apply nested eslint configs for entry points (allowing floating promi…

…ses), phetsims/chipper#1483

js/grunt/tasks/doc-dot.ts

@@ -91,4 +91,7 @@ let html = template.replace( '{{API_INDEX}}', indexHTML ).replace( '{{API_CONTEN
 
 html = beautify_html( html, { indent_size: 2 } );
 
-fs.writeFileSync( 'doc/index.html', html );
+fs.writeFileSync( 'doc/index.html', html );
+
+// TODO: Why does this not fail lint in Webstorm? Rename grunt/tasks/eslint.config.mjs and it fails correctly. https://github.com/phetsims/chipper/issues/1483
+// (async()=>{})();

js/grunt/tasks/eslint.config.mjs

@@ -0,0 +1,16 @@
+// Copyright 2024, University of Colorado Boulder
+
+/**
+ * ESLint configuration for grunt tasks.
+ *
+ * @author Sam Reid (PhET Interactive Simulations)
+ * @author Michael Kauzmann (PhET Interactive Simulations)
+ */
+
+import allowFloatingPromises from '../../../../perennial-alias/js/eslint/config/util/allowFloatingPromises.mjs';
+import eslintConfig from '../eslint.config.mjs';
+
+export default [
+  ...eslintConfig,
+  ...allowFloatingPromises
+];