| 1 | {"version":3,"sources":["asynciterable/fromdomstream.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,cAAc,EAAE,MAAM,kBAAkB,CAAC;AAElD,cAAc;AACd,MAAM,cAAc,GAAG,OAAO,iBAAiB,KAAK,WAAW,CAAC,CAAC,CAAC,iBAAiB,CAAC,CAAC,CAAC,WAAW,CAAC;AAElG,MAAM,OAAO,2BAA+B,SAAQ,cAA6B;IAC/E,YAAsB,OAA0B;QAC9C,KAAK,EAAE,CAAC;QADY,YAAO,GAAP,OAAO,CAAmB;IAEhD,CAAC;IACD,CAAC,MAAM,CAAC,aAAa,CAAC;QACpB,MAAM,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC;QAC5B,MAAM,MAAM,GAAG,MAAM,CAAC,WAAW,CAAC,EAAE,CAAC;QACrC,OAAO,cAAc,CAAC,MAAM,EAAE,MAAM,EAAE,4BAA4B,CAAC,MAAM,CAAC,CAAC,CAAC;IAC9E,CAAC;CACF;AAED,MAAM,OAAO,+BAAgC,SAAQ,2BAAuC;IAC1F,CAAC,MAAM,CAAC,aAAa,CAAC;QACpB,MAAM,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC;QAC5B,IAAI,MAAgC,CAAC;QACrC,IAAI;YACF,MAAM,GAAG,MAAM,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,EAAE,MAAM,EAAE,CAAC,CAAC;SAChD;QAAC,OAAO,CAAC,EAAE;YACV,OAAO,KAAK,CAAC,MAAM,CAAC,aAAa,CAAC,EAAE,CAAC;SACtC;QACD,MAAM,QAAQ,GAAG,cAAc,CAAC,MAAM,EAAE,MAAM,EAAE,yBAAyB,CAAC,MAAM,CAAC,CAAC,CAAC;QACnF,4FAA4F;QAC5F,QAAQ,CAAC,IAAI,EAAE,CAAC;QAChB,OAAO,QAAQ,CAAC;IAClB,CAAC;CACF;AAED,KAAK,SAAS,CAAC,CAAC,cAAc,CAC5B,MAAyB,EACzB,MAA8D,EAC9D,QAA2B;IAE3B,IAAI,KAAK,GAAG,KAAK,CAAC;IAClB,IAAI;QACF,KAAK,CAAC,CAAC,QAAQ,CAAC;KACjB;IAAC,OAAO,CAAC,EAAE;QACV,IAAI,CAAC,KAAK,GAAG,IAAI,CAAC,IAAI,MAAM,EAAE;YAC5B,MAAM,MAAM,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC,CAAC;SAC3B;KACF;YAAS;QACR,IAAI,CAAC,MAAM,EAAE;YACX,OAAO;SACR;QACD,IAAI,CAAC,KAAK,EAAE;YACV,MAAM,MAAM,CAAC,QAAQ,CAAC,EAAE,CAAC;SAC1B;QACD,IAAI,MAAM,CAAC,MAAM,EAAE;YACjB,IAAI;gBACF,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC,GAAG,EAAE;oBACvB,KAAK;gBACP,CAAC,CAAC,CAAC;gBACH,MAAM,CAAC,WAAW,EAAE,CAAC;aACtB;YAAC,OAAO,CAAC,EAAE;gBACV,KAAK;aACN;SACF;KACF;AACH,CAAC;AAED,cAAc;AACd,KAAK,SAAS,CAAC,CAAC,4BAA4B,CAAU,MAAsC;IAC1F,IAAI,CAA8B,CAAC;IACnC,OAAO,CAAC,CAAC,CAAC,GAAG,MAAM,MAAM,CAAC,IAAI,EAAE,CAAC,CAAC,IAAI,EAAE;QACtC,MAAM,CAAC,CAAC,KAAK,CAAC;KACf;AACH,CAAC;AAED,cAAc;AACd,KAAK,SAAS,CAAC,CAAC,yBAAyB,CAAC,MAAgC;IACxE,IAAI,CAAuC,CAAC;IAC5C,IAAI,KAAK,GAA6B,MAAM,IAAK,CAAC;IAClD,OAAO,CAAC,CAAC,CAAC,GAAG,MAAM,QAAQ,CAAC,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC,CAAC,IAAI,EAAE;QACnD,KAAK,GAAG,MAAM,CAAC,CAAC,KAAK,CAAC;KACvB;AACH,CAAC;AAED,cAAc;AACd,KAAK,UAAU,QAAQ,CACrB,MAAgC,EAChC,WAAqC,EACrC,MAAc;IAEd,IAAI,IAAY,CAAC;IACjB,IAAI,MAAuB,CAAC;IAE5B,IAAI,OAAO,WAAW,KAAK,QAAQ,EAAE;QACnC,MAAM,GAAG,IAAI,WAAW,CAAC,CAAC,IAAI,GAAG,WAAW,CAAC,CAAC,CAAC;KAChD;SAAM,IAAI,WAAW,YAAY,WAAW,EAAE;QAC7C,IAAI,GAAG,CAAC,MAAM,GAAG,WAAW,CAAC,CAAC,UAAU,CAAC;KAC1C;SAAM,IAAI,WAAW,YAAY,cAAc,EAAE;QAChD,IAAI,GAAG,CAAC,MAAM,GAAG,WAAW,CAAC,CAAC,UAAU,CAAC;KAC1C;SAAM;QACL,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,SAAU,EAAE,CAAC;KAC1C;IAED,OAAO,MAAM,QAAQ,CAAC,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,IAAI,CAAC,CAAC;AACtD,CAAC;AAED,cAAc;AACd,KAAK,UAAU,QAAQ,CACrB,MAAgC,EAChC,MAAuB,EACvB,MAAc,EACd,IAAY;IAEZ,IAAI,WAAW,GAAG,MAAM,CAAC;IACzB,IAAI,WAAW,IAAI,