Convert to TypeScript, see #1465

js/grunt/buildRunnable.ts

@@ -15,6 +15,7 @@ import getInitializationScript from './getInitializationScript';
 import packageXHTML from './packageXHTML';
 import reportUnusedStrings from './reportUnusedStrings';
 import getDependencies from './getDependencies';
+import getLocalesFromRepository from './getLocalesFromRepository';
 
 const assert = require( 'assert' );
 const ChipperStringUtils = require( '../common/ChipperStringUtils' );
@@ -23,7 +24,7 @@ const copyDirectory = require( './copyDirectory' );
 const copySupplementalPhetioFiles = require( './copySupplementalPhetioFiles' );
 const getA11yViewHTMLFromTemplate = require( './getA11yViewHTMLFromTemplate' );
 const getAllThirdPartyEntries = require( './getAllThirdPartyEntries' );
-const getLocalesFromRepository = require( './getLocalesFromRepository' );
+
 const getPhetLibs = require( './getPhetLibs' );
 const getPreloads = require( './getPreloads' );
 const getPrunedLocaleData = require( './getPrunedLocaleData' );

js/grunt/buildStandalone.ts

@@ -8,6 +8,7 @@
 
 import webpackBuild from './webpackBuild';
 import IntentionalAny from '../../../phet-core/js/types/IntentionalAny.ts';
+import getLocalesFromRepository from './getLocalesFromRepository';
 
 const assert = require( 'assert' );
 const fs = require( 'fs' );
@@ -16,7 +17,7 @@ const minify = require( './minify' );
 const _ = require( 'lodash' );
 const getStringMap = require( './getStringMap' );
 const ChipperConstants = require( '../common/ChipperConstants' );
-const getLocalesFromRepository = require( './getLocalesFromRepository' );
+
 const getPhetLibs = require( './getPhetLibs' );
 
 /**

js/grunt/getLocalesFromRepository.js → js/grunt/getLocalesFromRepository.ts

@@ -1,28 +1,24 @@
 // Copyright 2017-2024, University of Colorado Boulder
 
-/**
- * @author Chris Malley (PixelZoom, Inc.)
- * @author Jonathan Olson <jonathan.olson@colorado.edu>
- */
-
-
 const assert = require( 'assert' );
 const grunt = require( 'grunt' );
 
-/*
+/**
  * Gets the locales from a repository, by inspecting the names of the string files in babel for that repository.
- * @public
  *
- * @param {string} repo - name of the repository to get locales from
+ * @param repo - name of the repository to get locales from
+ *
+ * @author Chris Malley (PixelZoom, Inc.)
+ * @author Jonathan Olson <jonathan.olson@colorado.edu>
  */
-module.exports = function( repo ) {
+export default function( repo: string ): string[] {
 
   // confirm that the repository has a strings directory
   const stringsDirectory = `../babel/${repo}`;
   assert( grunt.file.isDir(), `${stringsDirectory} is not a directory` );
 
   // Get names of string files.
-  const stringFiles = grunt.file.expand( `${stringsDirectory}/${repo}-strings_*.json` );
+  const stringFiles: string[] = grunt.file.expand( `${stringsDirectory}/${repo}-strings_*.json` );
 
   // Don't fail out if there are no string files, as this is a normal condition when building new simulations
   if ( stringFiles.length === 0 ) {
@@ -38,4 +34,4 @@ module.exports = function( repo ) {
   assert( locales.length > 0, `no locales found in ${stringsDirectory}` );
 
   return locales;
-};
+}

js/grunt/tasks/generate-used-strings-file.ts

@@ -2,11 +2,12 @@
 
 import getRepo from '../../../../perennial-alias/js/grunt/tasks/util/getRepo';
 import webpackBuild from '../webpackBuild';
+import getLocalesFromRepository from '../getLocalesFromRepository';
 
 const getPhetLibs = require( '../getPhetLibs' );
 const fs = require( 'fs' );
 const ChipperConstants = require( '../../common/ChipperConstants' );
-const getLocalesFromRepository = require( '../getLocalesFromRepository' );
+
 const getStringMap = require( '../getStringMap' );
 
 /**