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// deno-fmt-ignore-file// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.// Taken from Node 18.12.0// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
'use strict';require('../common');const assert = require('assert');
const buf = Buffer.allocUnsafe(8);
['LE', 'BE'].forEach(function(endianness) {  // Should allow simple BigInts to be written and read  let val = 123456789n;  buf[`writeBigInt64${endianness}`](val, 0);  let rtn = buf[`readBigInt64${endianness}`](0);  assert.strictEqual(val, rtn);
  // Should allow INT64_MAX to be written and read  val = 0x7fffffffffffffffn;  buf[`writeBigInt64${endianness}`](val, 0);  rtn = buf[`readBigInt64${endianness}`](0);  assert.strictEqual(val, rtn);
  // Should read and write a negative signed 64-bit integer  val = -123456789n;  buf[`writeBigInt64${endianness}`](val, 0);  assert.strictEqual(val, buf[`readBigInt64${endianness}`](0));
  // Should read and write an unsigned 64-bit integer  val = 123456789n;  buf[`writeBigUInt64${endianness}`](val, 0);  assert.strictEqual(val, buf[`readBigUInt64${endianness}`](0));
  // Should throw a RangeError upon INT64_MAX+1 being written  assert.throws(function() {    const val = 0x8000000000000000n;    buf[`writeBigInt64${endianness}`](val, 0);  }, RangeError);
  // Should throw a RangeError upon UINT64_MAX+1 being written  assert.throws(function() {    const val = 0x10000000000000000n;    buf[`writeBigUInt64${endianness}`](val, 0);  }, {    code: 'ERR_OUT_OF_RANGE',    message: 'The value of "value" is out of range. It must be ' +      '>= 0n and < 2n ** 64n. Received 18_446_744_073_709_551_616n'  });
  // Should throw a TypeError upon invalid input  assert.throws(function() {    buf[`writeBigInt64${endianness}`]('bad', 0);  }, TypeError);
  // Should throw a TypeError upon invalid input  assert.throws(function() {    buf[`writeBigUInt64${endianness}`]('bad', 0);  }, TypeError);});