/
consumers.mjs
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/
consumers.mjs
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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
import { Buffer } from "../buffer.ts";
/**
* @typedef {import('../_global.d.ts').ReadableStream
* } ReadableStream
* @typedef {import('../_stream.d.ts')} Readable
*/
/**
* @param {AsyncIterable|ReadableStream|Readable} stream
* @returns {Promise<Blob>}
*/
async function blob(stream) {
const chunks = [];
for await (const chunk of stream) {
chunks.push(chunk);
}
return new Blob(chunks);
}
/**
* @param {AsyncIterable|ReadableStream|Readable} stream
* @returns {Promise<ArrayBuffer>}
*/
async function arrayBuffer(stream) {
const ret = await blob(stream);
return ret.arrayBuffer();
}
/**
* @param {AsyncIterable|ReadableStream|Readable} stream
* @returns {Promise<Buffer>}
*/
async function buffer(stream) {
return Buffer.from(await arrayBuffer(stream));
}
/**
* @param {AsyncIterable|ReadableStream|Readable} stream
* @returns {Promise<string>}
*/
async function text(stream) {
const dec = new TextDecoder();
let str = "";
for await (const chunk of stream) {
if (typeof chunk === "string") {
str += chunk;
} else {
str += dec.decode(chunk, { stream: true });
}
}
// Flush the streaming TextDecoder so that any pending
// incomplete multibyte characters are handled.
str += dec.decode(undefined, { stream: false });
return str;
}
/**
* @param {AsyncIterable|ReadableStream|Readable} stream
* @returns {Promise<any>}
*/
async function json(stream) {
const str = await text(stream);
return JSON.parse(str);
}
export default {
arrayBuffer,
blob,
buffer,
json,
text,
};
export { arrayBuffer, blob, buffer, json, text };