{,!(node_modules|dist|static|public)/**/}*.{js,ts,cjs,mjs,json}\" --ignore-path .gitignore",
+    "lint:prettier:fix": "prettier --write \"{,!(node_modules|dist|static|public)/**/}*.{js,ts,cjs,mjs,json}\" --ignore-path .gitignore",
+    "docker": "docker build -f Dockerfile . && docker run --rm -i -p 8080:8080 $(docker build -q .)",
+    "prepare": "node -e \"if (process.env.NODE_ENV !== 'production'){ process.exit(1) } \" || husky install"
   },
   "dependencies": {
     "@mapbox/glyph-pbf-composite": "0.0.3",
-    "@mapbox/mapbox-gl-native": "5.0.2",
-    "@mapbox/mapbox-gl-style-spec": "13.12.0",
-    "@mapbox/mbtiles": "0.11.0",
-    "@mapbox/sphericalmercator": "1.1.0",
+    "@mapbox/mbtiles": "file:/./mapbox-mbtiles-0.12.2.tgz",
+    "@mapbox/polyline": "^1.2.1",
+    "@mapbox/sphericalmercator": "1.2.0",
     "@mapbox/vector-tile": "1.3.1",
+    "@maplibre/maplibre-gl-native": "5.2.0",
+    "@maplibre/maplibre-gl-style-spec": "18.0.0",
     "advanced-pool": "0.3.3",
-    "canvas": "2.6.1",
-    "chokidar": "3.3.1",
+    "canvas": "2.11.2",
+    "chokidar": "3.5.3",
     "clone": "2.1.2",
-    "color": "3.1.2",
-    "commander": "4.1.1",
+    "color": "4.2.3",
+    "commander": "11.0.0",
     "cors": "2.8.5",
-    "esm": "3.2.25",
-    "express": "4.17.1",
-    "handlebars": "4.7.3",
+    "express": "4.18.2",
+    "handlebars": "4.7.8",
     "http-shutdown": "1.2.2",
-    "morgan": "1.9.1",
+    "morgan": "1.10.0",
     "pbf": "3.2.1",
-    "proj4": "2.6.0",
+    "proj4": "2.9.0",
     "request": "2.88.2",
-    "sharp": "0.26.2",
+    "sanitize-filename": "1.6.3",
+    "sharp": "0.32.6",
     "tileserver-gl-styles": "2.0.0"
   },
   "devDependencies": {
-    "mocha": "^7.1.0",
+    "@commitlint/cli": "^17.7.2",
+    "@commitlint/config-conventional": "^17.7.0",
+    "@typescript-eslint/eslint-plugin": "^5.61.0",
+    "@typescript-eslint/parser": "^5.62.0",
+    "chai": "4.3.10",
+    "eslint": "^8.50.0",
+    "eslint-config-prettier": "^9.0.0",
+    "eslint-plugin-jsdoc": "^46.8.2",
+    "eslint-plugin-prettier": "^4.2.1",
+    "eslint-plugin-security": "^1.7.1",
+    "husky": "^8.0.3",
+    "lint-staged": "^14.0.1",
+    "mocha": "^10.2.0",
+    "prettier": "^2.8.8",
     "should": "^13.2.3",
-    "supertest": "^4.0.2"
-  }
+    "supertest": "^6.3.3",
+    "yaml-lint": "^1.7.0"
+  },
+  "keywords": [
+    "maptiler",
+    "tileserver-gl",
+    "maplibre-gl",
+    "tileserver"
+  ],
+  "license": "BSD-2-Clause",
+  "engines": {
+    "node": ">=14.20.0 <19"
+  },
+  "repository": {
+    "url": "git+https://github.com/maptiler/tileserver-gl.git",
+    "type": "git"
+  },
+  "bugs": {
+    "url": "https://github.com/maptiler/tileserver-gl/issues"
+  },
+  "homepage": "https://github.com/maptiler/tileserver-gl#readme"
 }

prettier.config.cjs

@@ -0,0 +1,13 @@
+module.exports = {
+  $schema: 'http://json.schemastore.org/prettierrc',
+  semi: true,
+  arrowParens: 'always',
+  singleQuote: true,
+  trailingComma: 'all',
+  bracketSpacing: true,
+  htmlWhitespaceSensitivity: 'css',
+  insertPragma: false,
+  tabWidth: 2,
+  useTabs: false,
+  endOfLine: 'lf',
+};

public/resources/L.TileLayer.NoGap.js

@@ -0,0 +1,243 @@
+// @class TileLayer
+
+L.TileLayer.mergeOptions({
+	// @option keepBuffer
+	// The amount of tiles outside the visible map area to be kept in the stitched
+	// `TileLayer`.
+
+	// @option dumpToCanvas: Boolean = true
+	// Whether to dump loaded tiles to a `<canvas>` to prevent some rendering
+	// artifacts. (Disabled by default in IE)
+	dumpToCanvas: L.Browser.canvas && !L.Browser.ie,
+});
+
+L.TileLayer.include({
+	_onUpdateLevel: function(z, zoom) {
+		if (this.options.dumpToCanvas) {
+			this._levels[z].canvas.style.zIndex =
+				this.options.maxZoom - Math.abs(zoom - z);
+		}
+	},
+
+	_onRemoveLevel: function(z) {
+		if (this.options.dumpToCanvas) {
+			L.DomUtil.remove(this._levels[z].canvas);
+		}
+	},
+
+	_onCreateLevel: function(level) {
+		if (this.options.dumpToCanvas) {
+			level.canvas = L.DomUtil.create(
+				"canvas",
+				"leaflet-tile-container leaflet-zoom-animated",
+				this._container
+			);
+			level.ctx = level.canvas.getContext("2d");
+			this._resetCanvasSize(level);
+		}
+	},
+
+	_removeTile: function(key) {
+		if (this.options.dumpToCanvas) {
+			var tile = this._tiles[key];
+			var level = this._levels[tile.coords.z];
+			var tileSize = this.getTileSize();
+
+			if (level) {
+				// Where in the canvas should this tile go?
+				var offset = L.point(tile.coords.x, tile.coords.y)
+					.subtract(level.canvasRange.min)
+					.scaleBy(this.getTileSize());
+
+				level.ctx.clearRect(offset.x, offset.y, tileSize.x, tileSize.y);
+			}
+		}
+
+		L.GridLayer.prototype._removeTile.call(this, key);
+	},
+
+	_resetCanvasSize: function(level) {
+		var buff = this.options.keepBuffer,
+			pixelBounds = this._getTiledPixelBounds(this._map.getCenter()),
+			tileRange = this._pxBoundsToTileRange(pixelBounds),
+			tileSize = this.getTileSize();
+
+		tileRange.min = tileRange.min.subtract([buff, buff]); // This adds the no-prune buffer
+		tileRange.max = tileRange.max.add([buff + 1, buff + 1]);
+
+		var pixelRange = L.bounds(
+				tileRange.min.scaleBy(tileSize),
+				tileRange.max.add([1, 1]).scaleBy(tileSize) // This prevents an off-by-one when checking if tiles are inside
+			),
+			mustRepositionCanvas = false,
+			neededSize = pixelRange.max.subtract(pixelRange.min);
+
+		// Resize the canvas, if needed, and only to make it bigger.
+		if (
+			neededSize.x > level.canvas.width ||
+			neededSize.y > level.canvas.height
+		) {
+			// Resizing canvases erases the currently drawn content, I'm afraid.
+			// To keep it, dump the pixels to another canvas, then display it on
+			// top. This could be done with getImageData/putImageData, but that
+			// would break for tainted canvases (in non-CORS tilesets)
+			var oldSize = { x: level.canvas.width, y: level.canvas.height };
+			// console.info('Resizing canvas from ', oldSize, 'to ', neededSize);
+
+			var tmpCanvas = L.DomUtil.create("canvas");
+			tmpCanvas.style.width = (tmpCanvas.width = oldSize.x) + "px";
+			tmpCanvas.style.height = (tmpCanvas.height = oldSize.y) + "px";
+			tmpCanvas.getContext("2d").drawImage(level.canvas, 0, 0);
+			// var data = level.ctx.getImageData(0, 0, oldSize.x, oldSize.y);
+
+			level.canvas.style.width = (level.canvas.width = neededSize.x) + "px";
+			level.canvas.style.height = (level.canvas.height = neededSize.y) + "px";
+			level.ctx.drawImage(tmpCanvas, 0, 0);
+			// level.ctx.putImageData(data, 0, 0, 0, 0, oldSize.x, oldSize.y);
+		}
+
+		// Translate the canvas contents if it's moved around
+		if (level.canvasRange) {
+			var offset = level.canvasRange.min
+				.subtract(tileRange.min)
+				.scaleBy(this.getTileSize());
+
+			// 			console.info('Offsetting by ', offset);
+
+			if (!L.Browser.safari) {
+				// By default, canvases copy things "on top of" existing pixels, but we want
+				// this to *replace* the existing pixels when doing a drawImage() call.
+				// This will also clear the sides, so no clearRect() calls are needed to make room
+				// for the new tiles.
+				level.ctx.globalCompositeOperation = "copy";
+				level.ctx.drawImage(level.canvas, offset.x, offset.y);
+				level.ctx.globalCompositeOperation = "source-over";
+			} else {
+				// Safari clears the canvas when copying from itself :-(
+				if (!this._tmpCanvas) {
+					var t = (this._tmpCanvas = L.DomUtil.create("canvas"));
+					t.width = level.canvas.width;
+					t.height = level.canvas.height;
+					this._tmpContext = t.getContext("2d");
+				}
+				this._tmpContext.clearRect(
+					0,
+					0,
+					level.canvas.width,
+					level.canvas.height
+				);
+				this._tmpContext.drawImage(level.canvas, 0, 0);
+				level.ctx.clearRect(0, 0, level.canvas.width, level.canvas.height);
+				level.ctx.drawImage(this._tmpCanvas, offset.x, offset.y);
+			}
+
+			mustRepositionCanvas = true; // Wait until new props are set
+		}
+
+		level.canvasRange = tileRange;
+		level.canvasPxRange = pixelRange;
+		level.canvasOrigin = pixelRange.min;
+
+		// console.log('Canvas tile range: ', level, tileRange.min, tileRange.max );
+		// console.log('Canvas pixel range: ', pixelRange.min, pixelRange.max );
+		// console.log('Level origin: ', level.origin );
+
+		if (mustRepositionCanvas) {
+			this._setCanvasZoomTransform(
+				level,
+				this._map.getCenter(),
+				this._map.getZoom()
+			);
+		}
+	},
+
+	/// set transform/position of canvas, in addition to the transform/position of the individual tile container
+	_setZoomTransform: function(level, center, zoom) {
+		L.GridLayer.prototype._setZoomTransform.call(this, level, center, zoom);
+		if (this.options.dumpToCanvas) {
+			this._setCanvasZoomTransform(level, center, zoom);
+		}
+	},
+
+	// This will get called twice:
+	// * From _setZoomTransform
+	// * When the canvas has shifted due to a new tile being loaded
+	_setCanvasZoomTransform: function(level, center, zoom) {
+		// console.log('_setCanvasZoomTransform', level, center, zoom);
+		if (!level.canvasOrigin) {
+			return;
+		}
+		var scale = this._map.getZoomScale(zoom, level.zoom),
+			translate = level.canvasOrigin
+				.multiplyBy(scale)
+				.subtract(this._map._getNewPixelOrigin(center, zoom))
+				.round();
+
+		if (L.Browser.any3d) {
+			L.DomUtil.setTransform(level.canvas, translate, scale);
+		} else {
+			L.DomUtil.setPosition(level.canvas, translate);
+		}
+	},
+
+	_onOpaqueTile: function(tile) {
+		if (!this.options.dumpToCanvas) {
+			return;
+		}
+
+		// Guard against an NS_ERROR_NOT_AVAILABLE (or similar) exception
+		// when a non-image-tile has been loaded (e.g. a WMS error).
+		// Checking for tile.el.complete is not enough, as it has been
+		// already marked as loaded and ready somehow.
+		try {
+			this.dumpPixels(tile.coords, tile.el);
+		} catch (ex) {
+			return this.fire("tileerror", {
+				error: "Could not copy tile pixels: " + ex,
+				tile: tile,
+				coods: tile.coords,
+			});
+		}
+
+		// If dumping the pixels was successful, then hide the tile.
+		// Do not remove the tile itself, as it is needed to check if the whole
+		// level (and its canvas) should be removed (via level.el.children.length)
+		tile.el.style.display = "none";
+	},
+
+	// @section Extension methods
+	// @uninheritable
+
+	// @method dumpPixels(coords: Object, imageSource: CanvasImageSource): this
+	// Dumps pixels from the given `CanvasImageSource` into the layer, into
+	// the space for the tile represented by the `coords` tile coordinates (an object
+	// like `{x: Number, y: Number, z: Number}`; the image source must have the
+	// same size as the `tileSize` option for the layer. Has no effect if `dumpToCanvas`
+	// is `false`.
+	dumpPixels: function(coords, imageSource) {
+		var level = this._levels[coords.z],
+			tileSize = this.getTileSize();
+
+		if (!level.canvasRange || !this.options.dumpToCanvas) {
+			return;
+		}
+
+		// Check if the tile is inside the currently visible map bounds
+		// There is a possible race condition when tiles are loaded after they
+		// have been panned outside of the map.
+		if (!level.canvasRange.contains(coords)) {
+			this._resetCanvasSize(level);
+		}
+
+		// Where in the canvas should this tile go?
+		var offset = L.point(coords.x, coords.y)
+			.subtract(level.canvasRange.min)
+			.scaleBy(this.getTileSize());
+
+		level.ctx.drawImage(imageSource, offset.x, offset.y, tileSize.x, tileSize.y);
+
+		// TODO: Clear the pixels of other levels' canvases where they overlap
+		// this newly dumped tile.
+		return this;
+	},
+});

public/resources/index.css

@@ -28,11 +28,11 @@ body{
   background-image: url(/images/header-map-1280px.png);
 }
 a {
-  color: #499DCE;
-  transition: color .2s;
+  color: #499dce;
+  transition: color 0.2s;
 }
 a:hover {
-  color: #395D73;
+  color: #395d73;
 }
 .title {
   font-weight: bold;
@@ -42,13 +42,13 @@ a:hover {
   position: relative;
 }
 .title.light:after {
-  content: "light";
+  content: 'light';
   display: block;
   position: absolute;
   left: 50%;
   bottom: -5px;
-  color: #499DCE;
-  font-size:.8em;
+  color: #499dce;
+  font-size: 0.8em;
 }
 section {
   margin: 15px auto;
@@ -120,14 +120,14 @@ section {
   padding: 0;
   overflow: hidden;
   border-radius: 4px;
-  background-color: #499DCE;
+  background-color: #499dce;
   background: linear-gradient(90deg, #5aaad8, #4a9ecf);
   color: #fff;
   text-decoration: none;
   font-weight: bold;
 }
 .btn:first-child:hover {
-  background: #395D73;
+  background: #395d73;
 }
 footer {
   width: 100%;
@@ -151,7 +151,8 @@ footer a {
   color: #787878;
   text-decoration: none;
 }
-.details h3, .identifier {
+.details h3,
+.identifier {
   max-width: 550px;
   word-break: break-all;
 }
@@ -169,7 +170,7 @@ footer a {
     margin: 25px 0 0 0;
   }
   .title.light:after {
-    font-size:.6em;
+    font-size: 0.6em;
   }
   .title img {
     width: 200px;

