test_double_underscore_enumeration.mjs
No OneTemporary
Actions

Size

1 KB

Referenced Files

None

Subscribers

None

test_double_underscore_enumeration.mjs
View Options

	function assert(condition, message) {
	if (!condition) throw new Error(message);
	}

	const plain = { __x: 1, visible: 2 };
	assert(
	JSON.stringify(Object.keys(plain)) === JSON.stringify(['__x', 'visible']),
	'Object.keys() should retain double-underscore own properties'
	);
	assert(
	JSON.stringify(Object.entries(plain)) === JSON.stringify([['__x', 1], ['visible', 2]]),
	'Object.entries() should retain double-underscore own properties'
	);
	assert(
	JSON.stringify(Reflect.ownKeys(plain)) === JSON.stringify(['__x', 'visible']),
	'Reflect.ownKeys() should retain double-underscore own properties'
	);

	const forInKeys = [];
	for (const key in plain) forInKeys.push(key);
	assert(
	JSON.stringify(forInKeys) === JSON.stringify(['__x', 'visible']),
	'for...in should retain double-underscore own properties'
	);

	const ctorBytes = new Uint8Array([
	0, 97, 115, 109, 1, 0, 0, 0,
	1, 5, 1, 96, 0, 1, 127,
	3, 2, 1, 0,
	7, 21, 1, 17, 95, 95, 119, 97, 115, 109, 95, 99, 97, 108, 108, 95, 99, 116, 111, 114, 115, 0, 0,
	10, 6, 1, 4, 0, 65, 1, 11,
	]);

	const module = new WebAssembly.Module(ctorBytes);
	const instance = new WebAssembly.Instance(module);
	assert(
	typeof instance.exports.__wasm_call_ctors === 'function',
	'wasm export named __wasm_call_ctors should be callable'
	);
	assert(
	JSON.stringify(Object.keys(instance.exports)) === JSON.stringify(['__wasm_call_ctors']),
	'Object.keys(instance.exports) should retain __wasm_call_ctors'
	);

	const copiedExports = Object.fromEntries(Object.entries(instance.exports));
	assert(
	typeof copiedExports.__wasm_call_ctors === 'function',
	'Object.entries(instance.exports) should preserve __wasm_call_ctors for Asyncify-style wrappers'
	);
	assert(copiedExports.__wasm_call_ctors() === 1, 'copied wasm export should still execute');

	console.log('double-underscore-enumeration:ok');

File Metadata

Mime Type: application/javascript
Expires: Sat, May 2, 10:06 AM (2 d)
Storage Engine: blob
Storage Format: Raw Data
Storage Handle: 543481
Default Alt Text: test_double_underscore_enumeration.mjs (1 KB)

Event Timeline