third_party/v8/test/mjsunit/harmony/bigint/misc.js - cobalt - Git at Google

 // Copyright 2018 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 // Create BigInt in large object space for which MakeImmutable reduces the
 // length.
 const x = 2n ** (2n ** 22n);
 assertEquals(1n, x - (x - 1n));
	// Copyright 2018 the V8 project authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	// Create BigInt in large object space for which MakeImmutable reduces the
	// length.
	const x = 2n (2n 22n);
	assertEquals(1n, x - (x - 1n));