public/resources/leaflet.css

@@ -0,0 +1,656 @@
+/* required styles */
+
+.leaflet-pane,
+.leaflet-tile,
+.leaflet-marker-icon,
+.leaflet-marker-shadow,
+.leaflet-tile-container,
+.leaflet-pane > svg,
+.leaflet-pane > canvas,
+.leaflet-zoom-box,
+.leaflet-image-layer,
+.leaflet-layer {
+	position: absolute;
+	left: 0;
+	top: 0;
+	}
+.leaflet-container {
+	overflow: hidden;
+	}
+.leaflet-tile,
+.leaflet-marker-icon,
+.leaflet-marker-shadow {
+	-webkit-user-select: none;
+	   -moz-user-select: none;
+	        user-select: none;
+	  -webkit-user-drag: none;
+	}
+/* Prevents IE11 from highlighting tiles in blue */
+.leaflet-tile::selection {
+	background: transparent;
+}
+/* Safari renders non-retina tile on retina better with this, but Chrome is worse */
+.leaflet-safari .leaflet-tile {
+	image-rendering: -webkit-optimize-contrast;
+	}
+/* hack that prevents hw layers "stretching" when loading new tiles */
+.leaflet-safari .leaflet-tile-container {
+	width: 1600px;
+	height: 1600px;
+	-webkit-transform-origin: 0 0;
+	}
+.leaflet-marker-icon,
+.leaflet-marker-shadow {
+	display: block;
+	}
+/* .leaflet-container svg: reset svg max-width decleration shipped in Joomla! (joomla.org) 3.x */
+/* .leaflet-container img: map is broken in FF if you have max-width: 100% on tiles */
+.leaflet-container .leaflet-overlay-pane svg {
+	max-width: none !important;
+	max-height: none !important;
+	}
+.leaflet-container .leaflet-marker-pane img,
+.leaflet-container .leaflet-shadow-pane img,
+.leaflet-container .leaflet-tile-pane img,
+.leaflet-container img.leaflet-image-layer,
+.leaflet-container .leaflet-tile {
+	max-width: none !important;
+	max-height: none !important;
+	width: auto;
+	padding: 0;
+	}
+
+.leaflet-container.leaflet-touch-zoom {
+	-ms-touch-action: pan-x pan-y;
+	touch-action: pan-x pan-y;
+	}
+.leaflet-container.leaflet-touch-drag {
+	-ms-touch-action: pinch-zoom;
+	/* Fallback for FF which doesn't support pinch-zoom */
+	touch-action: none;
+	touch-action: pinch-zoom;
+}
+.leaflet-container.leaflet-touch-drag.leaflet-touch-zoom {
+	-ms-touch-action: none;
+	touch-action: none;
+}
+.leaflet-container {
+	-webkit-tap-highlight-color: transparent;
+}
+.leaflet-container a {
+	-webkit-tap-highlight-color: rgba(51, 181, 229, 0.4);
+}
+.leaflet-tile {
+	filter: inherit;
+	visibility: hidden;
+	}
+.leaflet-tile-loaded {
+	visibility: inherit;
+	}
+.leaflet-zoom-box {
+	width: 0;
+	height: 0;
+	-moz-box-sizing: border-box;
+	     box-sizing: border-box;
+	z-index: 800;
+	}
+/* workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=888319 */
+.leaflet-overlay-pane svg {
+	-moz-user-select: none;
+	}
+
+.leaflet-pane         { z-index: 400; }
+
+.leaflet-tile-pane    { z-index: 200; }
+.leaflet-overlay-pane { z-index: 400; }
+.leaflet-shadow-pane  { z-index: 500; }
+.leaflet-marker-pane  { z-index: 600; }
+.leaflet-tooltip-pane   { z-index: 650; }
+.leaflet-popup-pane   { z-index: 700; }
+
+.leaflet-map-pane canvas { z-index: 100; }
+.leaflet-map-pane svg    { z-index: 200; }
+
+.leaflet-vml-shape {
+	width: 1px;
+	height: 1px;
+	}
+.lvml {
+	behavior: url(#default#VML);
+	display: inline-block;
+	position: absolute;
+	}
+
+
+/* control positioning */
+
+.leaflet-control {
+	position: relative;
+	z-index: 800;
+	pointer-events: visiblePainted; /* IE 9-10 doesn't have auto */
+	pointer-events: auto;
+	}
+.leaflet-top,
+.leaflet-bottom {
+	position: absolute;
+	z-index: 1000;
+	pointer-events: none;
+	}
+.leaflet-top {
+	top: 0;
+	}
+.leaflet-right {
+	right: 0;
+	}
+.leaflet-bottom {
+	bottom: 0;
+	}
+.leaflet-left {
+	left: 0;
+	}
+.leaflet-control {
+	float: left;
+	clear: both;
+	}
+.leaflet-right .leaflet-control {
+	float: right;
+	}
+.leaflet-top .leaflet-control {
+	margin-top: 10px;
+	}
+.leaflet-bottom .leaflet-control {
+	margin-bottom: 10px;
+	}
+.leaflet-left .leaflet-control {
+	margin-left: 10px;
+	}
+.leaflet-right .leaflet-control {
+	margin-right: 10px;
+	}
+
+
+/* zoom and fade animations */
+
+.leaflet-fade-anim .leaflet-popup {
+	opacity: 0;
+	-webkit-transition: opacity 0.2s linear;
+	   -moz-transition: opacity 0.2s linear;
+	        transition: opacity 0.2s linear;
+	}
+.leaflet-fade-anim .leaflet-map-pane .leaflet-popup {
+	opacity: 1;
+	}
+.leaflet-zoom-animated {
+	-webkit-transform-origin: 0 0;
+	    -ms-transform-origin: 0 0;
+	        transform-origin: 0 0;
+	}
+svg.leaflet-zoom-animated {
+	will-change: transform;
+}
+
+.leaflet-zoom-anim .leaflet-zoom-animated {
+	-webkit-transition: -webkit-transform 0.25s cubic-bezier(0,0,0.25,1);
+	   -moz-transition:    -moz-transform 0.25s cubic-bezier(0,0,0.25,1);
+	        transition:         transform 0.25s cubic-bezier(0,0,0.25,1);
+	}
+.leaflet-zoom-anim .leaflet-tile,
+.leaflet-pan-anim .leaflet-tile {
+	-webkit-transition: none;
+	   -moz-transition: none;
+	        transition: none;
+	}
+
+.leaflet-zoom-anim .leaflet-zoom-hide {
+	visibility: hidden;
+	}
+
+
+/* cursors */
+
+.leaflet-interactive {
+	cursor: pointer;
+	}
+.leaflet-grab {
+	cursor: -webkit-grab;
+	cursor:    -moz-grab;
+	cursor:         grab;
+	}
+.leaflet-crosshair,
+.leaflet-crosshair .leaflet-interactive {
+	cursor: crosshair;
+	}
+.leaflet-popup-pane,
+.leaflet-control {
+	cursor: auto;
+	}
+.leaflet-dragging .leaflet-grab,
+.leaflet-dragging .leaflet-grab .leaflet-interactive,
+.leaflet-dragging .leaflet-marker-draggable {
+	cursor: move;
+	cursor: -webkit-grabbing;
+	cursor:    -moz-grabbing;
+	cursor:         grabbing;
+	}
+
+/* marker & overlays interactivity */
+.leaflet-marker-icon,
+.leaflet-marker-shadow,
+.leaflet-image-layer,
+.leaflet-pane > svg path,
+.leaflet-tile-container {
+	pointer-events: none;
+	}
+
+.leaflet-marker-icon.leaflet-interactive,
+.leaflet-image-layer.leaflet-interactive,
+.leaflet-pane > svg path.leaflet-interactive,
+svg.leaflet-image-layer.leaflet-interactive path {
+	pointer-events: visiblePainted; /* IE 9-10 doesn't have auto */
+	pointer-events: auto;
+	}
+
+/* visual tweaks */
+
+.leaflet-container {
+	background: #ddd;
+	outline-offset: 1px;
+	}
+.leaflet-container a {
+	color: #0078A8;
+	}
+.leaflet-zoom-box {
+	border: 2px dotted #38f;
+	background: rgba(255,255,255,0.5);
+	}
+
+
+/* general typography */
+.leaflet-container {
+	font-family: "Helvetica Neue", Arial, Helvetica, sans-serif;
+	font-size: 12px;
+	font-size: 0.75rem;
+	line-height: 1.5;
+	}
+
+
+/* general toolbar styles */
+
+.leaflet-bar {
+	box-shadow: 0 1px 5px rgba(0,0,0,0.65);
+	border-radius: 4px;
+	}
+.leaflet-bar a {
+	background-color: #fff;
+	border-bottom: 1px solid #ccc;
+	width: 26px;
+	height: 26px;
+	line-height: 26px;
+	display: block;
+	text-align: center;
+	text-decoration: none;
+	color: black;
+	}
+.leaflet-bar a,
+.leaflet-control-layers-toggle {
+	background-position: 50% 50%;
+	background-repeat: no-repeat;
+	display: block;
+	}
+.leaflet-bar a:hover,
+.leaflet-bar a:focus {
+	background-color: #f4f4f4;
+	}
+.leaflet-bar a:first-child {
+	border-top-left-radius: 4px;
+	border-top-right-radius: 4px;
+	}
+.leaflet-bar a:last-child {
+	border-bottom-left-radius: 4px;
+	border-bottom-right-radius: 4px;
+	border-bottom: none;
+	}
+.leaflet-bar a.leaflet-disabled {
+	cursor: default;
+	background-color: #f4f4f4;
+	color: #bbb;
+	}
+
+.leaflet-touch .leaflet-bar a {
+	width: 30px;
+	height: 30px;
+	line-height: 30px;
+	}
+.leaflet-touch .leaflet-bar a:first-child {
+	border-top-left-radius: 2px;
+	border-top-right-radius: 2px;
+	}
+.leaflet-touch .leaflet-bar a:last-child {
+	border-bottom-left-radius: 2px;
+	border-bottom-right-radius: 2px;
+	}
+
+/* zoom control */
+
+.leaflet-control-zoom-in,
+.leaflet-control-zoom-out {
+	font: bold 18px 'Lucida Console', Monaco, monospace;
+	text-indent: 1px;
+	}
+
+.leaflet-touch .leaflet-control-zoom-in, .leaflet-touch .leaflet-control-zoom-out  {
+	font-size: 22px;
+	}
+
+
+/* layers control */
+
+.leaflet-control-layers {
+	box-shadow: 0 1px 5px rgba(0,0,0,0.4);
+	background: #fff;
+	border-radius: 5px;
+	}
+.leaflet-control-layers-toggle {
+	background-image: url(images/layers.png);
+	width: 36px;
+	height: 36px;
+	}
+.leaflet-retina .leaflet-control-layers-toggle {
+	background-image: url(images/layers-2x.png);
+	background-size: 26px 26px;
+	}
+.leaflet-touch .leaflet-control-layers-toggle {
+	width: 44px;
+	height: 44px;
+	}
+.leaflet-control-layers .leaflet-control-layers-list,
+.leaflet-control-layers-expanded .leaflet-control-layers-toggle {
+	display: none;
+	}
+.leaflet-control-layers-expanded .leaflet-control-layers-list {
+	display: block;
+	position: relative;
+	}
+.leaflet-control-layers-expanded {
+	padding: 6px 10px 6px 6px;
+	color: #333;
+	background: #fff;
+	}
+.leaflet-control-layers-scrollbar {
+	overflow-y: scroll;
+	overflow-x: hidden;
+	padding-right: 5px;
+	}
+.leaflet-control-layers-selector {
+	margin-top: 2px;
+	position: relative;
+	top: 1px;
+	}
+.leaflet-control-layers label {
+	display: block;
+	font-size: 13px;
+	font-size: 1.08333em;
+	}
+.leaflet-control-layers-separator {
+	height: 0;
+	border-top: 1px solid #ddd;
+	margin: 5px -10px 5px -6px;
+	}
+
+/* Default icon URLs */
+.leaflet-default-icon-path { /* used only in path-guessing heuristic, see L.Icon.Default */
+	background-image: url(images/marker-icon.png);
+	}
+
+
+/* attribution and scale controls */
+
+.leaflet-container .leaflet-control-attribution {
+	background: #fff;
+	background: rgba(255, 255, 255, 0.8);
+	margin: 0;
+	}
+.leaflet-control-attribution,
+.leaflet-control-scale-line {
+	padding: 0 5px;
+	color: #333;
+	line-height: 1.4;
+	}
+.leaflet-control-attribution a {
+	text-decoration: none;
+	}
+.leaflet-control-attribution a:hover,
+.leaflet-control-attribution a:focus {
+	text-decoration: underline;
+	}
+.leaflet-attribution-flag {
+	display: inline !important;
+	vertical-align: baseline !important;
+	width: 1em;
+	height: 0.6669em;
+	}
+.leaflet-left .leaflet-control-scale {
+	margin-left: 5px;
+	}
+.leaflet-bottom .leaflet-control-scale {
+	margin-bottom: 5px;
+	}
+.leaflet-control-scale-line {
+	border: 2px solid #777;
+	border-top: none;
+	line-height: 1.1;
+	padding: 2px 5px 1px;
+	white-space: nowrap;
+	-moz-box-sizing: border-box;
+	     box-sizing: border-box;
+	background: rgba(255, 255, 255, 0.8);
+	text-shadow: 1px 1px #fff;
+	}
+.leaflet-control-scale-line:not(:first-child) {
+	border-top: 2px solid #777;
+	border-bottom: none;
+	margin-top: -2px;
+	}
+.leaflet-control-scale-line:not(:first-child):not(:last-child) {
+	border-bottom: 2px solid #777;
+	}
+
+.leaflet-touch .leaflet-control-attribution,
+.leaflet-touch .leaflet-control-layers,
+.leaflet-touch .leaflet-bar {
+	box-shadow: none;
+	}
+.leaflet-touch .leaflet-control-layers,
+.leaflet-touch .leaflet-bar {
+	border: 2px solid rgba(0,0,0,0.2);
+	background-clip: padding-box;
+	}
+
+
+/* popup */
+
+.leaflet-popup {
+	position: absolute;
+	text-align: center;
+	margin-bottom: 20px;
+	}
+.leaflet-popup-content-wrapper {
+	padding: 1px;
+	text-align: left;
+	border-radius: 12px;
+	}
+.leaflet-popup-content {
+	margin: 13px 24px 13px 20px;
+	line-height: 1.3;
+	font-size: 13px;
+	font-size: 1.08333em;
+	min-height: 1px;
+	}
+.leaflet-popup-content p {
+	margin: 17px 0;
+	margin: 1.3em 0;
+	}
+.leaflet-popup-tip-container {
+	width: 40px;
+	height: 20px;
+	position: absolute;
+	left: 50%;
+	margin-top: -1px;
+	margin-left: -20px;
+	overflow: hidden;
+	pointer-events: none;
+	}
+.leaflet-popup-tip {
+	width: 17px;
+	height: 17px;
+	padding: 1px;
+
+	margin: -10px auto 0;
+	pointer-events: auto;
+
+	-webkit-transform: rotate(45deg);
+	   -moz-transform: rotate(45deg);
+	    -ms-transform: rotate(45deg);
+	        transform: rotate(45deg);
+	}
+.leaflet-popup-content-wrapper,
+.leaflet-popup-tip {
+	background: white;
+	color: #333;
+	box-shadow: 0 3px 14px rgba(0,0,0,0.4);
+	}
+.leaflet-container a.leaflet-popup-close-button {
+	position: absolute;
+	top: 0;
+	right: 0;
+	border: none;
+	text-align: center;
+	width: 24px;
+	height: 24px;
+	font: 16px/24px Tahoma, Verdana, sans-serif;
+	color: #757575;
+	text-decoration: none;
+	background: transparent;
+	}
+.leaflet-container a.leaflet-popup-close-button:hover,
+.leaflet-container a.leaflet-popup-close-button:focus {
+	color: #585858;
+	}
+.leaflet-popup-scrolled {
+	overflow: auto;
+	}
+
+.leaflet-oldie .leaflet-popup-content-wrapper {
+	-ms-zoom: 1;
+	}
+.leaflet-oldie .leaflet-popup-tip {
+	width: 24px;
+	margin: 0 auto;
+
+	-ms-filter: "progid:DXImageTransform.Microsoft.Matrix(M11=0.70710678, M12=0.70710678, M21=-0.70710678, M22=0.70710678)";
+	filter: progid:DXImageTransform.Microsoft.Matrix(M11=0.70710678, M12=0.70710678, M21=-0.70710678, M22=0.70710678);
+	}
+
+.leaflet-oldie .leaflet-control-zoom,
+.leaflet-oldie .leaflet-control-layers,
+.leaflet-oldie .leaflet-popup-content-wrapper,
+.leaflet-oldie .leaflet-popup-tip {
+	border: 1px solid #999;
+	}
+
+
+/* div icon */
+
+.leaflet-div-icon {
+	background: #fff;
+	border: 1px solid #666;
+	}
+
+
+/* Tooltip */
+/* Base styles for the element that has a tooltip */
+.leaflet-tooltip {
+	position: absolute;
+	padding: 6px;
+	background-color: #fff;
+	border: 1px solid #fff;
+	border-radius: 3px;
+	color: #222;
+	white-space: nowrap;
+	-webkit-user-select: none;
+	-moz-user-select: none;
+	-ms-user-select: none;
+	user-select: none;
+	pointer-events: none;
+	box-shadow: 0 1px 3px rgba(0,0,0,0.4);
+	}
+.leaflet-tooltip.leaflet-interactive {
+	cursor: pointer;
+	pointer-events: auto;
+	}
+.leaflet-tooltip-top:before,
+.leaflet-tooltip-bottom:before,
+.leaflet-tooltip-left:before,
+.leaflet-tooltip-right:before {
+	position: absolute;
+	pointer-events: none;
+	border: 6px solid transparent;
+	background: transparent;
+	content: "";
+	}
+
+/* Directions */
+
+.leaflet-tooltip-bottom {
+	margin-top: 6px;
+}
+.leaflet-tooltip-top {
+	margin-top: -6px;
+}
+.leaflet-tooltip-bottom:before,
+.leaflet-tooltip-top:before {
+	left: 50%;
+	margin-left: -6px;
+	}
+.leaflet-tooltip-top:before {
+	bottom: 0;
+	margin-bottom: -12px;
+	border-top-color: #fff;
+	}
+.leaflet-tooltip-bottom:before {
+	top: 0;
+	margin-top: -12px;
+	margin-left: -6px;
+	border-bottom-color: #fff;
+	}
+.leaflet-tooltip-left {
+	margin-left: -6px;
+}
+.leaflet-tooltip-right {
+	margin-left: 6px;
+}
+.leaflet-tooltip-left:before,
+.leaflet-tooltip-right:before {
+	top: 50%;
+	margin-top: -6px;
+	}
+.leaflet-tooltip-left:before {
+	right: 0;
+	margin-right: -12px;
+	border-left-color: #fff;
+	}
+.leaflet-tooltip-right:before {
+	left: 0;
+	margin-left: -12px;
+	border-right-color: #fff;
+	}
+
+/* Printing */
+	
+@media print {
+	/* Prevent printers from removing background-images of controls. */
+	.leaflet-control {
+		-webkit-print-color-adjust: exact;
+		print-color-adjust: exact;
+		}
+	}

