Tests: Run tests in Edge in IE mode in GitHub Actions

While Edge in IE mode is not guaranteed to match IE 11 in every aspect,
in practice it generally does. Testing in this mode in GitHub Actions
will allow us to catch most IE-breaking issues at the PR level.

This change also adds missing npm scripts: `test:chrome`, `test:edge`
& `test:ie`.

Closes gh-5540

1 files changed, 28 insertions, 0 deletions

diff --git a/.github/workflows/node.js.yml b/.github/workflows/node.js.yml
index 4b387cbe7..36dcf9367 100644
--- a/.github/workflows/node.js.yml
+++ b/.github/workflows/node.js.yml
@@ -87,6 +87,34 @@ jobs:
       - name: Run tests
         run: npm run ${{ matrix.NPM_SCRIPT }}
 
+  ie:
+    runs-on: windows-latest
+    env:
+      NODE_VERSION: 20.x
+    name: test:ie - IE
+    steps:
+      - name: Checkout
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+
+      - name: Use Node.js ${{ env.NODE_VERSION }}
+        uses: actions/setup-node@1e60f620b9541d16bece96c5465dc8ee9832be0b # v4.0.3
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Cache
+        uses: actions/cache@0c45773b623bea8c8e75f6c82b208c3cf94ea4f9 # v4.0.2
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ env.NODE_VERSION }}-npm-lock-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-${{ env.NODE_VERSION }}-npm-lock-
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Run tests in Edge in IE mode
+        run: npm run test:ie
+
   safari:
     runs-on: macos-latest
     env: