method Buffer.writeBigUInt64BE
Usage in Deno
```typescript import { type Buffer } from "node:node__buffer.d.ts"; ```
Buffer.writeBigUInt64BE(value: bigint,offset?: number,): number
Writes `value` to `buf` at the specified `offset` as big-endian.
This function is also available under the `writeBigUint64BE` alias.
```js
import { Buffer } from 'node:buffer';
const buf = Buffer.allocUnsafe(8);
buf.writeBigUInt64BE(0xdecafafecacefaden, 0);
console.log(buf);
// Prints:
```
number
`offset` plus the number of bytes written.