public/resources/mapbox-gl-inspect.css

@@ -1,40 +0,0 @@
-.mapbox-gl-inspect_popup {
-  color: #333;
-  display: table;
-}
-
-.mapbox-gl-inspect_feature:not(:last-child) {
-  border-bottom: 1px solid #ccc;
-}
-
-.mapbox-gl-inspect_layer:before {
-  content: '#';
-}
-
-.mapbox-gl-inspect_layer {
-  display: block;
-  font-weight: bold;
-}
-
-.mapbox-gl-inspect_property {
-  display: table-row;
-}
-
-.mapbox-gl-inspect_property-value {
-  display: table-cell;
-
-}
-
-.mapbox-gl-inspect_property-name {
-  display: table-cell;
-  padding-right: 10px;
-}
-
-.mapboxgl-ctrl-inspect {
-  background-image: url('data:image/svg+xml;charset=utf8,<svg%20xmlns="http://www.w3.org/2000/svg"%20fill="#333333%22%20preserveAspectRatio=%22xMidYMid%20meet%22%20viewBox=%22-10%20-10%2060%2060%22%3E%3Cg%3E%3Cpath%20d=%22m15%2021.6q0-2%201.5-3.5t3.5-1.5%203.5%201.5%201.5%203.5-1.5%203.6-3.5%201.4-3.5-1.4-1.5-3.6z%20m18.4%2011.1l-6.4-6.5q1.4-2.1%201.4-4.6%200-3.4-2.5-5.8t-5.9-2.4-5.9%202.4-2.5%205.8%202.5%205.9%205.9%202.5q2.4%200%204.6-1.4l7.4%207.4q-0.9%200.6-2%200.6h-20q-1.3%200-2.3-0.9t-1.1-2.3l0.1-26.8q0-1.3%201-2.3t2.3-0.9h13.4l10%2010v19.3z%22%3E%3C/path%3E%3C/g%3E%3C/svg%3E');
-}
-
-.mapboxgl-ctrl-map {
-  background-image: url('data:image/svg+xml;charset=utf8,<svg%20xmlns="http://www.w3.org/2000/svg"%20fill="#333333%22%20viewBox=%22-10%20-10%2060%2060%22%20preserveAspectRatio=%22xMidYMid%20meet%22%3E%3Cg%3E%3Cpath%20d=%22m25%2031.640000000000004v-19.766666666666673l-10-3.511666666666663v19.766666666666666z%20m9.140000000000008-26.640000000000004q0.8599999999999923%200%200.8599999999999923%200.8600000000000003v25.156666666666666q0%200.625-0.625%200.783333333333335l-9.375%203.1999999999999993-10-3.5133333333333354-8.906666666666668%203.4383333333333326-0.2333333333333334%200.07833333333333314q-0.8616666666666664%200-0.8616666666666664-0.8599999999999994v-25.156666666666663q0-0.625%200.6233333333333331-0.7833333333333332l9.378333333333334-3.198333333333334%2010%203.5133333333333336%208.905000000000001-3.4383333333333344z%22%3E%3C/path%3E%3C/g%3E%3C/svg%3E');
-}
-

public/resources/maplibre-gl-inspect.css

@@ -0,0 +1,40 @@
+.maplibregl-inspect_popup {
+  color: #333;
+  display: table;
+}
+
+.maplibregl-inspect_feature:not(:last-child) {
+  border-bottom: 1px solid #ccc;
+}
+
+.maplibregl-inspect_layer:before {
+  content: '#';
+}
+
+.maplibregl-inspect_layer {
+  display: block;
+  font-weight: bold;
+}
+
+.maplibregl-inspect_property {
+  display: table-row;
+}
+
+.maplibregl-inspect_property-value {
+  display: table-cell;
+  word-break: break-all;
+}
+
+.maplibregl-inspect_property-name {
+  display: table-cell;
+  padding-right: 10px;
+  word-break: break-all;
+}
+
+.maplibregl-ctrl-inspect {
+  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23333333' preserveAspectRatio='xMidYMid meet' viewBox='-10 -10 60 60'%3E%3Cg%3E%3Cpath d='m15 21.6q0-2 1.5-3.5t3.5-1.5 3.5 1.5 1.5 3.5-1.5 3.6-3.5 1.4-3.5-1.4-1.5-3.6z m18.4 11.1l-6.4-6.5q1.4-2.1 1.4-4.6 0-3.4-2.5-5.8t-5.9-2.4-5.9 2.4-2.5 5.8 2.5 5.9 5.9 2.5q2.4 0 4.6-1.4l7.4 7.4q-0.9 0.6-2 0.6h-20q-1.3 0-2.3-0.9t-1.1-2.3l0.1-26.8q0-1.3 1-2.3t2.3-0.9h13.4l10 10v19.3z'%3E%3C/path%3E%3C/g%3E%3C/svg%3E");
+}
+
+.maplibregl-ctrl-map {
+  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23333333' viewBox='-10 -10 60 60' preserveAspectRatio='xMidYMid meet'%3E%3Cg%3E%3Cpath d='m25 31.640000000000004v-19.766666666666673l-10-3.511666666666663v19.766666666666666z m9.140000000000008-26.640000000000004q0.8599999999999923 0 0.8599999999999923 0.8600000000000003v25.156666666666666q0 0.625-0.625 0.783333333333335l-9.375 3.1999999999999993-10-3.5133333333333354-8.906666666666668 3.4383333333333326-0.2333333333333334 0.07833333333333314q-0.8616666666666664 0-0.8616666666666664-0.8599999999999994v-25.156666666666663q0-0.625 0.6233333333333331-0.7833333333333332l9.378333333333334-3.198333333333334 10 3.5133333333333336 8.905000000000001-3.4383333333333344z'%3E%3C/path%3E%3C/g%3E%3C/svg%3E");
+}

public/templates/data.tmpl

@@ -5,10 +5,10 @@
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>{{name}} - TileServer GL</title>
   {{#is_vector}}
-  <link rel="stylesheet" type="text/css" href="{{public_url}}mapbox-gl.css{{&key_query}}" />
-  <link rel="stylesheet" type="text/css" href="{{public_url}}mapbox-gl-inspect.css{{&key_query}}" />
-  <script src="{{public_url}}mapbox-gl.js{{&key_query}}"></script>
-  <script src="{{public_url}}mapbox-gl-inspect.min.js{{&key_query}}"></script>
+  <link rel="stylesheet" type="text/css" href="{{public_url}}maplibre-gl.css{{&key_query}}" />
+  <link rel="stylesheet" type="text/css" href="{{public_url}}maplibre-gl-inspect.css{{&key_query}}" />
+  <script src="{{public_url}}maplibre-gl.js{{&key_query}}"></script>
+  <script src="{{public_url}}maplibre-gl-inspect.min.js{{&key_query}}"></script>
   <style>
     body {background:#fff;color:#333;font-family:Arial, sans-serif;}
     #map {position:absolute;top:0;left:0;right:250px;bottom:0;}
@@ -18,12 +18,25 @@
   </style>
   {{/is_vector}}
   {{^is_vector}}
-  <link rel="stylesheet" type="text/css" href="{{public_url}}mapbox.css{{&key_query}}" />
-  <script src="{{public_url}}mapbox.js{{&key_query}}"></script>
+  <link rel="stylesheet" type="text/css" href="{{public_url}}leaflet.css{{&key_query}}" />
+  <script src="{{public_url}}leaflet.js{{&key_query}}"></script>
   <script src="{{public_url}}leaflet-hash.js{{&key_query}}"></script>
+  <script src="{{public_url}}L.TileLayer.NoGap.js{{&key_query}}"></script>
   <style>
     body { margin:0; padding:0; }
     #map { position:absolute; top:0; bottom:0; width:100%; }
+    .leaflet-control-layers-toggle {
+      background-image: url({{public_url}}images/layers.png{{&key_query}});
+      width: 36px;
+      height: 36px;
+    }
+    .leaflet-retina .leaflet-control-layers-toggle {
+      background-image: url({{public_url}}images/layers-2x.png{{&key_query}});
+      background-size: 26px 26px;
+    }
+    .leaflet-default-icon-path { /* used only in path-guessing heuristic, see L.Icon.Default */
+      background-image: url({{public_url}}images/marker-icon.png{{&key_query}});
+    }
   </style>
   {{/is_vector}}
 </head>
@@ -34,22 +47,27 @@
   <div id="layerList"></div>
   <pre id="propertyList"></pre>
   <script>
-  var map = new mapboxgl.Map({
+  var keyMatch = location.search.match(/[\?\&]key=([^&]+)/i);
+  var keyParam = keyMatch ? '?key=' + keyMatch[1] : '';
+    
+  var map = new maplibregl.Map({
     container: 'map',
     hash: true,
+    maplibreLogo: true,
+    maxPitch: 85,
     style: {
       version: 8,
       sources: {
         'vector_layer_': {
           type: 'vector',
-          url: '{{public_url}}data/{{id}}.json{{&key_query}}'
+          url: '{{public_url}}data/{{id}}.json' + keyParam
         }
       },
       layers: []
     }
   });
-  map.addControl(new mapboxgl.NavigationControl());
-  var inspect = new MapboxInspect({
+  map.addControl(new maplibregl.NavigationControl());
+  var inspect = new MaplibreInspect({
     showInspectMap: true,
     showInspectButton: false
   });
@@ -74,12 +92,52 @@
   <h1 style="display:none;">{{name}}</h1>
   <div id='map'></div>
   <script>
-    var map = L.mapbox.map('map', '{{public_url}}data/{{id}}.json{{&key_query}}', { zoomControl: false });
+  var keyMatch = location.search.match(/[\?\&]key=([^&]+)/i);
+  var keyParam = keyMatch ? '?key=' + keyMatch[1] : '';    
+    
+    var map = L.map('map', { zoomControl: false });
+    new L.Control.Zoom({ position: 'topright' }).addTo(map);
+
+    var tile_urls = [], tile_attribution, tile_minzoom, tile_maxzoom;
+    var url = '{{public_url}}data/{{id}}.json' + keyParam;
+    var req = new XMLHttpRequest();
+    req.overrideMimeType("application/json");
+    req.open('GET', url, true);
+    req.onload = function() {
+        var jsonResponse = JSON.parse(req.responseText);
+        for (key in jsonResponse) {
+          var keyl = key.toLowerCase();
+            switch(keyl) {
+              case "tiles":
+                tile_urls = jsonResponse[key];
+                break;
+              case "attribution":
+                tile_attribution = jsonResponse[key];
+                break;
+              case "minzoom":
+                tile_minzoom = jsonResponse[key];
+                break;
+              case "maxzoom":
+                tile_maxzoom = jsonResponse[key];
+                break;
+            }
+        }
+
+        for (tile_url in tile_urls) {
+            L.tileLayer(tile_urls[tile_url], {
+                minZoom: tile_minzoom,
+                maxZoom: tile_maxzoom,
+                attribution: tile_attribution
+            }).addTo(map);
+        }
+        
         map.eachLayer(function(layer) {
           // do not add scale prefix even if retina display is detected
           layer.scalePrefix = '.';
         });
-    new L.Control.Zoom({ position: 'topright' }).addTo(map);
+    };
+    req.send(null);
+
     setTimeout(function() {
       new L.Hash(map);
     }, 0);

