method Buffer.writeBigInt64BE
Usage in Deno
```typescript import { type Buffer } from "node:node__buffer.d.ts"; ```
Buffer.writeBigInt64BE(value: bigint,offset?: number,): number
Writes `value` to `buf` at the specified `offset` as big-endian.
`value` is interpreted and written as a two's complement signed integer.
```js
import { Buffer } from 'node:buffer';
const buf = Buffer.allocUnsafe(8);
buf.writeBigInt64BE(0x0102030405060708n, 0);
console.log(buf);
// Prints:
```
number
`offset` plus the number of bytes written.