| /** |
| * @license |
| * Copyright 2022 Google LLC |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /** |
| * We cannot import the worker script from cdn directly, because that is |
| * creating cross-origin issues. Instead we have to create a worker script on |
| * the fly and pull the actual worker via `importScripts()`. Apparently that |
| * is a well established pattern. |
| */ |
| function wrapUrl(url: string) { |
| const content = `importScripts("${url}");`; |
| return URL.createObjectURL(new Blob([content], {type: 'text/javascript'})); |
| } |
| |
| export function createWorker(workerUrl: string): Worker { |
| return new Worker(wrapUrl(workerUrl)); |
| } |
