@xylabs/threads
Version:
Web workers & worker threads as simple as a function call
1 lines • 6.03 kB
Source Map (JSON)
{"version":3,"sources":["../../../src/master/get-bundle-url.browser.ts","../../../src/master/implementation.browser.ts"],"sourcesContent":["// Source: <https://github.com/parcel-bundler/parcel/blob/master/packages/core/parcel-bundler/src/builtins/bundle-url.js>\n\nlet bundleURL: string | undefined\n\nfunction getBundleURLCached(): string {\n if (!bundleURL) {\n bundleURL = getBundleURL()\n }\n\n return bundleURL\n}\n\nfunction getBundleURL(): string {\n // Attempt to find the URL of the current script and use that as the base URL\n try {\n throw new Error('getBundleURL failed')\n } catch (ex) {\n const err = ex as Error\n const matches = ('' + err.stack).match(/(https?|file|ftp|chrome-extension|moz-extension):\\/\\/[^\\n)]+/g)\n if (matches) {\n return getBaseURL(matches[0])\n }\n }\n\n return '/'\n}\n\nfunction getBaseURL(url: string): string {\n return ('' + url).replace(/^((?:https?|file|ftp|chrome-extension|moz-extension):\\/\\/.+)?\\/[^/]+(?:\\?.*)?$/, '$1') + '/'\n}\n\nexport { getBundleURLCached as getBundleURL }\n","/* eslint-disable @stylistic/max-len */\n/* eslint-disable import-x/no-internal-modules */\n// tslint:disable max-classes-per-file\n\nimport type { ImplementationExport, ThreadsWorkerOptions } from '../types/master.ts'\nimport { getBundleURL } from './get-bundle-url.browser.ts'\n\nexport const defaultPoolSize = typeof navigator !== 'undefined' && navigator.hardwareConcurrency ? navigator.hardwareConcurrency : 4\n\nconst isAbsoluteURL = (value: string) => /^[A-Za-z][\\d+.A-Za-z\\-]*:/.test(value)\n\nfunction createSourceBlobURL(code: string): string {\n const blob = new Blob([code], { type: 'application/javascript' })\n return URL.createObjectURL(blob)\n}\n\nfunction selectWorkerImplementation(): ImplementationExport {\n if (typeof Worker === 'undefined') {\n // Might happen on Safari, for instance\n // The idea is to only fail if the constructor is actually used\n return class NoWebWorker {\n constructor() {\n throw new Error(\n \"No web worker implementation available. You might have tried to spawn a worker within a worker in a browser that doesn't support workers in workers.\",\n )\n }\n } as unknown as ImplementationExport\n }\n\n class WebWorker extends Worker {\n constructor(url: string | URL, options?: ThreadsWorkerOptions) {\n if (typeof url === 'string' && options && options._baseURL) {\n url = new URL(url, options._baseURL)\n } else if (typeof url === 'string' && !isAbsoluteURL(url) && /^file:\\/\\//i.test(getBundleURL())) {\n url = new URL(url, getBundleURL().replace(/\\/[^/]+$/, '/'))\n if (options?.CORSWorkaround ?? true) {\n url = createSourceBlobURL(`importScripts(${JSON.stringify(url)});`)\n }\n }\n if (\n typeof url === 'string'\n && isAbsoluteURL(url) // Create source code blob loading JS file via `importScripts()`\n // to circumvent worker CORS