Dev version based on time

.github/workflows/publish.yml

@@ -18,7 +18,7 @@ jobs:
         run: npm ci
       - name: Publish
         run: |
-          VERSION=$(npx semver $(npm view ol@dev version) --increment prerelease --preid dev)
+          VERSION=$(node tasks/next-dev-version.js)
           npm --no-git-tag-version version ${VERSION}
           npm run build-package
           cd build/ol

tasks/next-dev-version.js

@@ -0,0 +1,14 @@
+const version = require('../package.json').version;
+const semver = require('semver');
+
+function nextVersion() {
+  const s = semver.parse(version);
+  if (!s) {
+    throw new Error(`Invalid version ${version}`);
+  }
+  return `${s.major}.${s.minor}.${s.patch}-dev.${Date.now()}`;
+}
+
+if (require.main === module) {
+  process.stdout.write(`${nextVersion()}\n`);
+}