Node Reference for BufferConstructor.copyBytesFrom

method BufferConstructor.copyBytesFrom

Usage in Deno

import { type BufferConstructor } from "node:buffer";



BufferConstructor.copyBytesFrom(view: TypedArray,
offset?: number,
length?: number,
): Buffer

Copies the underlying memory of view into a new Buffer.

const u16 = new Uint16Array([0, 0xffff]);
const buf = Buffer.copyBytesFrom(u16, 1, 1);
u16[1] = 0;
console.log(buf.length); // 2
console.log(buf[0]); // 255
console.log(buf[1]); // 255

Parameters



view: TypedArray

The {TypedArray} to copy.

optional



offset: number = 0

The starting offset within view.

optional



length: number = view.length - offset

The number of elements from view to copy.

Return Type

Buffer