Buffer.readUIntBE - buffer - Node

method Buffer.readUIntBE

Usage in Deno

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



Buffer.readUIntBE(offset: number,
byteLength: number,
): number

Reads byteLength number of bytes from buf at the specified offset and interprets the result as an unsigned big-endian integer supporting up to 48 bits of accuracy.

This function is also available under the readUintBE alias.

import { Buffer } from 'node:buffer';

const buf = Buffer.from([0x12, 0x34, 0x56, 0x78, 0x90, 0xab]);

console.log(buf.readUIntBE(0, 6).toString(16));
// Prints: 1234567890ab
console.log(buf.readUIntBE(1, 6).toString(16));
// Throws ERR_OUT_OF_RANGE.

Parameters



offset: number

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



byteLength: number

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

Return Type

number