larry babby and threejs for glsl

webGl/my-threejs-test/node_modules/@parcel/workers/lib/backend.js

@@ -0,0 +1,34 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.detectBackend = detectBackend;
+exports.getWorkerBackend = getWorkerBackend;
+function detectBackend() {
+  // $FlowFixMe
+  if (process.browser) return 'web';
+  switch (process.env.PARCEL_WORKER_BACKEND) {
+    case 'threads':
+    case 'process':
+      return process.env.PARCEL_WORKER_BACKEND;
+  }
+  try {
+    require('worker_threads');
+    return 'threads';
+  } catch (err) {
+    return 'process';
+  }
+}
+function getWorkerBackend(backend) {
+  switch (backend) {
+    case 'threads':
+      return require('./threads/ThreadsWorker').default;
+    case 'process':
+      return require('./process/ProcessWorker').default;
+    case 'web':
+      return require('./web/WebWorker').default;
+    default:
+      throw new Error(`Invalid backend: ${backend}`);
+  }
+}