buf.readBigUInt64BE([offset])
从 buf 在指定的 offset 处读取一个无符号的大端 64 位整数。
【Reads an unsigned, big-endian 64-bit integer from buf at the specified
offset.】
这个函数也可以通过 readBigUint64BE 别名使用。
【This function is also available under the readBigUint64BE alias.】
import { Buffer } from 'node:buffer';
const buf = Buffer.from([0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff]);
console.log(buf.readBigUInt64BE(0));
// Prints: 4294967295nconst { Buffer } = require('node:buffer');
const buf = Buffer.from([0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff]);
console.log(buf.readBigUInt64BE(0));
// Prints: 4294967295n