Move output-js to tasks/, see #1459

js/grunt/Gruntfile.js

@@ -128,9 +128,7 @@ module.exports = function( grunt ) {
   );
 
   grunt.registerTask( 'output-js', 'Outputs JS just for the specified repo',
-    wrapTask( async () => {
-      transpiler.transpileRepo( repo );
-    } )
+    wrapExecSync( `node ../chipper/js/grunt/tasks/output-js.js --repo ${repo}` )
   );
   grunt.registerTask( 'output-js-project', 'Outputs JS for the specified repo and its dependencies',
     wrapTask( async () => {
@@ -146,10 +144,6 @@ module.exports = function( grunt ) {
     } )
   );
 
-  grunt.registerTask( 'typescript-test', 'For testing typescript in our build tools', wrapTask( async () => {
-    require( './typescript-test' )();
-  } ) );
-
   grunt.registerTask( 'build',
     `Builds the repository. Depending on the repository type (runnable/wrapper/standalone), the result may vary.
 Runnable build options:

js/grunt/tasks/output-js.js

@@ -0,0 +1,13 @@
+// Copyright 2024, University of Colorado Boulder
+
+const getRequiredArg = require( './getRequiredArg' );
+
+/**
+ * @author Sam Reid (PhET Interactive Simulations)
+ */
+const Transpiler = require( '../../common/Transpiler' );
+const transpiler = new Transpiler();
+
+const repo = getRequiredArg( '--repo' );
+
+transpiler.transpileRepo( repo );