Module

std/node/buffer.ts>Buffer#readIntBE

Deno standard library
denoland/deno_std
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method Buffer.prototype.readIntBE
import { Buffer } from "https://dotland.deno.dev/std@0.177.0/node/buffer.ts";

Reads byteLength number of bytes from buf at the specified offsetand interprets the result as a big-endian, two's complement signed value supporting up to 48 bits of accuracy.

import { Buffer } from 'buffer';

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

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

Returns

number