Buffer.writeUIntBE - buffer - Node

Buffer.writeUIntBE - buffer - Node documentation

method Buffer.writeUIntBE

Usage in Deno

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



Buffer.writeUIntBE(value: number,
offset: number,
byteLength: number,
): number

Writes byteLength bytes of value to buf at the specified offsetas big-endian. Supports up to 48 bits of accuracy. Behavior is undefined when value is anything other than an unsigned integer.

This function is also available under the writeUintBE alias.

import { Buffer } from 'node:buffer';

const buf = Buffer.allocUnsafe(6);

buf.writeUIntBE(0x1234567890ab, 0, 6);

console.log(buf);
// Prints: <Buffer 12 34 56 78 90 ab>

Parameters



value: number

Number to be written to buf.



offset: number

Number of bytes to skip before starting to write. Must satisfy 0 <= offset <= buf.length - byteLength.



byteLength: number

Number of bytes to write. Must satisfy 0 < byteLength <= 6.

Return Type

number

offset plus the number of bytes written.