restrictions\n && (options?.CORSWorkaround ?? true)\n ) {\n url = createSourceBlobURL(`importScripts(${JSON.stringify(url)});`)\n }\n super(url, options)\n }\n }\n\n class BlobWorker extends WebWorker {\n constructor(blob: Blob, options?: ThreadsWorkerOptions) {\n const url = globalThis.URL.createObjectURL(blob)\n super(url, options)\n }\n\n static fromText(source: string, options?: ThreadsWorkerOptions): WebWorker {\n const blob = new globalThis.Blob([source], { type: 'text/javascript' })\n return new BlobWorker(blob, options)\n }\n }\n\n return {\n blob: BlobWorker,\n default: WebWorker,\n }\n}\n\nlet implementation: ImplementationExport\n\nexport function getWorkerImplementation(): ImplementationExport {\n if (!implementation) {\n implementation = selectWorkerImplementation()\n }\n return implementation\n}\n\nexport function isWorkerRuntime() {\n const isWindowContext = typeof globalThis !== 'undefined' && typeof Window !== 'undefined' && globalThis instanceof Window\n return typeof globalThis !== 'undefined' && self['postMessage'] && !isWindowContext ? true : false\n}\n"],"mappings":";AAEA,IAAI;AAEJ,SAAS,qBAA6B;AACpC,MAAI,CAAC,WAAW;AACd,gBAAY,aAAa;AAAA,EAC3B;AAEA,SAAO;AACT;AAEA,SAAS,eAAuB;AAE9B,MAAI;AACF,UAAM,IAAI,MAAM,qBAAqB;AAAA,EACvC,SAAS,IAAI;AACX,UAAM,MAAM;AACZ,UAAM,WAAW,KAAK,IAAI,OAAO,MAAM,+DAA+D;AACtG,QAAI,SAAS;AACX,aAAO,WAAW,QAAQ,CAAC,CAAC;AAAA,IAC9B;AAAA,EACF;AAEA,SAAO;AACT;AAEA,SAAS,WAAW,KAAqB;AACvC,UAAQ,KAAK,KAAK,QAAQ,kFAAkF,IAAI,IAAI;AACtH;;;ACtBO,IAAM,kBAAkB,OAAO,cAAc,eAAe,UAAU,sBAAsB,UAAU,sBAAsB;AAEnI,IAAM,gBAAgB,CAAC,UAAkB,4BAA4B,KAAK,KAAK;AAE/E,SAAS,oBAAoB,MAAsB;AACjD,QAAM,OAAO,IAAI,KAAK,CAAC,IAAI,GAAG,EAAE,MAAM,yBAAyB,CAAC;AAChE,SAAO,IAAI,gBAAgB,IAAI;AACjC;AAEA,SAAS,6BAAmD;AAC1D,MAAI,OAAO,WAAW,aAAa;AAGjC,WAAO,MAAM,YAAY;AAAA,MACvB,cAAc;AACZ,cAAM,IAAI;AAAA,UACR;AAAA,QACF;AAAA,MACF;AAAA,IACF;AAAA,EACF;AAAA,EAEA,MAAM,kBAAkB,OAAO;AAAA,IAC7B,YAAY,KAAmB,SAAgC;AAC7D,UAAI,OAAO,QAAQ,YAAY,WAAW,QAAQ,UAAU;AAC1D,cAAM,IAAI,IAAI,KAAK,QAAQ,QAAQ;AAAA,MACrC,WAAW,OAAO,QAAQ,YAAY,CAAC,cAAc,GAAG,KAAK,cAAc,KAAK,mBAAa,CAAC,GAAG;AAC/F,cAAM,IAAI,IAAI,KAAK,mBAAa,EAAE,QAAQ,YAAY,GAAG,CAAC;AAC1D,YAAI,SAAS,kBAAkB,MAAM;AACnC,gBAAM,oBAAoB,iBAAiB,KAAK,UAAU,GAAG,CAAC,IAAI;AAAA,QACpE;AAAA,MACF;AACA,UACE,OAAO,QAAQ,YACZ,cAAc,GAAG,MAEhB,SAAS,kBAAkB,OAC/B;AACA,cAAM,oBAAoB,iBAAiB,KAAK,UAAU,GAAG,CAAC,IAAI;AAAA,MACpE;AACA,YAAM,KAAK,OAAO;AAAA,IACpB;AAAA,EACF;AAAA,EAEA,MAAM,mBAAmB,UAAU;AAAA,IACjC,YAAY,MAAY,SAAgC;AACtD,YAAM,MAAM,WAAW,IAAI,gBAAgB,IAAI;AAC/C,YAAM,KAAK,OAAO;AAAA,IACpB;AAAA,IAEA,OAAO,SAAS,QAAgB,SAA2C;AACzE,YAAM,OAAO,IAAI,WAAW,KAAK,CAAC,MAAM,GAAG,EAAE,MAAM,kBAAkB,CAAC;AACtE,aAAO,IAAI,WAAW,MAAM,OAAO;AAAA,IACrC;AAAA,EACF;AAEA,SAAO;AAAA,IACL,MAAM;AAAA,IACN,SAAS;AAAA,EACX;AACF;AAEA,IAAI;AAEG,SAAS,0BAAgD;AAC9D,MAAI,CAAC,gBAAgB;AACnB,qBAAiB,2BAA2B;AAAA,EAC9C;AACA,SAAO;AACT;AAEO,SAAS,kBAAkB;AAChC,QAAM,kBAAkB,OAAO,eAAe,eAAe,OAAO,WAAW,eAAe,sBAAsB;AACpH,SAAO,OAAO,eAAe,eAAe,KAAK,aAAa,KAAK,CAAC,kBAAkB,OAAO;AAC/F;","names":[]}