readUIntBE
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.
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Since
v0.11.15
Parameters
offset
Number of bytes to skip before starting to read. Must satisfy 0 <= offset <= buf.length - byteLength
.
byteLength
Number of bytes to read. Must satisfy 0 < byteLength <= 6
.