public/templates/index.tmpl

@@ -17,7 +17,7 @@
 </head>
 <body>
   <section>
-    <h1 class="title {{#if is_light}}light{{/if}}"><img src="{{public_url}}images/logo.png" alt="TileServer GL" /></h1>
+    <h1 class="title {{#if is_light}}light{{/if}}"><img src="{{public_url}}images/logo.png{{&key_query}}" alt="TileServer GL" /></h1>
     <h2 class="subtitle">Vector {{#if is_light}}<s>and raster</s>{{else}}and raster{{/if}} maps with GL styles</h2>
     {{#if styles}}
       <h2 class="box-header">Styles</h2>
@@ -27,7 +27,7 @@
           {{#if thumbnail}}
             <img src="{{public_url}}styles/{{@key}}/{{thumbnail}}{{&../key_query}}" alt="{{name}} preview" />
           {{else}}
-            <img src="{{public_url}}images/placeholder.png" alt="{{name}} preview" />
+            <img src="{{public_url}}images/placeholder.png{{&key_query}}" alt="{{name}} preview" />
           {{/if}}
           <div class="details">
             <h3>{{name}}</h3>
@@ -41,7 +41,7 @@
                 {{#if serving_data}}| {{/if}}<a href="{{public_url}}styles/{{@key}}.json{{&../key_query}}">TileJSON</a>
               {{/if}}
               {{#if serving_rendered}}
-                | <a href="/styles/{{@key}}/wmts.xml{{&../key_query}}">WMTS</a>
+                | <a href="{{public_url}}styles/{{@key}}/wmts.xml{{&../key_query}}">WMTS</a>
               {{/if}}
               {{#if xyz_link}}
                 | <a href="#" onclick="return toggle_xyz('xyz_style_{{@key}}');">XYZ</a>
@@ -74,7 +74,7 @@
           {{#if thumbnail}}
             <img src="{{public_url}}data/{{@key}}/{{thumbnail}}{{&../key_query}}" alt="{{name}} preview" />
           {{else}}
-            <img src="{{public_url}}images/placeholder.png" alt="{{name}} preview" />
+            <img src="{{public_url}}images/placeholder.png{{&key_query}}" alt="{{name}} preview" />
           {{/if}}
           <div class="details">
             <h3>{{name}}</h3>
@@ -104,7 +104,7 @@
     {{/if}}
   </section>
   <footer>
-    <a href="https://www.maptiler.com/" target="_blank"><img src="{{public_url}}images/maptiler-logo.svg" /></a>
+    <a href="https://www.maptiler.com/" target="_blank"><img src="{{public_url}}images/maptiler-logo.svg{{&key_query}}" /></a>
     <p>
       <a href="https://github.com/maptiler/tileserver-gl" target="_blank">Powered by TileServer GL ({{server_version}})</a> – <a href="https://www.maptiler.com/" target="_blank">an open-source project from MapTiler.</a>
     </p>

public/templates/viewer.tmpl

@@ -4,36 +4,123 @@
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>{{name}} - TileServer GL</title>
-  <link rel="stylesheet" type="text/css" href="{{public_url}}mapbox-gl.css{{&key_query}}" />
-  <script src="{{public_url}}mapbox-gl.js{{&key_query}}"></script>
-  <link rel="stylesheet" type="text/css" href="{{public_url}}mapbox.css{{&key_query}}" />
-  <script src="{{public_url}}mapbox.js{{&key_query}}"></script>
+  <link rel="stylesheet" type="text/css" href="{{public_url}}maplibre-gl.css{{&key_query}}" />
+  <link rel="stylesheet" type="text/css" href="{{public_url}}maplibre-gl-inspect.css{{&key_query}}" />
+  <link rel="stylesheet" type="text/css" href="{{public_url}}leaflet.css{{&key_query}}" />
+  <script src="{{public_url}}maplibre-gl.js{{&key_query}}"></script>
+  <script src="{{public_url}}maplibre-gl-inspect.min.js{{&key_query}}"></script>
+  <script src="{{public_url}}leaflet.js{{&key_query}}"></script>
   <script src="{{public_url}}leaflet-hash.js{{&key_query}}"></script>
+  <script src="{{public_url}}L.TileLayer.NoGap.js{{&key_query}}"></script>
   <style>
     body { margin:0; padding:0; }
     #map { position:absolute; top:0; bottom:0; width:100%; }
+    .leaflet-control-layers-toggle {
+      background-image: url({{public_url}}images/layers.png{{&key_query}});
+      width: 36px;
+      height: 36px;
+    }
+    .leaflet-retina .leaflet-control-layers-toggle {
+      background-image: url({{public_url}}images/layers-2x.png{{&key_query}});
+      background-size: 26px 26px;
+    }
+    .leaflet-default-icon-path { /* used only in path-guessing heuristic, see L.Icon.Default */
+      background-image: url({{public_url}}images/marker-icon.png{{&key_query}});
+    }
   </style>
 </head>
 <body>
   <h1 style="display:none;">{{name}}</h1>
   <div id='map'></div>
   <script>
+    function isWebglSupported() {
+        if (window.WebGLRenderingContext) {
+            const canvas = document.createElement('canvas');
+            try {
+                const context = canvas.getContext('webgl2') || canvas.getContext('webgl');
+                if (context && typeof context.getParameter == 'function') {
+                    return true;
+                }
+            } catch (e) {
+                // WebGL is supported, but disabled
+            }
+            return false;
+        }
+        // WebGL not supported
+        return false;
+    }
     var q = (location.search || '').substr(1).split('&');
     var preference =
       q.indexOf('vector') >= 0 ? 'vector' :
         (q.indexOf('raster') >= 0 ? 'raster' :
-          (mapboxgl.supported() ? 'vector' : 'raster'));
+          (isWebglSupported() ? 'vector' : 'raster'));
+
+    var keyMatch = location.search.match(/[\?\&]key=([^&]+)/i);
+    var keyParam = keyMatch ? '?key=' + keyMatch[1] : '';    
+
     if (preference == 'vector') {
-      mapboxgl.setRTLTextPlugin('{{public_url}}mapbox-gl-rtl-text.js{{&key_query}}');
-      var map = new mapboxgl.Map({
+      maplibregl.setRTLTextPlugin('{{public_url}}mapbox-gl-rtl-text.js' + keyParam);
+      var map = new maplibregl.Map({
         container: 'map',
-        style: '{{public_url}}styles/{{id}}/style.json{{&key_query}}',
-        hash: true
+        style: '{{public_url}}styles/{{id}}/style.json' + keyParam,
+        hash: true,
+        maplibreLogo: true,
+        maxPitch: 85
       });
-      map.addControl(new mapboxgl.NavigationControl());
+      map.addControl(new maplibregl.NavigationControl({
+         visualizePitch: true,
+         showZoom: true,
+         showCompass: true
+      }));
+      map.addControl(new MaplibreInspect({
+         showMapPopupOnHover: false,
+         showInspectMapPopupOnHover: false,
+         selectThreshold: 5
+      }));
     } else {
-      var map = L.mapbox.map('map', '{{public_url}}styles/{{id}}.json{{&key_query}}', { zoomControl: false });
+        var map = L.map('map', { zoomControl: false });
         new L.Control.Zoom({ position: 'topright' }).addTo(map);
+        
+        var tile_urls = [], tile_attribution, tile_minzoom, tile_maxzoom;
+        var url = '{{public_url}}styles/{{id}}.json' + keyParam;
+        var req = new XMLHttpRequest();
+        req.overrideMimeType("application/json");
+        req.open('GET', url, true);
+        req.onload = function() {
+            var jsonResponse = JSON.parse(req.responseText);
+            for (key in jsonResponse) {
+              var keyl = key.toLowerCase();
+                switch(keyl) {
+                  case "tiles":
+                    tile_urls = jsonResponse[key];
+                    break;
+                  case "attribution":
+                    tile_attribution = jsonResponse[key];
+                    break;
+                  case "minzoom":
+                    tile_minzoom = jsonResponse[key];
+                    break;
+                  case "maxzoom":
+                    tile_maxzoom = jsonResponse[key];
+                    break;
+                }
+            }
+
+            for (tile_url in tile_urls) {
+                L.tileLayer(tile_urls[tile_url], {
+                    minZoom: tile_minzoom,
+                    maxZoom: tile_maxzoom,
+                    attribution: tile_attribution
+                }).addTo(map);
+            }
+        
+            map.eachLayer(function(layer) {
+              // do not add scale prefix even if retina display is detected
+              layer.scalePrefix = '.';
+            });
+        };
+        req.send(null);
+      
         setTimeout(function() {
             new L.Hash(map);
         }, 0);

public/templates/wmts.tmpl

@@ -11,7 +11,7 @@
     <ows:Operation name="GetCapabilities">
       <ows:DCP>
         <ows:HTTP>
-          <ows:Get xlink:href="{{baseUrl}}/wmts/{{id}}/">
+          <ows:Get xlink:href="{{baseUrl}}wmts/{{id}}/">
             <ows:Constraint name="GetEncoding">
               <ows:AllowedValues>
                 <ows:Value>RESTful</ows:Value>
@@ -24,7 +24,7 @@
     <ows:Operation name="GetTile">
       <ows:DCP>
         <ows:HTTP>
-          <ows:Get xlink:href="{{baseUrl}}/styles/">
+          <ows:Get xlink:href="{{baseUrl}}styles/">
             <ows:Constraint name="GetEncoding">
               <ows:AllowedValues>
                 <ows:Value>RESTful</ows:Value>
@@ -50,7 +50,7 @@
       <TileMatrixSetLink>
         <TileMatrixSet>GoogleMapsCompatible</TileMatrixSet>
       </TileMatrixSetLink>
-      <ResourceURL format="image/png" resourceType="tile" template="{{baseUrl}}/styles/{{id}}/{TileMatrix}/{TileCol}/{TileRow}.png{{key_query}}"/>
+      <ResourceURL format="image/png" resourceType="tile" template="{{baseUrl}}styles/{{id}}/{TileMatrix}/{TileCol}/{TileRow}.png{{key_query}}"/>
     </Layer><TileMatrixSet>
       <ows:Title>GoogleMapsCompatible</ows:Title>
       <ows:Abstract>GoogleMapsCompatible EPSG:3857</ows:Abstract>
@@ -403,5 +403,5 @@
         <MatrixHeight>262144</MatrixHeight>
       </TileMatrix></TileMatrixSet>
   </Contents>
-  <ServiceMetadataURL xlink:href="{{baseUrl}}/wmts/{{id}}/"/>
+  <ServiceMetadataURL xlink:href="{{baseUrl}}wmts/{{id}}/"/>
 </Capabilities>

publish.js

@@ -11,43 +11,58 @@
 /* CREATE tileserver-gl-light */
 
 // SYNC THE `light` FOLDER
-require('child_process').execSync('rsync -av --exclude="light" --exclude=".git" --exclude="node_modules" --delete . light', {
-  stdio: 'inherit'
-});
+
+import child_process from 'child_process';
+child_process.execSync(
+  'rsync -av --exclude="light" --exclude=".git" --exclude="node_modules" --delete . light',
+  {
+    stdio: 'inherit',
+  },
+);
 
 // PATCH `package.json`
-var fs = require('fs');
-var packageJson = require('./package');
+import fs from 'fs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const packageJson = JSON.parse(
+  fs.readFileSync(__dirname + '/package.json', 'utf8'),
+);
 
 packageJson.name += '-light';
-packageJson.description = 'Map tile server for JSON GL styles - serving vector tiles';
+packageJson.description =
+  'Map tile server for JSON GL styles - serving vector tiles';
 delete packageJson.dependencies['canvas'];
-delete packageJson.dependencies['@mapbox/mapbox-gl-native'];
+delete packageJson.dependencies['@maplibre/maplibre-gl-native'];
 delete packageJson.dependencies['sharp'];
 
+delete packageJson.scripts['prepare'];
+
 delete packageJson.optionalDependencies;
 delete packageJson.devDependencies;
 
-packageJson.engines.node = '>= 10';
+packageJson.engines.node = '>= 14.15.0';
 
-var str = JSON.stringify(packageJson, undefined, 2);
+const str = JSON.stringify(packageJson, undefined, 2);
 fs.writeFileSync('light/package.json', str);
 fs.renameSync('light/README_light.md', 'light/README.md');
 fs.renameSync('light/Dockerfile_light', 'light/Dockerfile');
+fs.renameSync('light/docker-entrypoint_light.sh', 'light/docker-entrypoint.sh');
 
 // for Build tileserver-gl-light docker image, don't publish
-if (process.argv.length > 2 && process.argv[2] == "--no-publish") {
-  process.exit(0)
+if (process.argv.length > 2 && process.argv[2] == '--no-publish') {
+  process.exit(0);
 }
 
 /* PUBLISH */
 
 // tileserver-gl
-require('child_process').execSync('npm publish .', {
-  stdio: 'inherit'
+child_process.execSync('npm publish . --access public', {
+  stdio: 'inherit',
 });
 
 // tileserver-gl-light
-require('child_process').execSync('npm publish light', {
-  stdio: 'inherit'
+child_process.execSync('npm publish ./light --access public', {
+  stdio: 'inherit',
 });

run.sh

@@ -1,37 +0,0 @@
-#!/bin/bash
-
-_term() {
-	echo "Caught signal, stopping gracefully"
-	kill -TERM "$child" 2>/dev/null
-}
-
-trap _term SIGTERM
-trap _term SIGINT
-
-xvfbMaxStartWaitTime=60
-displayNumber=99
-screenNumber=0
-
-# Delete files if they were not cleaned by last run
-rm -rf /tmp/.X11-unix /tmp/.X${displayNumber}-lock ~/xvfb.pid
-
-echo "Starting Xvfb on display ${displayNumber}"
-start-stop-daemon --start --pidfile ~/xvfb.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :${displayNumber} -screen ${screenNumber} 1024x768x24  -ac +extension GLX +render -noreset
-
-# Wait to be able to connect to the port. This will exit if it cannot in 1 minute.
-timeout ${xvfbMaxStartWaitTime} bash -c "while  ! xdpyinfo -display :${displayNumber} >/dev/null; do sleep 0.5; done"
-if [ $? -ne 0 ]; then
-  echo "Could not connect to display ${displayNumber} in ${xvfbMaxStartWaitTime} seconds time."
-  exit 1
-fi
-
-export DISPLAY=:${displayNumber}.${screenNumber}
-
-echo
-cd /data
-node /usr/src/app/ -p 80 "$@" &
-child=$!
-wait "$child"
-
-start-stop-daemon --stop --retry 5 --pidfile ~/xvfb.pid # stop xvfb when exiting
-rm ~/xvfb.pid

src/healthcheck.js

@@ -0,0 +1,18 @@
+import * as http from 'http';
+var options = {
+  timeout: 2000,
+};
+var url = 'http://localhost:8080/health';
+var request = http.request(url, options, (res) => {
+  console.log(`STATUS: ${res.statusCode}`);
+  if (res.statusCode == 200) {
+    process.exit(0);
+  } else {
+    process.exit(1);
+  }
+});
+request.on('error', function (err) {
+  console.log('ERROR');
+  process.exit(1);
+});
+request.end();

src/main.js

@@ -2,73 +2,56 @@
 
 'use strict';
 
-require = require('esm')(module);
+import fs from 'node:fs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+import request from 'request';
+import { server } from './server.js';
 
-const fs = require('fs');
-const path = require('path');
-const request = require('request');
+import MBTiles from '@mapbox/mbtiles';
 
-const MBTiles = require('@mapbox/mbtiles');
-
-const packageJson = require('../package');
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const packageJson = JSON.parse(
+  fs.readFileSync(__dirname + '/../package.json', 'utf8'),
+);
 
 const args = process.argv;
 if (args.length >= 3 && args[2][0] !== '-') {
   args.splice(2, 0, '--mbtiles');
 }
 
-const opts = require('commander')
+import { program } from 'commander';
+program
   .description('tileserver-gl startup options')
   .usage('tileserver-gl [mbtiles] [options]')
   .option(
     '--mbtiles <file>',
     'MBTiles file (uses demo configuration);\n' +
-    '\t                  ignored if the configuration file is also specified'
+      '\t                  ignored if the configuration file is also specified',
   )
   .option(
     '-c, --config <file>',
     'Configuration file [config.json]',
-    'config.json'
-  )
-  .option(
-    '-b, --bind <address>',
-    'Bind address'
-  )
-  .option(
-    '-p, --port <port>',
-    'Port [8080]',
-    8080,
-    parseInt
-  )
-  .option(
-    '-C|--no-cors',
-    'Disable Cross-origin resource sharing headers'
+    'config.json',
   )
+  .option('-b, --bind <address>', 'Bind address')
+  .option('-p, --port <port>', 'Port [8080]', 8080, parseInt)
+  .option('-C|--no-cors', 'Disable Cross-origin resource sharing headers')
   .option(
     '-u|--public_url <url>',
-    'Enable exposing the server on subpaths, not necessarily the root of the domain'
-  )
-  .option(
-    '-V, --verbose',
-    'More verbose output'
-  )
-  .option(
-    '-s, --silent',
-    'Less verbose output'
-  )
-  .option(
-    '-l|--log_file <file>',
-    'output log file (defaults to standard out)'
+    'Enable exposing the server on subpaths, not necessarily the root of the domain',
   )
+  .option('-V, --verbose', 'More verbose output')
+  .option('-s, --silent', 'Less verbose output')
+  .option('-l|--log_file <file>', 'output log file (defaults to standard out)')
   .option(
     '-f|--log_format <format>',
-    'define the log format:  https://github.com/expressjs/morgan#morganformat-options'
+    'define the log format:  https://github.com/expressjs/morgan#morganformat-options',
   )
-  .version(
-    packageJson.version,
-    '-v, --version'
-  )
-  .parse(args);
+  .version(packageJson.version, '-v, --version');
+program.parse(process.argv);
+const opts = program.opts();
 
 console.log(`Starting ${packageJson.name} v${packageJson.version}`);
 
