Skip to main content
Deno 2 is finally here 🎉️
Learn more
Module

x/deno/cli/tsc/dts/lib.deno.ns.d.ts>Deno.write

A modern runtime for JavaScript and TypeScript.
Go to Latest
function Deno.write
import { Deno } from "https://deno.land/x/deno@v1.28.3/cli/tsc/dts/lib.deno.ns.d.ts";
const { write } = Deno;

Write to the resource ID (rid) the contents of the array buffer (data).

Resolves to the number of bytes written. This function is one of the lowest level APIs and most users should not work with this directly, but rather use writeAll() from std/streams/conversion.ts instead.

It is not guaranteed that the full buffer will be written in a single call.

const encoder = new TextEncoder();
const data = encoder.encode("Hello world");
const file = await Deno.open("/foo/bar.txt", { write: true });
const bytesWritten = await Deno.write(file.rid, data); // 11
Deno.close(file.rid);

Parameters

rid: number
data: Uint8Array

Returns

Promise<number>