Remove JavaScript unit tests, they are not used

.github/workflows/tests.yml

@@ -6,12 +6,9 @@ on:
     # Check all PR
 
 jobs:
-  # Javascript tests and linting
+  # Javascript linting
   npm-test:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        node-version: ['18.x', '20.x', '21.x']
     steps:
       - uses: actions/checkout@v3
         # we need the full history to be able to get the chemiscope version with
@@ -20,22 +17,15 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-node@v3
         with:
-          node-version: ${{ matrix.node-version }}
+          node-version: '21.x'
           cache: 'npm'
 
       - name: configure access to git repositories in package-lock.json
         run: git config --global url."https://github.com/".insteadOf ssh://[email protected]
-
       - name: install npm dependencies
         run: npm ci
-
       - run: npm run build
-
-      - run: sudo apt-get install xvfb
-
-      # use xvfb to run the tests with a pseudo-display attached
-      # so that the browsers started by karma think there is a screen
-      - run: xvfb-run --auto-servernum npm test
+      - run: npm test
 
   # Python unit tests
   python-test:

package.json

@@ -26,9 +26,7 @@
     "url": "git+https://github.com/lab-cosmo/chemiscope.git"
   },
   "scripts": {
-    "test": "npm run test:karma && npm run test:lint",
-    "test:karma": "karma start",
-    "test:lint": "eslint src && prettier --check src",
+    "test": "eslint src && prettier --check src",
     "build": "rimraf dist && webpack --mode production --config webpack.config.ts && npm run merge-dts",
     "build:nbextension": "webpack --mode production --config python/webpack.config.nbextension.ts",
     "build:labextension": "npm run build && jupyter labextension build .",
@@ -45,11 +43,8 @@
     "@jupyter-widgets/base": "^2 || ^3 || ^4 || ^5 || ^6",
     "@jupyterlab/builder": "^4",
     "@popperjs/core": "^2.11.2",
-    "@types/chai": "^4",
     "@types/jquery": "^3.5",
-    "@types/karma": "^6",
     "@types/markdown-it": "^14",
-    "@types/mocha": "^10",
     "@types/node": "^20",
     "@types/pako": "^2",
     "@types/plotly.js": "^2.12",
@@ -61,7 +56,6 @@
     "bootstrap": "^5",
     "bubleify": "^2.0.0",
     "buffer": "^6",
-    "chai": "^4",
     "construct-style-sheets-polyfill": "^3.1.0",
     "color-parse": "^1",
     "css-loader": "^7",
@@ -71,17 +65,9 @@
     "eslint-plugin-prettier": "^5",
     "ify-loader": "^1.1",
     "jquery": "^3.6",
-    "karma": "^6.3.16",
-    "karma-chrome-launcher": "^3.1",
-    "karma-detect-browsers": "^2.3",
-    "karma-firefox-launcher": "^2.1",
-    "karma-mocha": "^2.0",
-    "karma-safari-applescript-launcher": "^0.1",
-    "karma-webpack": "https://github.com/ryanclark/karma-webpack/archive/ef7edb6b6756fb563871eaff88ca876892694896.tar.gz",
     "less": "^4.1",
     "less-loader": "^12",
     "markdown-it": "^14",
-    "mocha": "^10",
     "node-loader": "^2",
     "pako": "^2",
     "plausible-tracker": "^0.3.8",