@@ -77,7 +60,7 @@ const startServer = (configPath, config) => {
   if (publicUrl && publicUrl.lastIndexOf('/') !== publicUrl.length - 1) {
     publicUrl += '/';
   }
-  return require('./server')({
+  return server({
     configPath: configPath,
     config: config,
     bind: opts.bind,
@@ -87,14 +70,16 @@ const startServer = (configPath, config) => {
     silent: opts.silent,
     logFile: opts.log_file,
     logFormat: opts.log_format,
-    publicUrl: publicUrl
+    publicUrl: publicUrl,
   });
 };
 
 const startWithMBTiles = (mbtilesFile) => {
   console.log(`[INFO] Automatically creating config file for ${mbtilesFile}`);
   console.log(`[INFO] Only a basic preview style will be used.`);
-  console.log(`[INFO] See documentation to learn how to create config.json file.`);
+  console.log(
+    `[INFO] See documentation to learn how to create config.json file.`,
+  );
 
   mbtilesFile = path.resolve(process.cwd(), mbtilesFile);
 
@@ -103,7 +88,7 @@ const startWithMBTiles = (mbtilesFile) => {
     console.log(`ERROR: Not valid MBTiles file: ${mbtilesFile}`);
     process.exit(1);
   }
-  const instance = new MBTiles(mbtilesFile, (err) => {
+  const instance = new MBTiles(mbtilesFile + '?mode=ro', (err) => {
     if (err) {
       console.log('ERROR: Unable to open MBTiles.');
       console.log(`Make sure ${path.basename(mbtilesFile)} is valid MBTiles.`);
@@ -113,54 +98,63 @@ const startWithMBTiles = (mbtilesFile) => {
     instance.getInfo((err, info) => {
       if (err || !info) {
         console.log('ERROR: Metadata missing in the MBTiles.');
-        console.log(`       Make sure ${path.basename(mbtilesFile)} is valid MBTiles.`);
+        console.log(
+          `Make sure ${path.basename(mbtilesFile)} is valid MBTiles.`,
+        );
         process.exit(1);
       }
       const bounds = info.bounds;
 
-      const styleDir = path.resolve(__dirname, "../node_modules/tileserver-gl-styles/");
+      const styleDir = path.resolve(
+        __dirname,
+        '../node_modules/tileserver-gl-styles/',
+      );
 
       const config = {
-        "options": {
-          "paths": {
-            "root": styleDir,
-            "fonts": "fonts",
-            "styles": "styles",
-            "mbtiles": path.dirname(mbtilesFile)
-          }
+        options: {
+          paths: {
+            root: styleDir,
+            fonts: 'fonts',
+            styles: 'styles',
+            mbtiles: path.dirname(mbtilesFile),
           },
-        "styles": {},
-        "data": {}
+        },
+        styles: {},
+        data: {},
       };
 
-      if (info.format === 'pbf' &&
-        info.name.toLowerCase().indexOf('openmaptiles') > -1) {
-
+      if (
+        info.format === 'pbf' &&
+        info.name.toLowerCase().indexOf('openmaptiles') > -1
+      ) {
         config['data'][`v3`] = {
-          "mbtiles": path.basename(mbtilesFile)
+          mbtiles: path.basename(mbtilesFile),
         };
 
-
         const styles = fs.readdirSync(path.resolve(styleDir, 'styles'));
-        for (let styleName of styles) {
+        for (const styleName of styles) {
           const styleFileRel = styleName + '/style.json';
           const styleFile = path.resolve(styleDir, 'styles', styleFileRel);
           if (fs.existsSync(styleFile)) {
             config['styles'][styleName] = {
-              "style": styleFileRel,
-              "tilejson": {
-                "bounds": bounds
-              }
+              style: styleFileRel,
+              tilejson: {
+                bounds: bounds,
+              },
             };
           }
         }
       } else {
-        console.log(`WARN: MBTiles not in "openmaptiles" format. Serving raw data only...`);
-        config['data'][(info.id || 'mbtiles')
+        console.log(
+          `WARN: MBTiles not in "openmaptiles" format. Serving raw data only...`,
+        );
+        config['data'][
+          (info.id || 'mbtiles')
             .replace(/\//g, '_')
             .replace(/:/g, '_')
-                           .replace(/\?/g, '_')] = {
-          "mbtiles": path.basename(mbtilesFile)
+            .replace(/\?/g, '_')
+        ] = {
+          mbtiles: path.basename(mbtilesFile),
         };
       }
 
@@ -181,7 +175,7 @@ fs.stat(path.resolve(opts.config), (err, stats) => {
     if (!mbtiles) {
       // try to find in the cwd
       const files = fs.readdirSync(process.cwd());
-      for (let filename of files) {
+      for (const filename of files) {
         if (filename.endsWith('.mbtiles')) {
           const mbTilesStats = fs.statSync(filename);
           if (mbTilesStats.isFile() && mbTilesStats.size > 0) {
@@ -194,7 +188,8 @@ fs.stat(path.resolve(opts.config), (err, stats) => {
         console.log(`No MBTiles specified, using ${mbtiles}`);
         return startWithMBTiles(mbtiles);
       } else {
-        const url = 'https://github.com/maptiler/tileserver-gl/releases/download/v1.3.0/zurich_switzerland.mbtiles';
+        const url =
+          'https://github.com/maptiler/tileserver-gl/releases/download/v1.3.0/zurich_switzerland.mbtiles';
         const filename = 'zurich_switzerland.mbtiles';
         const stream = fs.createWriteStream(filename);
         console.log(`No MBTiles found`);

src/serve_data.js

@@ -1,27 +1,128 @@
 'use strict';
 
-const fs = require('fs');
-const path = require('path');
-const zlib = require('zlib');
+import fs from 'node:fs';
+import path from 'path';
+import zlib from 'zlib';
 
-const clone = require('clone');
-const express = require('express');
-const MBTiles = require('@mapbox/mbtiles');
-const Pbf = require('pbf');
-const VectorTile = require('@mapbox/vector-tile').VectorTile;
+import clone from 'clone';
+import express from 'express';
+import MBTiles from '@mapbox/mbtiles';
+import Pbf from 'pbf';
+import { VectorTile } from '@mapbox/vector-tile';
 
-const utils = require('./utils');
+import { getTileUrls, fixTileJSONCenter } from './utils.js';
 
-module.exports = {
+export const serve_data = {
   init: (options, repo) => {
     const app = express().disable('x-powered-by');
 
-    app.get('/:id/:z(\\d+)/:x(\\d+)/:y(\\d+).:format([\\w.]+)', (req, res, next) => {
+    app.get(
+      '/:id/:z(\\d+)/:x(\\d+)/:y(\\d+).:format([\\w.]+)',
+      (req, res, next) => {
+        const item = repo[req.params.id];
+        if (!item) {
+          return res.sendStatus(404);
+        }
+        const tileJSONFormat = item.tileJSON.format;
+        const z = req.params.z | 0;
+        const x = req.params.x | 0;
+        const y = req.params.y | 0;
+        let format = req.params.format;
+        if (format === options.pbfAlias) {
+          format = 'pbf';
+        }
+        if (
+          format !== tileJSONFormat &&
+          !(format === 'geojson' && tileJSONFormat === 'pbf')
+        ) {
+          return res.status(404).send('Invalid format');
+        }
+        if (
+          z < item.tileJSON.minzoom ||
+          0 ||
+          x < 0 ||
+          y < 0 ||
+          z > item.tileJSON.maxzoom ||
+          x >= Math.pow(2, z) ||
+          y >= Math.pow(2, z)
+        ) {
+          return res.status(404).send('Out of bounds');
+        }
+        item.source.getTile(z, x, y, (err, data, headers) => {
+          let isGzipped;
+          if (err) {
+            if (/does not exist/.test(err.message)) {
+              return res.status(204).send();
+            } else {
+              return res
+                .status(500)
+                .header('Content-Type', 'text/plain')
+                .send(err.message);
+            }
+          } else {
+            if (data == null) {
+              return res.status(404).send('Not found');
+            } else {
+              if (tileJSONFormat === 'pbf') {
+                isGzipped =
+                  data.slice(0, 2).indexOf(Buffer.from([0x1f, 0x8b])) === 0;
+                if (options.dataDecoratorFunc) {
+                  if (isGzipped) {
+                    data = zlib.unzipSync(data);
+                    isGzipped = false;
+                  }
+                  data = options.dataDecoratorFunc(id, 'data', data, z, x, y);
+                }
+              }
+              if (format === 'pbf') {
+                headers['Content-Type'] = 'application/x-protobuf';
+              } else if (format === 'geojson') {
+                headers['Content-Type'] = 'application/json';
+
+                if (isGzipped) {
+                  data = zlib.unzipSync(data);
+                  isGzipped = false;
+                }
+
+                const tile = new VectorTile(new Pbf(data));
+                const geojson = {
+                  type: 'FeatureCollection',
+                  features: [],
+                };
+                for (const layerName in tile.layers) {
+                  const layer = tile.layers[layerName];
+                  for (let i = 0; i < layer.length; i++) {
+                    const feature = layer.feature(i);
+                    const featureGeoJSON = feature.toGeoJSON(x, y, z);
+                    featureGeoJSON.properties.layer = layerName;
+                    geojson.features.push(featureGeoJSON);
+                  }
+                }
+                data = JSON.stringify(geojson);
+              }
+              delete headers['ETag']; // do not trust the tile ETag -- regenerate
+              headers['Content-Encoding'] = 'gzip';
+              res.set(headers);
+
+              if (!isGzipped) {
+                data = zlib.gzipSync(data);
+                isGzipped = true;
+              }
+
+              return res.status(200).send(data);
+            }
+          }
+        });
+      },
+    );
+
+    app.get('/:id/:t(\\d+)/:z(\\d+)/:x(\\d+)/:y(\\d+).:format([\\w.]+)', (req, res, next) => {
       const item = repo[req.params.id];
       if (!item) {
         return res.sendStatus(404);
       }
       let tileJSONFormat = item.tileJSON.format;
+      const t = req.params.t | 0;
       const z = req.params.z | 0;
       const x = req.params.x | 0;
       const y = req.params.y | 0;
@@ -30,15 +131,16 @@ module.exports = {
         format = 'pbf';
       }
       if (format !== tileJSONFormat &&
-          !(format === 'geojson' && tileJSONFormat === 'pbf')) {
+          !(format === 'geojson' && tileJSONFormat === 'pbf') && format !== 'png') {
         return res.status(404).send('Invalid format');
       }
       if (z < item.tileJSON.minzoom || 0 || x < 0 || y < 0 ||
           z > item.tileJSON.maxzoom ||
-          x >= Math.pow(2, z) || y >= Math.pow(2, z)) {
+          x >= Math.pow(2, z) || y >= Math.pow(2, z) ||
+          t < 0) {
         return res.status(404).send('Out of bounds');
       }
-      item.source.getTile(z, x, y, (err, data, headers) => {
+      item.source.getTileT(t, z, x, y, (err, data, headers) => {
         let isGzipped;
         if (err) {
           if (/does not exist/.test(err.message)) {
@@ -63,6 +165,8 @@ module.exports = {
             }
             if (format === 'pbf') {
               headers['Content-Type'] = 'application/x-protobuf';
+            } else if (format === 'png') {
+              headers['Content-Type'] = 'image/png';
             } else if (format === 'geojson') {
               headers['Content-Type'] = 'application/json';
 
@@ -108,10 +212,16 @@ module.exports = {
         return res.sendStatus(404);
       }
       const info = clone(item.tileJSON);
-      info.tiles = utils.getTileUrls(req, info.tiles,
-                                     `data/${req.params.id}`, info.format, item.publicUrl, {
-                                       'pbf': options.pbfAlias
-                                     });
+      info.tiles = getTileUrls(
+        req,
+        info.tiles,
+        `data/${req.params.id}`,
+        info.format,
+        item.publicUrl,
+        {
+          pbf: options.pbfAlias,
+        },
+      );
       return res.send(info);
     });
 
@@ -120,7 +230,7 @@ module.exports = {
   add: (options, repo, params, id, publicUrl) => {
     const mbtilesFile = path.resolve(options.paths.mbtiles, params.mbtiles);
     let tileJSON = {
-      'tiles': params.domains || options.domains
+      tiles: params.domains || options.domains,
     };
 
     const mbtilesFileStats = fs.statSync(mbtilesFile);
@@ -129,7 +239,7 @@ module.exports = {
     }
     let source;
     const sourceInfoPromise = new Promise((resolve, reject) => {
-      source = new MBTiles(mbtilesFile, err => {
+      source = new MBTiles(mbtilesFile + '?mode=ro', (err) => {
         if (err) {
           reject(err);
           return;
@@ -150,7 +260,7 @@ module.exports = {
           delete tileJSON['scheme'];
 
           Object.assign(tileJSON, params.tilejson || {});
-          utils.fixTileJSONCenter(tileJSON);
+          fixTileJSONCenter(tileJSON);
 
           if (options.dataDecoratorFunc) {
             tileJSON = options.dataDecoratorFunc(id, 'tilejson', tileJSON);
@@ -164,8 +274,8 @@ module.exports = {
       repo[id] = {
         tileJSON,
         publicUrl,
-        source
-      }
-    });
-  }
+        source,
+      };
+    });
+  },
 };

src/serve_font.js

@@ -1,12 +1,12 @@
 'use strict';
 
-const express = require('express');
-const fs = require('fs');
-const path = require('path');
+import express from 'express';
+import fs from 'node:fs';
+import path from 'path';
 
-const utils = require('./utils');
+import { getFontsPbf } from './utils.js';
 
-module.exports = (options, allowedFonts) => {
+export const serve_font = (options, allowedFonts) => {
   const app = express().disable('x-powered-by');
 
   const lastModified = new Date().toUTCString();
@@ -26,8 +26,10 @@ module.exports = (options, allowedFonts) => {
             reject(err);
             return;
           }
-          if (stats.isDirectory() &&
-            fs.existsSync(path.join(fontPath, file, '0-255.pbf'))) {
+          if (
+            stats.isDirectory() &&
+            fs.existsSync(path.join(fontPath, file, '0-255.pbf'))
+          ) {
             existingFonts[path.basename(file)] = true;
           }
         });
@@ -40,19 +42,26 @@ module.exports = (options, allowedFonts) => {
     const fontstack = decodeURI(req.params.fontstack);
     const range = req.params.range;
 