IAAI,EAAE;QACvB,OAAO,EAAE,IAAI,EAAE,KAAK,EAAE,KAAK,EAAE,IAAI,UAAU,CAAC,MAAM,EAAE,CAAC,EAAE,IAAI,CAAC,EAAE,CAAC;KAChE;IACD,MAAM,EAAE,IAAI,EAAE,KAAK,EAAE,GAAG,MAAM,MAAM,CAAC,IAAI,CACvC,IAAI,UAAU,CAAC,MAAM,EAAE,WAAW,EAAE,IAAI,GAAG,WAAW,CAAC,CACxD,CAAC;IACF,IAAI,CAAC,WAAW,IAAI,KAAM,CAAC,UAAU,CAAC,GAAG,IAAI,IAAI,CAAC,IAAI,EAAE;QACtD,OAAO,MAAM,QAAQ,CAAC,MAAM,EAAE,KAAM,CAAC,MAAM,EAAE,WAAW,EAAE,IAAI,CAAC,CAAC;KACjE;IACD,OAAO,EAAE,IAAI,EAAE,KAAK,EAAE,IAAI,UAAU,CAAC,KAAM,CAAC,MAAM,EAAE,CAAC,EAAE,WAAW,CAAC,EAAE,CAAC;AACxE,CAAC;AAyBD;;;;;;;GAOG;AACH,MAAM,UAAU,aAAa,CAAC,MAAsB,EAAE,OAA0B;IAC9E,OAAO,CAAC,OAAO,IAAI,OAAO,CAAC,IAAI,KAAK,MAAM;QACxC,CAAC,CAAC,IAAI,2BAA2B,CAAC,MAAM,CAAC;QACzC,CAAC,CAAC,IAAI,+BAA+B,CAAC,MAAM,CAAC,CAAC;AAClD,CAAC","file":"fromdomstream.js","sourcesContent":["import { AsyncIterableX } from './asynciterablex';\n\n/** @ignore */\nconst SharedArrayBuf = typeof SharedArrayBuffer !== 'undefined' ? SharedArrayBuffer : ArrayBuffer;\n\nexport class AsyncIterableReadableStream<T> extends AsyncIterableX<T | undefined> {\n constructor(protected _stream: ReadableStream<T>) {\n super();\n }\n [Symbol.asyncIterator]() {\n const stream = this._stream;\n const reader = stream['getReader']();\n return _consumeReader(stream, reader, defaultReaderToAsyncIterator(reader));\n }\n}\n\nexport class AsyncIterableReadableByteStream extends AsyncIterableReadableStream<Uint8Array> {\n [Symbol.asyncIterator]() {\n const stream = this._stream;\n let reader: ReadableStreamBYOBReader;\n try {\n reader = stream['getReader']({ mode: 'byob' });\n } catch (e) {\n return super[Symbol.asyncIterator]();\n }\n const iterator = _consumeReader(stream, reader, byobReaderToAsyncIterator(reader));\n // \"pump\" the iterator once so it initializes and is ready to accept a buffer or bytesToRead\n iterator.next();\n return iterator;\n }\n}\n\nasync function* _consumeReader<T>(\n stream: ReadableStream<T>,\n reader: ReadableStreamBYOBReader | ReadableStreamDefaultReader,\n iterator: AsyncGenerator<T>\n): AsyncIterator<T, any, undefined> {\n let threw = false;\n try {\n yield* iterator;\n } catch (e) {\n if ((threw = true) && reader) {\n await reader['cancel'](e);\n }\n } finally {\n if (!reader) {\n return;\n }\n if (!threw) {\n await reader['cancel']();\n }\n if (stream.locked) {\n try {\n reader.closed.catch(() => {\n /* */\n });\n reader.releaseLock();\n } catch (e) {\n /* */\n }\n }\n }\n}\n\n/** @ignore */\nasync function* defaultReaderToAsyncIterator<T = any>(reader: ReadableStreamDefaultReader<T>) {\n let r: ReadableStreamReadResult<T>;\n while (!(r = await reader.read()).done) {\n yield r.value;\n }\n}\n\n/** @ignore */\nasync function* byobReaderToAsyncIterator(reader: ReadableStreamBYOBReader) {\n let r: ReadableStreamReadResult<Uint8Array>;\n let value: number | ArrayBufferLike = yield null!;\n while (!