Add ECMAScript linter

Author: tvdijen

.github/workflows/eslinter.yml

@@ -0,0 +1,30 @@
+---
+
+on:  # yamllint disable-line rule:truthy
+  workflow_call:
+    inputs:
+      repository:
+        description: 'The repository that needs linting'
+        type: string
+        default: ${{ github.repository }}
+        required: false
+      ref:
+        description: 'The branch, tag or SHA that needs linting'
+        type: string
+        required: false
+        default: ${{ github.ref }}
+
+jobs:
+  linter:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          repository: ${{ inputs.repository }}
+          ref: ${{ inputs.ref }}
+
+      - name: Lint ECMAScript
+        run: eslint . --ext .js