-    utils.getFontsPbf(options.serveAllFonts ? null : allowedFonts,
-      fontPath, fontstack, range, existingFonts).then(concated => {
+    getFontsPbf(
+      options.serveAllFonts ? null : allowedFonts,
+      fontPath,
+      fontstack,
+      range,
+      existingFonts,
+    ).then(
+      (concated) => {
         res.header('Content-type', 'application/x-protobuf');
         res.header('Last-Modified', lastModified);
         return res.send(concated);
-      }, err => res.status(400).send(err)
+      },
+      (err) => res.status(400).header('Content-Type', 'text/plain').send(err),
     );
   });
 
   app.get('/fonts.json', (req, res, next) => {
     res.header('Content-type', 'application/json');
     return res.send(
-      Object.keys(options.serveAllFonts ? existingFonts : allowedFonts).sort()
+      Object.keys(options.serveAllFonts ? existingFonts : allowedFonts).sort(),
     );
   });
 

src/serve_light.js

@@ -0,0 +1,9 @@
+/* eslint-disable @typescript-eslint/no-empty-function */
+/* eslint-disable @typescript-eslint/no-unused-vars */
+'use strict';
+
+export const serve_rendered = {
+  init: (options, repo) => {},
+  add: (options, repo, params, id, publicUrl, dataResolver) => {},
+  remove: (repo, id) => {},
+};

src/serve_style.js

@@ -1,18 +1,18 @@
 'use strict';
 
-const path = require('path');
-const fs = require('fs');
+import path from 'path';
+import fs from 'node:fs';
 
-const clone = require('clone');
-const express = require('express');
-import {validate} from '@mapbox/mapbox-gl-style-spec';
+import clone from 'clone';
+import express from 'express';
+import { validate } from '@maplibre/maplibre-gl-style-spec';
 
-const utils = require('./utils');
+import { getPublicUrl } from './utils.js';
 
 const httpTester = /^(http(s)?:)?\/\//;
 
 const fixUrl = (req, url, publicUrl, opt_nokey) => {
-  if (!url || (typeof url !== 'string') || url.indexOf('local://') !== 0) {
+  if (!url || typeof url !== 'string' || url.indexOf('local://') !== 0) {
     return url;
   }
   const queryParams = [];
@@ -23,11 +23,10 @@ const fixUrl = (req, url, publicUrl, opt_nokey) => {
   if (queryParams.length) {
     query = `?${queryParams.join('&')}`;
   }
-  return url.replace(
-    'local://', utils.getPublicUrl(publicUrl, req)) + query;
+  return url.replace('local://', getPublicUrl(publicUrl, req)) + query;
 };
 
-module.exports = {
+export const serve_style = {
   init: (options, repo) => {
     const app = express().disable('x-powered-by');
 
@@ -43,10 +42,20 @@ module.exports = {
       }
       // mapbox-gl-js viewer cannot handle sprite urls with query
       if (styleJSON_.sprite) {
-        styleJSON_.sprite = fixUrl(req, styleJSON_.sprite, item.publicUrl, false);
+        styleJSON_.sprite = fixUrl(
+          req,
+          styleJSON_.sprite,
+          item.publicUrl,
+          false,
+        );
       }
       if (styleJSON_.glyphs) {
-        styleJSON_.glyphs = fixUrl(req, styleJSON_.glyphs, item.publicUrl, false);
+        styleJSON_.glyphs = fixUrl(
+          req,
+          styleJSON_.glyphs,
+          item.publicUrl,
+          false,
+        );
       }
       return res.send(styleJSON_);
     });
@@ -56,8 +65,8 @@ module.exports = {
       if (!item || !item.spritePath) {
         return res.sendStatus(404);
       }
-      const scale = req.params.scale,
-        format = req.params.format;
+      const scale = req.params.scale;
+      const format = req.params.format;
       const filename = `${item.spritePath + (scale || '')}.${format}`;
       return fs.readFile(filename, (err, data) => {
         if (err) {
@@ -87,23 +96,25 @@ module.exports = {
       return false;
     }
 
-    let validationErrors = validate(styleFileData);
+    const validationErrors = validate(styleFileData);
     if (validationErrors.length > 0) {
-      console.log(`The file "${params.style}" is not valid a valid style file:`);
+      console.log(
+        `The file "${params.style}" is not valid a valid style file:`,
+      );
       for (const err of validationErrors) {
         console.log(`${err.line}: ${err.message}`);
       }
       return false;
     }
-    let styleJSON = JSON.parse(styleFileData);
+    const styleJSON = JSON.parse(styleFileData);
 
     for (const name of Object.keys(styleJSON.sources)) {
       const source = styleJSON.sources[name];
       const url = source.url;
       if (url && url.lastIndexOf('mbtiles:', 0) === 0) {
         let mbtilesFile = url.substring('mbtiles://'.length);
-        const fromData = mbtilesFile[0] === '{' &&
-          mbtilesFile[mbtilesFile.length - 1] === '}';
+        const fromData =
+          mbtilesFile[0] === '{' && mbtilesFile[mbtilesFile.length - 1] === '}';
 
         if (fromData) {
           mbtilesFile = mbtilesFile.substr(1, mbtilesFile.length - 2);
@@ -120,7 +131,7 @@ module.exports = {
       }
     }
 
-    for (let obj of styleJSON.layers) {
+    for (const obj of styleJSON.layers) {
       if (obj['type'] === 'symbol') {
         const fonts = (obj['layout'] || {})['text-font'];
         if (fonts && fonts.length) {
@@ -135,10 +146,14 @@ module.exports = {
     let spritePath;
 
     if (styleJSON.sprite && !httpTester.test(styleJSON.sprite)) {
-      spritePath = path.join(options.paths.sprites,
+      spritePath = path.join(
+        options.paths.sprites,
         styleJSON.sprite
           .replace('{style}', path.basename(styleFile, '.json'))
-          .replace('{styleJsonFolder}', path.relative(options.paths.sprites, path.dirname(styleFile)))
+          .replace(
+            '{styleJsonFolder}',
+            path.relative(options.paths.sprites, path.dirname(styleFile)),
+          ),
       );
       styleJSON.sprite = `local://styles/${id}/sprite`;
     }
@@ -150,9 +165,9 @@ module.exports = {
       styleJSON,
       spritePath,
       publicUrl,
-      name: styleJSON.name
+      name: styleJSON.name,
     };
 
     return true;
-  }
+  },
 };

src/server.js

@@ -1,54 +1,68 @@
 #!/usr/bin/env node
 'use strict';
 
-process.env.UV_THREADPOOL_SIZE =
-    Math.ceil(Math.max(4, require('os').cpus().length * 1.5));
+import os from 'os';
+process.env.UV_THREADPOOL_SIZE = Math.ceil(Math.max(4, os.cpus().length * 1.5));
 
-const fs = require('fs');
-const path = require('path');
+import fs from 'node:fs';
+import path from 'path';
 
-const chokidar = require('chokidar');
-const clone = require('clone');
-const cors = require('cors');
-const enableShutdown = require('http-shutdown');
-const express = require('express');
-const handlebars = require('handlebars');
-const mercator = new (require('@mapbox/sphericalmercator'))();
-const morgan = require('morgan');
+import chokidar from 'chokidar';
+import clone from 'clone';
+import cors from 'cors';
+import enableShutdown from 'http-shutdown';
+import express from 'express';
+import handlebars from 'handlebars';
+import SphericalMercator from '@mapbox/sphericalmercator';
+const mercator = new SphericalMercator();
+import morgan from 'morgan';
+import { serve_data } from './serve_data.js';
+import { serve_style } from './serve_style.js';
+import { serve_font } from './serve_font.js';
+import { getTileUrls, getPublicUrl } from './utils.js';
 
-const packageJson = require('../package');
-const serve_font = require('./serve_font');
-const serve_style = require('./serve_style');
-const serve_data = require('./serve_data');
-const utils = require('./utils');
+import { fileURLToPath } from 'url';
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const packageJson = JSON.parse(
+  fs.readFileSync(__dirname + '/../package.json', 'utf8'),
+);
 
-let serve_rendered = null;
 const isLight = packageJson.name.slice(-6) === '-light';
-if (!isLight) {
-  // do not require `serve_rendered` in the light package
-  serve_rendered = require('./serve_rendered');
-}
+const serve_rendered = (
+  await import(`${!isLight ? `./serve_rendered.js` : `./serve_light.js`}`)
+).serve_rendered;
 
+/**
+ *
+ * @param opts
+ */
 function start(opts) {
   console.log('Starting server');
 
-  const app = express().disable('x-powered-by'),
-    serving = {
+  const app = express().disable('x-powered-by');
+  const serving = {
     styles: {},
     rendered: {},
     data: {},
-      fonts: {}
+    fonts: {},
   };
 
   app.enable('trust proxy');
 
   if (process.env.NODE_ENV !== 'test') {
-    const defaultLogFormat = process.env.NODE_ENV === 'production' ? 'tiny' : 'dev';
+    const defaultLogFormat =
+      process.env.NODE_ENV === 'production' ? 'tiny' : 'dev';
     const logFormat = opts.logFormat || defaultLogFormat;
-    app.use(morgan(logFormat, {
-      stream: opts.logFile ? fs.createWriteStream(opts.logFile, { flags: 'a' }) : process.stdout,
-      skip: (req, res) => opts.silent && (res.statusCode === 200 || res.statusCode === 304)
-    }));
+    app.use(
+      morgan(logFormat, {
+        stream: opts.logFile
+          ? fs.createWriteStream(opts.logFile, { flags: 'a' })
+          : process.stdout,
+        skip: (req, res) =>
+          opts.silent && (res.statusCode === 200 || res.statusCode === 304),
+      }),
+    );
   }
 
   let config = opts.config || null;
@@ -56,7 +70,7 @@ function start(opts) {
   if (opts.configPath) {
     configPath = path.resolve(opts.configPath);
     try {
-      config = clone(require(configPath));
+      config = JSON.parse(fs.readFileSync(configPath, 'utf8'));
     } catch (e) {
       console.log('ERROR: Config file not found or invalid!');
       console.log('       See README.md for instructions and sample data.');
@@ -73,17 +87,21 @@ function start(opts) {
   options.paths = paths;
   paths.root = path.resolve(
     configPath ? path.dirname(configPath) : process.cwd(),
-    paths.root || '');
+    paths.root || '',
+  );
   paths.styles = path.resolve(paths.root, paths.styles || '');
   paths.fonts = path.resolve(paths.root, paths.fonts || '');
   paths.sprites = path.resolve(paths.root, paths.sprites || '');
   paths.mbtiles = path.resolve(paths.root, paths.mbtiles || '');
+  paths.icons = path.resolve(paths.root, paths.icons || '');
 
   const startupPromises = [];
 
-  const checkPath = type => {
+  const checkPath = (type) => {
     if (!fs.existsSync(paths[type])) {
-      console.error(`The specified path for "${type}" does not exist (${paths[type]}).`);
+      console.error(
+        `The specified path for "${type}" does not exist (${paths[type]}).`,
+      );
       process.exit(1);
     }
   };
@@ -91,10 +109,50 @@ function start(opts) {
   checkPath('fonts');
   checkPath('sprites');
   checkPath('mbtiles');
+  checkPath('icons');
+
+  /**
+   * Recursively get all files within a directory.
+   * Inspired by https://stackoverflow.com/a/45130990/10133863
+   * @param {string} directory Absolute path to a directory to get files from.
+   */
+  const getFiles = async (directory) => {
+    // Fetch all entries of the directory and attach type information
+    const dirEntries = await fs.promises.readdir(directory, {
+      withFileTypes: true,
+    });
+
+    // Iterate through entries and return the relative file-path to the icon directory if it is not a directory
+    // otherwise initiate a recursive call
+    const files = await Promise.all(
+      dirEntries.map((dirEntry) => {
+        const entryPath = path.resolve(directory, dirEntry.name);
+        return dirEntry.isDirectory()
+          ? getFiles(entryPath)
+          : entryPath.replace(paths.icons + path.sep, '');
+      }),
+    );
+
+    // Flatten the list of files to a single array
+    return files.flat();
+  };
+
+  // Load all available icons into a settings object
+  startupPromises.push(
+    new Promise((resolve) => {
+      getFiles(paths.icons).then((files) => {
+        paths.availableIcons = files;
+        resolve();
+      });
+    }),
+  );
 
   if (options.dataDecorator) {
     try {
-      options.dataDecoratorFunc = require(path.resolve(paths.root, options.dataDecorator));
+      options.dataDecoratorFunc = require(path.resolve(
+        paths.root,
+        options.dataDecorator,
+      ));
     } catch (e) {}
   }
 
@@ -106,57 +164,72 @@ function start(opts) {
 
   app.use('/data/', serve_data.init(options, serving.data));
   app.use('/styles/', serve_style.init(options, serving.styles));
-  if (serve_rendered) {
+  if (!isLight) {
     startupPromises.push(
-      serve_rendered.init(options, serving.rendered)
-        .then(sub => {
+      serve_rendered.init(options, serving.rendered).then((sub) => {
         app.use('/styles/', sub);
-        })
+      }),
     );
   }
 
-  let addStyle = (id, item, allowMoreData, reportFonts) => {
+  const addStyle = (id, item, allowMoreData, reportFonts) => {
     let success = true;
     if (item.serve_data !== false) {
-        success = serve_style.add(options, serving.styles, item, id, opts.publicUrl,
+      success = serve_style.add(
+        options,
+        serving.styles,
+        item,
+        id,
+        opts.publicUrl,
         (mbtiles, fromData) => {
           let dataItemId;
-          for (const id of Object.keys(data)) {
+          for (const id of Object.keys(serving.data)) {
             if (fromData) {
               if (id === mbtiles) {
                 dataItemId = id;
               }
             } else {
-              if (data[id].mbtiles === mbtiles) {
+              if (serving.data[id].mbtiles === mbtiles) {
                 dataItemId = id;
               }
             }
           }
-          if (dataItemId) { // mbtiles exist in the data config
+          if (dataItemId) {
+            // mbtiles exist in the data config
             return dataItemId;
           } else {
             if (fromData || !allowMoreData) {
-              console.log(`ERROR: style "${item.style}" using unknown mbtiles "${mbtiles}"! Skipping...`);
+              console.log(
+                `ERROR: style "${item.style}" using unknown mbtiles "${mbtiles}"! Skipping...`,
+              );
               return undefined;
             } else {
               let id = mbtiles.substr(0, mbtiles.lastIndexOf('.')) || mbtiles;
-              while (data[id]) id += '_';
+              //while (data[id]) id += '_';
               data[id] = {
-                'mbtiles': mbtiles
+                mbtiles: mbtiles,
               };
               return id;
             }
           }
-        }, font => {
+        },
+        (font) => {
           if (reportFonts) {
             serving.fonts[font] = true;
           }
-        });
+        },
+      );
     }
     if (success && item.serve_rendered !== false) {
-      if (serve_rendered) {
-        startupPromises.push(serve_rendered.add(options, serving.rendered, item, id, opts.publicUrl,
-          mbtiles => {
+      if (!isLight) {
+        startupPromises.push(
+          serve_rendered.add(
+            options,
+            serving.rendered,
+            item,
+            id,
+            opts.publicUrl,
+            (mbtiles) => {
               let mbtilesFile;
               for (const id of Object.keys(data)) {
                 if (id === mbtiles) {
@@ -164,14 +237,20 @@ function start(opts) {
                 }
               }
               return mbtilesFile;
-          }
-        ));
+            },
+          ),
+        );
       } else {
         item.serve_rendered = false;
       }
     }
   };
 
