ci: add GitHub Actions workflow for linting, building, and testing (#402)

* ci: add GitHub Actions workflow for linting, building, and testing

- Run on pull requests and pushes to gh-pages/main branches
- Test against Node 18.x and 20.x
- Steps: lint (eslint), build (webpack), test (jest)
- Use npm ci for reproducible dependency installation
- Cache npm dependencies for faster builds

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* ci: update Node.js versions to 22, 24, and latest

- Changed matrix from 18.x, 20.x to 22.x, 24.x, and latest
- Ensures testing with modern Node.js releases

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* ci: add eslint dependency and update configuration

- Add eslint to devDependencies
- Update .eslintrc to use modern rule names (keyword-spacing instead of space-after-keywords)
- Add parserOptions for ES2021 compatibility
- Fix code formatting issues: indentation, spacing, brace style
- Add eslint-disable comments for intentional null comparisons in polyfill

All linting checks now pass with 'npm run test:lint'

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* ci: fix workflow trigger scope and address review feedback

- Add branches filter to pull_request trigger (gh-pages, main)
- Ensures CI only runs on PRs targeting these branches
- ESLint dependency added in separate commit (f1608f7)

Addresses review feedback on PR #402

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: DennisOSRM

.eslintrc

@@ -1,7 +1,12 @@
 {
   "env": {
     "node": true,
-    "browser": true
+    "browser": true,
+    "es2021": true
+  },
+  "parserOptions": {
+    "ecmaVersion": 2021,
+    "sourceType": "module"
   },
   "globals": {
     "L": true
@@ -10,7 +15,7 @@
     "indent": [2, 2],
     "comma-dangle": [2, "never"],
     "space-before-blocks": 2,
-    "space-after-keywords": 2,
+    "keyword-spacing": 2,
     "space-unary-ops": 2,
     "no-use-before-define": [2, "nofunc"],
     "camelcase": 0,

.github/workflows/ci.yml

@@ -0,0 +1,41 @@
+name: CI Checks
+
+on:
+  pull_request:
+    branches:
+      - gh-pages
+      - main
+  push:
+    branches:
+      - gh-pages
+      - main
+
+jobs:
+  lint-and-test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [22.x, 24.x, latest]
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run linting
+        run: npm run test:lint
+
+      - name: Build code
+        run: npm run build
+
+      - name: Run tests
+        run: npm test

i18n/da.js

@@ -15,5 +15,5 @@ module.exports = {
   'Via point - press enter to drop marker': 'Via - tryk for at placere delmålspunkt',
   'Bike': 'Cykel',
   'Car': 'Bil',
-  'Foot': 'Til fods',
+  'Foot': 'Til fods'
 };

i18n/de.js

@@ -15,5 +15,5 @@ module.exports = {
   'Via point - press enter to drop marker': 'Zwischenstop - drücken um einen Marker zu plazieren',
   'Bike': 'Fahrrad',
   'Car': 'Auto',
-  'Foot': 'Fussgänger',
+  'Foot': 'Fussgänger'
 };

i18n/en.js

@@ -15,5 +15,5 @@ module.exports = {
   'Via point - press enter to drop marker': 'Via point - press enter to drop marker',
   'Bike': 'Bike',
   'Car': 'Car',
-  'Foot': 'Foot',
+  'Foot': 'Foot'
 };

i18n/es.js

@@ -15,5 +15,5 @@ module.exports = {
   'Via point - press enter to drop marker': 'Punto en la vía - presione enter para colocar un marcador',
   'Bike': 'Bicicleta',
   'Car': 'Coche',
-  'Foot': 'Peatón',
+  'Foot': 'Peatón'
 };

i18n/fr.js

@@ -15,5 +15,5 @@ module.exports = {
   'Via point - press enter to drop marker': 'Étape intermédiaire - appuyez sur Entrée pour placer le marqueur',
   'Bike': 'Vélo',
   'Car': 'Voiture',
-  'Foot': 'Piéton',
+  'Foot': 'Piéton'
 };

i18n/it.js

@@ -15,5 +15,5 @@ module.exports = {
   'Via point - press enter to drop marker': 'Punto di passaggio - premere invio per rilasciare un marcatore',
   'Bike': 'Bicicletta',
   'Car': 'Auto',
-  'Foot': 'A piedi',
+  'Foot': 'A piedi'
 };