@azure/core-rest-pipeline
Version:
Isomorphic client library for making HTTP requests in node.js and browser.
91 lines • 3.36 kB
JavaScript
;
// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
Object.defineProperty(exports, "__esModule", { value: true });
exports.concat = concat;
const tslib_1 = require("tslib");
const node_stream_1 = require("node:stream");
const typeGuards_js_1 = require("./typeGuards.js");
const file_js_1 = require("./file.js");
function streamAsyncIterator() {
return tslib_1.__asyncGenerator(this, arguments, function* streamAsyncIterator_1() {
const reader = this.getReader();
try {
while (true) {
const { done, value } = yield tslib_1.__await(reader.read());
if (done) {
return yield tslib_1.__await(void 0);
}
yield yield tslib_1.__await(value);
}
}
finally {
reader.releaseLock();
}
});
}
function makeAsyncIterable(webStream) {
if (!webStream[Symbol.asyncIterator]) {
webStream[Symbol.asyncIterator] = streamAsyncIterator.bind(webStream);
}
if (!webStream.values) {
webStream.values = streamAsyncIterator.bind(webStream);
}
}
function ensureNodeStream(stream) {
if (stream instanceof ReadableStream) {
makeAsyncIterable(stream);
return node_stream_1.Readable.fromWeb(stream);
}
else {
return stream;
}
}
function toStream(source) {
if (source instanceof Uint8Array) {
return node_stream_1.Readable.from(Buffer.from(source));
}
else if ((0, typeGuards_js_1.isBlob)(source)) {
return toStream((0, file_js_1.getRawContent)(source));
}
else {
return ensureNodeStream(source);
}
}
/**
* Utility function that concatenates a set of binary inputs into one combined output.
*
* @param sources - array of sources for the concatenation
* @returns - in Node, a (() =\> NodeJS.ReadableStream) which, when read, produces a concatenation of all the inputs.
* In browser, returns a `Blob` representing all the concatenated inputs.
*
* @internal
*/
async function concat(sources) {
return function () {
const streams = sources.map((x) => (typeof x === "function" ? x() : x)).map(toStream);
return node_stream_1.Readable.from((function () {
return tslib_1.__asyncGenerator(this, arguments, function* () {
var _a, e_1, _b, _c;
for (const stream of streams) {
try {
for (var _d = true, stream_1 = (e_1 = void 0, tslib_1.__asyncValues(stream)), stream_1_1; stream_1_1 = yield tslib_1.__await(stream_1.next()), _a = stream_1_1.done, !_a; _d = true) {
_c = stream_1_1.value;
_d = false;
const chunk = _c;
yield yield tslib_1.__await(chunk);
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (!_d && !_a && (_b = stream_1.return)) yield tslib_1.__await(_b.call(stream_1));
}
finally { if (e_1) throw e_1.error; }
}
}
});
})());
};
}
//# sourceMappingURL=concat.js.map