+  let addData = (id, item) => {
+    console.log(`Add data ${id}`);
+    Promise.all([serve_data.add(options, serving.data, item, id, opts.publicUrl)]);
+  };
+
   for (const id of Object.keys(config.styles || {})) {
     const item = config.styles[id];
     if (!item.style || item.style.length === 0) {
@@ -183,9 +262,9 @@ function start(opts) {
   }
 
   startupPromises.push(
-    serve_font(options, serving.fonts).then(sub => {
+    serve_font(options, serving.fonts).then((sub) => {
       app.use('/', sub);
-    })
+    }),
   );
 
   for (const id of Object.keys(data)) {
@@ -196,46 +275,77 @@ function start(opts) {
     }
 
     startupPromises.push(
-      serve_data.add(options, serving.data, item, id, opts.publicUrl)
+      serve_data.add(options, serving.data, item, id, opts.publicUrl),
     );
   }
 
   if (options.serveAllStyles) {
+    fs.readdir(options.paths.mbtiles, {withFileTypes: true}, (err, files) => {
+      if (err) {
+        return;
+      }
+      for (const file of files) {
+        if (file.isFile() && path.extname(file.name).toLowerCase() == '.mbtiles') {
+          let id = path.basename(file.name, '.mbtiles');
+          let item = {
+            mbtiles: file.name
+          };
+          addData(id, item);
+        }
+      }
+    });
+
     fs.readdir(options.paths.styles, { withFileTypes: true }, (err, files) => {
       if (err) {
         return;
       }
       for (const file of files) {
-        if (file.isFile() &&
-            path.extname(file.name).toLowerCase() == '.json') {
-          let id = path.basename(file.name, '.json');
-          let item = {
-            style: file.name
+        if (file.isFile() && path.extname(file.name).toLowerCase() == '.json') {
+          const id = path.basename(file.name, '.json');
+          const item = {
+            style: file.name,
           };
-          addStyle(id, item, false, false);
+          addStyle(id, item, true, true);
         }
       }
     });
 
-    const watcher = chokidar.watch(path.join(options.paths.styles, '*.json'),
+    const watcherData = chokidar.watch(path.join(options.paths.mbtiles, '*.mbtiles'),
         {
         });
-    watcher.on('all',
-      (eventType, filename) => {
+    watcherData.on('all', (eventType, filename) => {
       if (filename) {
-          let id = path.basename(filename, '.json');
+        let id = path.basename(filename, '.mbtiles');
+        console.log(`Data "${id}" added`);
+
+        if (eventType == "add") {
+          let item = {
+            mbtiles: filename
+          };
+          addData(id, item);
+        }
+      }
+    });
+
+    const watcher = chokidar.watch(
+      path.join(options.paths.styles, '*.json'),
+      {},
+    );
+    watcher.on('all', (eventType, filename) => {
+      if (filename) {
+        const id = path.basename(filename, '.json');
         console.log(`Style "${id}" changed, updating...`);
 
         serve_style.remove(serving.styles, id);
-          if (serve_rendered) {
+        if (!isLight) {
           serve_rendered.remove(serving.rendered, id);
         }
 
-          if (eventType == "add" || eventType == "change") {
-            let item = {
-              style: filename
+        if (eventType == 'add' || eventType == 'change') {
+          const item = {
+            style: filename,
           };
-            addStyle(id, item, false, false);
+          addStyle(id, item, true, true);
         }
       }
     });
@@ -243,14 +353,19 @@ function start(opts) {
 
   app.get('/styles.json', (req, res, next) => {
     const result = [];
-    const query = req.query.key ? (`?key=${encodeURIComponent(req.query.key)}`) : '';
+    const query = req.query.key
+      ? `?key=${encodeURIComponent(req.query.key)}`
+      : '';
     for (const id of Object.keys(serving.styles)) {
       const styleJSON = serving.styles[id].styleJSON;
       result.push({
         version: styleJSON.version,
         name: styleJSON.name,
         id: id,
-        url: `${utils.getPublicUrl(opts.publicUrl, req)}styles/${id}/style.json${query}`
+        url: `${getPublicUrl(
+          opts.publicUrl,
+          req,
+        )}styles/${id}/style.json${query}`,
       });
     }
     res.send(result);
@@ -265,9 +380,16 @@ function start(opts) {
       } else {
         path = `${type}/${id}`;
       }
-      info.tiles = utils.getTileUrls(req, info.tiles, path, info.format, opts.publicUrl, {
-        'pbf': options.pbfAlias
-      });
+      info.tiles = getTileUrls(
+        req,
+        info.tiles,
+        path,
+        info.format,
+        opts.publicUrl,
+        {
+          pbf: options.pbfAlias,
+        },
+      );
       arr.push(info);
     }
     return arr;
@@ -293,12 +415,15 @@ function start(opts) {
     if (template === 'index') {
       if (options.frontPage === false) {
         return;
-      } else if (options.frontPage &&
-        options.frontPage.constructor === String) {
+      } else if (
+        options.frontPage &&
+        options.frontPage.constructor === String
+      ) {
         templateFile = path.resolve(paths.root, options.frontPage);
       }
     }
-    startupPromises.push(new Promise((resolve, reject) => {
+    startupPromises.push(
+      new Promise((resolve, reject) => {
         fs.readFile(templateFile, (err, content) => {
           if (err) {
             err = new Error(`Template not found: ${err.message}`);
@@ -315,21 +440,27 @@ function start(opts) {
                 return res.status(404).send('Not found');
               }
             }
-          data['server_version'] = `${packageJson.name} v${packageJson.version}`;
+            data[
+              'server_version'
+            ] = `${packageJson.name} v${packageJson.version}`;
             data['public_url'] = opts.publicUrl || '/';
             data['is_light'] = isLight;
-          data['key_query_part'] =
-            req.query.key ? `key=${encodeURIComponent(req.query.key)}&` : '';
-          data['key_query'] = req.query.key ? `?key=${encodeURIComponent(req.query.key)}` : '';
+            data['key_query_part'] = req.query.key
+              ? `key=${encodeURIComponent(req.query.key)}&`
+              : '';
+            data['key_query'] = req.query.key
+              ? `?key=${encodeURIComponent(req.query.key)}`
+              : '';
             if (template === 'wmts') res.set('Content-Type', 'text/xml');
             return res.status(200).send(compiled(data));
           });
           resolve();
         });
-    }));
+      }),
+    );
   };
 
-  serveTemplate('/$', 'index', req => {
+  serveTemplate('/$', 'index', (req) => {
     const styles = clone(serving.styles || {});
     for (const id of Object.keys(styles)) {
       const style = styles[id];
@@ -339,15 +470,23 @@ function start(opts) {
       if (style.serving_rendered) {
         const center = style.serving_rendered.tileJSON.center;
         if (center) {
-          style.viewer_hash = `#${center[2]}/${center[1].toFixed(5)}/${center[0].toFixed(5)}`;
+          style.viewer_hash = `#${center[2]}/${center[1].toFixed(
+            5,
+          )}/${center[0].toFixed(5)}`;
 
           const centerPx = mercator.px([center[0], center[1]], center[2]);
-          style.thumbnail = `${center[2]}/${Math.floor(centerPx[0] / 256)}/${Math.floor(centerPx[1] / 256)}.png`;
+          style.thumbnail = `${center[2]}/${Math.floor(
+            centerPx[0] / 256,
+          )}/${Math.floor(centerPx[1] / 256)}.png`;
         }
 
-        style.xyz_link = utils.getTileUrls(
-          req, style.serving_rendered.tileJSON.tiles,
-          `styles/${id}`, style.serving_rendered.tileJSON.format, opts.publicUrl)[0];
+        style.xyz_link = getTileUrls(
+          req,
+          style.serving_rendered.tileJSON.tiles,
+          `styles/${id}`,
+          style.serving_rendered.tileJSON.format,
+          opts.publicUrl,
+        )[0];
       }
     }
     const data = clone(serving.data || {});
@@ -356,19 +495,29 @@ function start(opts) {
       const tilejson = data[id].tileJSON;
       const center = tilejson.center;
       if (center) {
-        data_.viewer_hash = `#${center[2]}/${center[1].toFixed(5)}/${center[0].toFixed(5)}`;
+        data_.viewer_hash = `#${center[2]}/${center[1].toFixed(
+          5,
+        )}/${center[0].toFixed(5)}`;
       }
       data_.is_vector = tilejson.format === 'pbf';
       if (!data_.is_vector) {
         if (center) {
           const centerPx = mercator.px([center[0], center[1]], center[2]);
-          data_.thumbnail = `${center[2]}/${Math.floor(centerPx[0] / 256)}/${Math.floor(centerPx[1] / 256)}.${data_.tileJSON.format}`;
+          data_.thumbnail = `${center[2]}/${Math.floor(
+            centerPx[0] / 256,
+          )}/${Math.floor(centerPx[1] / 256)}.${data_.tileJSON.format}`;
         }
 
-        data_.xyz_link = utils.getTileUrls(
-          req, tilejson.tiles, `data/${id}`, tilejson.format, opts.publicUrl, {
-            'pbf': options.pbfAlias
-          })[0];
+        data_.xyz_link = getTileUrls(
+          req,
+          tilejson.tiles,
+          `data/${id}`,
+          tilejson.format,
+          opts.publicUrl,
+          {
+            pbf: options.pbfAlias,
+          },
+        )[0];
       }
       if (data_.filesize) {
         let suffix = 'kB';
@@ -386,11 +535,11 @@ function start(opts) {
     }
     return {
       styles: Object.keys(styles).length ? styles : null,
-      data: Object.keys(data).length ? data : null
+      data: Object.keys(data).length ? data : null,
     };
   });
 
-  serveTemplate('/styles/:id/$', 'viewer', req => {
+  serveTemplate('/styles/:id/$', 'viewer', (req) => {
     const id = req.params.id;
     const style = clone(((serving.styles || {})[id] || {}).styleJSON);
     if (!style) {
@@ -408,22 +557,30 @@ function start(opts) {
     return res.redirect(301, '/styles/' + req.params.id + '/');
   });
   */
-  serveTemplate('/styles/:id/wmts.xml', 'wmts', req => {
+  serveTemplate('/styles/:id/wmts.xml', 'wmts', (req) => {
     const id = req.params.id;
     const wmts = clone((serving.styles || {})[id]);
     if (!wmts) {
       return null;
     }
-    if (wmts.hasOwnProperty("serve_rendered") && !wmts.serve_rendered) {
+    if (wmts.hasOwnProperty('serve_rendered') && !wmts.serve_rendered) {
       return null;
     }
     wmts.id = id;
     wmts.name = (serving.styles[id] || serving.rendered[id]).name;
-    wmts.baseUrl = `${req.get('X-Forwarded-Protocol') ? req.get('X-Forwarded-Protocol') : req.protocol}://${req.get('host')}`;
+    if (opts.publicUrl) {
+      wmts.baseUrl = opts.publicUrl;
+    } else {
+      wmts.baseUrl = `${
+        req.get('X-Forwarded-Protocol')
+          ? req.get('X-Forwarded-Protocol')
+          : req.protocol
+      }://${req.get('host')}/`;
+    }
     return wmts;
   });
 
-  serveTemplate('/data/:id/$', 'data', req => {
+  serveTemplate('/data/:id/$', 'data', (req) => {
     const id = req.params.id;
     const data = clone(serving.data[id]);
     if (!data) {
@@ -447,13 +604,17 @@ function start(opts) {
     }
   });
 
-  const server = app.listen(process.env.PORT || opts.port, process.env.BIND || opts.bind, function () {
+  const server = app.listen(
+    process.env.PORT || opts.port,
+    process.env.BIND || opts.bind,
+    function () {
       let address = this.address().address;
       if (address.indexOf('::') === 0) {
         address = `[${address}]`; // literal IPv6 address
       }
       console.log(`Listening at http://${address}:${this.address().port}/`);
-  });
+    },
+  );
 
   // add server.shutdown() to gracefully stop serving
   enableShutdown(server);
@@ -461,30 +622,39 @@ function start(opts) {
   return {
     app: app,
     server: server,
-    startupPromise: startupPromise
+    startupPromise: startupPromise,
   };
 }
 
-module.exports = opts => {
+/**
+ * Stop the server gracefully
+ * @param {string} signal Name of the received signal
+ */
+function stopGracefully(signal) {
+  console.log(`Caught signal ${signal}, stopping gracefully`);
+  process.exit();
+}
+
+/**
+ *
+ * @param opts
+ */
+export function server(opts) {
   const running = start(opts);
 
-  running.startupPromise.catch(err => {
+  running.startupPromise.catch((err) => {
     console.error(err.message);
     process.exit(1);
   });
 
-  process.on('SIGINT', () => {
-    process.exit();
-  });
+  process.on('SIGINT', stopGracefully);
+  process.on('SIGTERM', stopGracefully);
 
-  process.on('SIGHUP', () => {
+  process.on('SIGHUP', (signal) => {
+    console.log(`Caught signal ${signal}, refreshing`);
     console.log('Stopping server and reloading config');
 
     running.server.shutdown(() => {
-      for (const key in require.cache) {
-        delete require.cache[key];
-      }
-
       const restarted = start(opts);
       running.server = restarted.server;
       running.app = restarted.app;
@@ -492,4 +662,4 @@ module.exports = opts => {
   });
 
   return running;
-};
+}

src/utils.js

@@ -1,24 +1,57 @@
 'use strict';
 
-const path = require('path');
-const fs = require('fs');
+import path from 'path';
+import fs from 'node:fs';
 
-const clone = require('clone');
-const glyphCompose = require('@mapbox/glyph-pbf-composite');
+import clone from 'clone';
+import glyphCompose from '@mapbox/glyph-pbf-composite';
 
 
-module.exports.getPublicUrl = (publicUrl, req) => publicUrl || `${req.protocol}://${req.headers.host}/`;
+var EARTH_RADIUS = 6371.0088;
 
-module.exports.getTileUrls = (req, domains, path, format, publicUrl, aliases) => {
+function degToRad(degrees) {
+  return degrees * (Math.PI / 180);
+}
 
+function tileToLon(tileX, zoom) {
+  return ((tileX / 2**zoom) * 360.0) - 180.0;
+}
+
+function tileToLat(tileY, zoom) {
+  var n = Math.PI - 2 * Math.PI * tileY / 2**zoom;
+  return (180.0 / Math.PI) * Math.atan(0.5 * (Math.exp(n) - Math.exp(-n)));
+}
+
+/**
+ * Generate new URL object
+ * @param req
+ * @params {object} req - Express request
+ * @returns {URL} object
+ */
+const getUrlObject = (req) => {
+  const urlObject = new URL(`${req.protocol}://${req.headers.host}/`);
+  // support overriding hostname by sending X-Forwarded-Host http header
+  urlObject.hostname = req.hostname;
+  return urlObject;
+};
+
+export const getPublicUrl = (publicUrl, req) => {
+  if (publicUrl) {
+    return publicUrl;
+  }
+  return getUrlObject(req).toString();
+};
+
+export const getTileUrls = (req, domains, path, format, publicUrl, aliases) => {
+  const urlObject = getUrlObject(req);
   if (domains) {
     if (domains.constructor === String && domains.length > 0) {
       domains = domains.split(',');
     }
-    const host = req.headers.host;
-    const hostParts = host.split('.');
-    const relativeSubdomainsUsable = hostParts.length > 1 &&
-      !/^([0-9]{1,3}\.){3}[0-9]{1,3}(\:[0-9]+)?$/.test(host);
+    const hostParts = urlObject.host.split('.');
+    const relativeSubdomainsUsable =
+      hostParts.length > 1 &&
+      !/^([0-9]{1,3}\.){3}[0-9]{1,3}(\:[0-9]+)?$/.test(urlObject.host);
     const newDomains = [];
     for (const domain of domains) {
       if (domain.indexOf('*') !== -1) {
@@ -34,10 +67,9 @@ module.exports.getTileUrls = (req, domains, path, format, publicUrl, aliases) =>
     domains = newDomains;
   }
   if (!domains || domains.length == 0) {
-    domains = [req.headers.host];
+    domains = [urlObject.host];
   }
 
