Build: Drop support for Node 10

Ref gh-2249

.github/workflows/node.js.yml

@@ -133,31 +133,3 @@ jobs:
 
       - name: Test
         run: npm run test:unit -- -b safari --jquery ${{ matrix.JQUERY }} --retries 3
-
-  legacy-build:
-    runs-on: ubuntu-latest
-    name: Build on Node 10.x
-    env:
-      NODE_VERSION: 10.x
-    steps:
-      - name: Checkout
-        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
-
-      - name: Use Node.js ${{ env.NODE_VERSION }}
-        uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2
-        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 npm dependencies
-        run: npm install
-
-      - name: Build
-        run: npm run build

Gruntfile.js

@@ -84,15 +84,6 @@ const htmllintBad = [
 	"tests/unit/tabs/data/test.html"
 ];
 
-const nodeV16OrNewer = !/^v1[0-5]\./.test( process.version );
-
-// Support: Node.js <16
-// Skip running tasks that dropped support for Node.js 10-15
-// in this Node version.
-function runIfNewNode( task ) {
-	return nodeV16OrNewer ? task : "print_old_node_message:" + task;
-}
-
 function mapMinFile( file ) {
 	return "dist/" + file.replace( /ui\//, "minified/" );
 }
@@ -357,13 +348,7 @@ grunt.initConfig( {
 } );
 
 // grunt plugins
-require( "load-grunt-tasks" )( grunt, {
+require( "load-grunt-tasks" )( grunt );
-	pattern: nodeV16OrNewer ? [ "grunt-*" ] : [
-		"grunt-*",
-		"!grunt-eslint",
-		"!grunt-html"
-	]
-} );
 
 // local tasks
 grunt.loadTasks( "build/tasks" );
@@ -406,9 +391,9 @@ grunt.registerTask( "print_old_node_message", ( ...args ) => {
 // Keep this task list in sync with the testing steps in our GitHub action test workflow file!
 grunt.registerTask( "lint", [
 	"asciilint",
-	runIfNewNode( "eslint" ),
+	"eslint",
 	"csslint",
-	runIfNewNode( "htmllint" )
+	"htmllint"
 ] );
 grunt.registerTask( "build", [ "requirejs", "concat" ] );
 grunt.registerTask( "default", [ "lint", "build" ] );