@oazmi/build-tools
Version:
general deno build tool scripts which I practically use in all of my typescript repos
35 lines (34 loc) • 1.09 kB
JavaScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// This module is browser compatible.
import { Buffer } from "./buffer.js";
import { writeAll } from "./write_all.js";
/**
* Create a {@linkcode Reader} from a {@linkcode ReadableStreamDefaultReader}.
*
* @example
* ```ts
* import { copy } from "@std/io/copy";
* import { readerFromStreamReader } from "@std/io/reader-from-stream-reader";
*
* const res = await fetch("https://deno.land");
* using file = await Deno.open("./deno.land.html", { create: true, write: true });
*
* const reader = readerFromStreamReader(res.body!.getReader());
* await copy(reader, file);
* ```
*/
export function readerFromStreamReader(streamReader) {
const buffer = new Buffer();
return {
async read(p) {
if (buffer.empty()) {
const res = await streamReader.read();
if (res.done) {
return null; // EOF
}
await writeAll(buffer, res.value);
}
return buffer.read(p);
},
};
}