-  const key = req.query.key;
   const queryParams = [];
   if (req.query.key) {
     queryParams.push(`key=${encodeURIComponent(req.query.key)}`);
@@ -45,7 +77,7 @@ module.exports.getTileUrls = (req, domains, path, format, publicUrl, aliases) =>
   if (req.query.style) {
     queryParams.push(`style=${encodeURIComponent(req.query.style)}`);
   }
-  const query = queryParams.length > 0 ? (`?${queryParams.join('&')}`) : '';
+  const query = queryParams.length > 0 ? `?${queryParams.join('&')}` : '';
 
   if (aliases && aliases[format]) {
     format = aliases[format];
@@ -54,16 +86,18 @@ module.exports.getTileUrls = (req, domains, path, format, publicUrl, aliases) =>
   const uris = [];
   if (!publicUrl) {
     for (const domain of domains) {
-      uris.push(`${req.protocol}://${domain}/${path}/{z}/{x}/{y}.${format}${query}`);
+      uris.push(
+        `${req.protocol}://${domain}/${path}/{z}/{x}/{y}.${format}${query}`,
+      );
     }
   } else {
-    uris.push(`${publicUrl}${path}/{z}/{x}/{y}.${format}${query}`)
+    uris.push(`${publicUrl}${path}/{z}/{x}/{y}.${format}${query}`);
   }
 
   return uris;
 };
 
-module.exports.fixTileJSONCenter = tileJSON => {
+export const fixTileJSONCenter = (tileJSON) => {
   if (tileJSON.bounds && !tileJSON.center) {
     const fitWidth = 1024;
     const tiles = fitWidth / 256;
@@ -72,13 +106,14 @@ module.exports.fixTileJSONCenter = tileJSON => {
       (tileJSON.bounds[1] + tileJSON.bounds[3]) / 2,
       Math.round(
         -Math.log((tileJSON.bounds[2] - tileJSON.bounds[0]) / 360 / tiles) /
-        Math.LN2
-      )
+          Math.LN2,
+      ),
     ];
   }
 };
 
-const getFontPbf = (allowedFonts, fontPath, name, range, fallbacks) => new Promise((resolve, reject) => {
+const getFontPbf = (allowedFonts, fontPath, name, range, fallbacks) =>
+  new Promise((resolve, reject) => {
     if (!allowedFonts || (allowedFonts[name] && fallbacks)) {
       const filename = path.join(fontPath, name, `${range}.pbf`);
       if (!fallbacks) {
@@ -105,7 +140,10 @@ const getFontPbf = (allowedFonts, fontPath, name, range, fallbacks) => new Promi
 
             console.error(`ERROR: Trying to use ${fallbackName} as a fallback`);
             delete fallbacks[fallbackName];
-          getFontPbf(null, fontPath, fallbackName, range, fallbacks).then(resolve, reject);
+            getFontPbf(null, fontPath, fallbackName, range, fallbacks).then(
+              resolve,
+              reject,
+            );
           } else {
             reject(`Font load error: ${name}`);
           }
@@ -118,14 +156,26 @@ const getFontPbf = (allowedFonts, fontPath, name, range, fallbacks) => new Promi
     }
   });
 
-module.exports.getFontsPbf = (allowedFonts, fontPath, names, range, fallbacks) => {
+export const getFontsPbf = (
+  allowedFonts,
+  fontPath,
+  names,
+  range,
+  fallbacks,
+) => {
   const fonts = names.split(',');
   const queue = [];
   for (const font of fonts) {
     queue.push(
-      getFontPbf(allowedFonts, fontPath, font, range, clone(allowedFonts || fallbacks))
+      getFontPbf(
+        allowedFonts,
+        fontPath,
+        font,
+        range,
+        clone(allowedFonts || fallbacks),
+      ),
     );
   }
 
-  return Promise.all(queue).then(values => glyphCompose.combine(values));
+  return Promise.all(queue).then((values) => glyphCompose.combine(values));
 };

test/metadata.js

@@ -1,4 +1,4 @@
-var testTileJSONArray = function(url) {
+const testTileJSONArray = function (url) {
   describe(url + ' is array of TileJSONs', function () {
     it('is json', function (done) {
       supertest(app)
@@ -11,14 +11,15 @@ var testTileJSONArray = function(url) {
       supertest(app)
         .get(url)
         .expect(function (res) {
-          res.body.should.be.Array();
-          res.body.length.should.be.greaterThan(0);
-        }).end(done);
+          expect(res.body).to.be.a('array');
+          expect(res.body.length).to.be.greaterThan(0);
+        })
+        .end(done);
     });
   });
 };
 
-var testTileJSON = function(url) {
+const testTileJSON = function (url) {
   describe(url + ' is TileJSON', function () {
     it('is json', function (done) {
       supertest(app)
@@ -31,8 +32,9 @@ var testTileJSON = function(url) {
       supertest(app)
         .get(url)
         .expect(function (res) {
-          res.body.tiles.length.should.be.greaterThan(0);
-        }).end(done);
+          expect(res.body.tiles.length).to.be.greaterThan(0);
+        })
+        .end(done);
     });
   });
 };
@@ -40,9 +42,7 @@ var testTileJSON = function(url) {
 describe('Metadata', function () {
   describe('/health', function () {
     it('returns 200', function (done) {
-      supertest(app)
-        .get('/health')
-        .expect(200, done);
+      supertest(app).get('/health').expect(200, done);
     });
   });
 
@@ -62,12 +62,13 @@ describe('Metadata', function() {
       supertest(app)
         .get('/styles.json')
         .expect(function (res) {
-          res.body.should.be.Array();
-          res.body.length.should.be.greaterThan(0);
-          res.body[0].version.should.equal(8);
-          res.body[0].id.should.be.String();
-          res.body[0].name.should.be.String();
-        }).end(done);
+          expect(res.body).to.be.a('array');
+          expect(res.body.length).to.be.greaterThan(0);
+          expect(res.body[0].version).to.be.equal(8);
+          expect(res.body[0].id).to.be.a('string');
+          expect(res.body[0].name).to.be.a('string');
+        })
+        .end(done);
     });
   });
 

test/setup.js

@@ -1,17 +1,19 @@
 process.env.NODE_ENV = 'test';
 
-global.should = require('should');
-global.supertest = require('supertest');
+import { expect } from 'chai';
+import supertest from 'supertest';
+import { server } from '../src/server.js';
 
-require = require('esm')(module);
+global.expect = expect;
+global.supertest = supertest;
 
 before(function () {
   console.log('global setup');
   process.chdir('test_data');
-  var running = require('../src/server')({
+  const running = server({
     configPath: 'config.json',
     port: 8888,
-    publicUrl: '/test/'
+    publicUrl: '/test/',
   });
   global.app = running.app;
   global.server = running.server;
@@ -20,5 +22,8 @@ before(function() {
 
 after(function () {
   console.log('global teardown');
-  global.server.close(function() { console.log('Done'); process.exit(); });
+  global.server.close(function () {
+    console.log('Done');
+    process.exit();
+  });
 });

test/static.js

@@ -1,27 +1,55 @@
-var testStatic = function(prefix, q, format, status, scale, type, query) {
+const testStatic = function (prefix, q, format, status, scale, type, query) {
   if (scale) q += '@' + scale + 'x';
-  var path = '/styles/' + prefix + '/static/' + q + '.' + format;
+  let path = '/styles/' + prefix + '/static/' + q + '.' + format;
   if (query) {
     path += query;
   }
   it(path + ' returns ' + status, function (done) {
-    var test = supertest(app).get(path);
+    const test = supertest(app).get(path);
     if (status) test.expect(status);
     if (type) test.expect('Content-Type', type);
     test.end(done);
   });
 };
 
-var prefix = 'test-style';
+const prefix = 'test-style';
 
 describe('Static endpoints', function () {
   describe('center-based', function () {
     describe('valid requests', function () {
       describe('various formats', function () {
-        testStatic(prefix, '0,0,0/256x256', 'png', 200, undefined, /image\/png/);
-        testStatic(prefix, '0,0,0/256x256', 'jpg', 200, undefined, /image\/jpeg/);
-        testStatic(prefix, '0,0,0/256x256', 'jpeg', 200, undefined, /image\/jpeg/);
-        testStatic(prefix, '0,0,0/256x256', 'webp', 200, undefined, /image\/webp/);
+        testStatic(
+          prefix,
+          '0,0,0/256x256',
+          'png',
+          200,
+          undefined,
+          /image\/png/,
+        );
+        testStatic(
+          prefix,
+          '0,0,0/256x256',
+          'jpg',
+          200,
+          undefined,
+          /image\/jpeg/,
+        );
+        testStatic(
+          prefix,
+          '0,0,0/256x256',
+          'jpeg',
+          200,
+          undefined,
+          /image\/jpeg/,
+        );
+        testStatic(
+          prefix,
+          '0,0,0/256x256',
+          'webp',
+          200,
+          undefined,
+          /image\/webp/,
+        );
       });
 
       describe('different parameters', function () {
@@ -60,10 +88,38 @@ describe('Static endpoints', function() {
   describe('area-based', function () {
     describe('valid requests', function () {
       describe('various formats', function () {
-        testStatic(prefix, '-180,-80,180,80/10x10', 'png', 200, undefined, /image\/png/);
-        testStatic(prefix, '-180,-80,180,80/10x10', 'jpg', 200, undefined, /image\/jpeg/);
-        testStatic(prefix, '-180,-80,180,80/10x10', 'jpeg', 200, undefined, /image\/jpeg/);
-        testStatic(prefix, '-180,-80,180,80/10x10', 'webp', 200, undefined, /image\/webp/);
+        testStatic(
+          prefix,
+          '-180,-80,180,80/10x10',
+          'png',
+          200,
+          undefined,
+          /image\/png/,
+        );
+        testStatic(
+          prefix,
+          '-180,-80,180,80/10x10',
+          'jpg',
+          200,
+          undefined,
+          /image\/jpeg/,
+        );
+        testStatic(
+          prefix,
+          '-180,-80,180,80/10x10',
+          'jpeg',
+          200,
+          undefined,
+          /image\/jpeg/,
+        );
+        testStatic(
+          prefix,
+          '-180,-80,180,80/10x10',
+          'webp',
+          200,
+          undefined,
+          /image\/webp/,
+        );
       });
 
       describe('different parameters', function () {
@@ -85,18 +141,70 @@ describe('Static endpoints', function() {
 
   describe('autofit path', function () {
     describe('valid requests', function () {
-      testStatic(prefix, 'auto/256x256', 'png', 200, undefined, /image\/png/, '?path=10,10|20,20');
+      testStatic(
+        prefix,
+        'auto/256x256',
+        'png',
+        200,
+        undefined,
+        /image\/png/,
+        '?path=10,10|20,20',
+      );
 
       describe('different parameters', function () {
-        testStatic(prefix, 'auto/20x20', 'png', 200, 2, /image\/png/, '?path=10,10|20,20');
-        testStatic(prefix, 'auto/200x200', 'png', 200, 3, /image\/png/, '?path=-10,-10|-20,-20');
+        testStatic(
+          prefix,
+          'auto/20x20',
+          'png',
+          200,
+          2,
+          /image\/png/,
+          '?path=10,10|20,20',
+        );
+        testStatic(
+          prefix,
+          'auto/200x200',
+          'png',
+          200,
+          3,
+          /image\/png/,
+          '?path=-10,-10|-20,-20',
+        );
+      });
+
+      describe('encoded path', function () {
+        testStatic(
+          prefix,
+          'auto/20x20',
+          'png',
+          200,
+          2,
+          /image\/png/,
+          '?path=' + decodeURIComponent('enc:{{biGwvyGoUi@s_A|{@'),
+        );
       });
     });
 
     describe('invalid requests return 4xx', function () {
       testStatic(prefix, 'auto/256x256', 'png', 400);
-      testStatic(prefix, 'auto/256x256', 'png', 400, undefined, undefined, '?path=10,10');
-      testStatic(prefix, 'auto/2560x2560', 'png', 400, undefined, undefined, '?path=10,10|20,20');
+      testStatic(
+        prefix,
+        'auto/256x256',
+        'png',
+        400,
+        undefined,
+        undefined,
+        '?path=invalid',
+      );
+      testStatic(
+        prefix,
+        'auto/2560x2560',
+        'png',
+        400,
+        undefined,
+        undefined,
+        '?path=10,10|20,20',
+      );
     });
   });
 });

test/style.js

@@ -1,14 +1,16 @@
-var testIs = function(url, type, status) {
-  it(url + ' return ' + (status || 200) + ' and is ' + type.toString(),
+const testIs = function (url, type, status) {
+  it(
+    url + ' return ' + (status || 200) + ' and is ' + type.toString(),
     function (done) {
       supertest(app)
         .get(url)
         .expect(status || 200)
         .expect('Content-Type', type, done);
-  });
+    },
+  );
 };
 
-var prefix = 'test-style';
+const prefix = 'test-style';
 
 describe('Styles', function () {
   describe('/styles/' + prefix + '/style.json is valid style', function () {
@@ -18,14 +20,15 @@ describe('Styles', function() {
       supertest(app)
         .get('/styles/' + prefix + '/style.json')
         .expect(function (res) {
-          res.body.version.should.equal(8);
-          res.body.name.should.be.String();
-          res.body.sources.should.be.Object();
-          res.body.glyphs.should.be.String();
-          res.body.sprite.should.be.String();
-          res.body.sprite.should.equal('/test/styles/test-style/sprite');
-          res.body.layers.should.be.Array();
-        }).end(done);
+          expect(res.body.version).to.be.equal(8);
+          expect(res.body.name).to.be.a('string');
+          expect(res.body.sources).to.be.a('object');
+          expect(res.body.glyphs).to.be.a('string');
+          expect(res.body.sprite).to.be.a('string');
+          expect(res.body.sprite).to.be.equal('/test/styles/test-style/sprite');
+          expect(res.body.layers).to.be.a('array');
+        })
+        .end(done);
     });
   });
   describe('/styles/streets/style.json is not served', function () {
@@ -43,8 +46,10 @@ describe('Styles', function() {
 describe('Fonts', function () {
   testIs('/fonts/Open Sans Bold/0-255.pbf', /application\/x-protobuf/);
   testIs('/fonts/Open Sans Regular/65280-65535.pbf', /application\/x-protobuf/);
-  testIs('/fonts/Open Sans Bold,Open Sans Regular/0-255.pbf',
-         /application\/x-protobuf/);
+  testIs(
+    '/fonts/Open Sans Bold,Open Sans Regular/0-255.pbf',
+    /application\/x-protobuf/,
+  );
   testIs('/fonts/Nonsense,Open Sans Bold/0-255.pbf', /./, 400);
 
   testIs('/fonts/Nonsense/0-255.pbf', /./, 400);

test/tiles_data.js

@@ -1,14 +1,14 @@
-var testTile = function(prefix, z, x, y, status) {
-  var path = '/data/' + prefix + '/' + z + '/' + x + '/' + y + '.pbf';
+const testTile = function (prefix, z, x, y, status) {
+  const path = '/data/' + prefix + '/' + z + '/' + x + '/' + y + '.pbf';
   it(path + ' returns ' + status, function (done) {
-    var test = supertest(app).get(path);
+    const test = supertest(app).get(path);
     if (status) test.expect(status);
     if (status == 200) test.expect('Content-Type', /application\/x-protobuf/);
     test.end(done);
   });
 };
 
-var prefix = 'openmaptiles';
+const prefix = 'openmaptiles';
 
 describe('Vector tiles', function () {
   describe('existing tiles', function () {

test/tiles_rendered.js

@@ -1,15 +1,15 @@
-var testTile = function(prefix, z, x, y, format, status, scale, type) {
+const testTile = function (prefix, z, x, y, format, status, scale, type) {
   if (scale) y += '@' + scale + 'x';
-  var path = '/styles/' + prefix + '/' + z + '/' + x + '/' + y + '.' + format;
+  const path = '/styles/' + prefix + '/' + z + '/' + x + '/' + y + '.' + format;
   it(path + ' returns ' + status, function (done) {
-    var test = supertest(app).get(path);
+    const test = supertest(app).get(path);
     test.expect(status);
     if (type) test.expect('Content-Type', type);
     test.end(done);
   });
 };
 
-var prefix = 'test-style';
+const prefix = 'test-style';
 
 describe('Raster tiles', function () {
   describe('valid requests', function () {