(r = await readNext(reader, value, 0)).done) {\n value = yield r.value;\n }\n}\n\n/** @ignore */\nasync function readNext(\n reader: ReadableStreamBYOBReader,\n bufferOrLen: ArrayBufferLike | number,\n offset: number\n): Promise<ReadableStreamReadResult<Uint8Array>> {\n let size: number;\n let buffer: ArrayBufferLike;\n\n if (typeof bufferOrLen === 'number') {\n buffer = new ArrayBuffer((size = bufferOrLen));\n } else if (bufferOrLen instanceof ArrayBuffer) {\n size = (buffer = bufferOrLen).byteLength;\n } else if (bufferOrLen instanceof SharedArrayBuf) {\n size = (buffer = bufferOrLen).byteLength;\n } else {\n return { done: true, value: undefined! };\n }\n\n return await readInto(reader, buffer, offset, size);\n}\n\n/** @ignore */\nasync function readInto(\n reader: ReadableStreamBYOBReader,\n buffer: ArrayBufferLike,\n offset: number,\n size: number\n): Promise<ReadableStreamReadResult<Uint8Array>> {\n let innerOffset = offset;\n if (innerOffset >= size) {\n return { done: false, value: new Uint8Array(buffer, 0, size) };\n }\n const { done, value } = await reader.read(\n new Uint8Array(buffer, innerOffset, size - innerOffset)\n );\n if ((innerOffset += value!.byteLength) < size && !done) {\n return await readInto(reader, value!.buffer, innerOffset, size);\n }\n return { done, value: new Uint8Array(value!.buffer, 0, innerOffset) };\n}\n\n/**\n * Creates an async-iterable from an existing DOM stream.\n *\n * @export\n * @template TSource The type of elements in the source DOM stream.\n * @param {ReadableStream<TSource>} stream The DOM Readable stream to convert to an async-iterable.\n * @returns {AsyncIterableX<TSource>} An async-iterable containing the elements from the ReadableStream.\n */\nexport function fromDOMStream<TSource>(stream: ReadableStream<TSource>): AsyncIterableX<TSource>;\n/**\n * Creates an async-iterable from an existing DOM stream and options.\n *\n * @export\n * @template TSource * @template TSource The type of elements in the source DOM stream.\n * @param {ReadableStream<TSource>} stream The readable stream to convert to an async-iterable.\n * @param {{ mode: 'byob' }} options The options to set the mode for the DOM stream.\n * @returns {AsyncIterableX<TSource>} An async-iterable created from the incoming async-iterable.\n */\nexport function fromDOMStream<TSource extends ArrayBufferView>(\n stream: ReadableStream<TSource>,\n options: { mode: 'byob' }\n): AsyncIterableX<TSource>;\n\n/**\n * Creates an async-iterable from an existing DOM stream and optional options.\n *\n * @export\n * @param {ReadableStream} stream The readable stream to convert to an async-iterable.\n * @param {{ mode: 'byob' }} [options] The optional options to set the mode for the DOM stream.\n * @returns {AsyncIterableX<any>} An async-iterable created from the incoming async-iterable.\n */\nexport function fromDOMStream(stream: ReadableStream, options?: { mode: 'byob' }) {\n return !options || options.mode !== 'byob'\n ? new AsyncIterableReadableStream(stream)\n : new AsyncIterableReadableByteStream(stream);\n}\n"]} |