Diffusion Ant (type-hints-typescript) Code

ant/tests/test_await_thenables.cjs
899dad6b8a9etype-hints-typescript

test_await_thenables.cjs
View Options

			function assertEq(name, actual, expected) {
			if (actual !== expected) {
			throw new Error(`${name}: expected ${expected}, got ${actual}`);
			}
			console.log(`ok ${name}`);
			}

			class ProtoThenable {
			constructor(value) {
			this.value = value;
			}
			}

			ProtoThenable.prototype.then = function(resolve, _reject) {
			resolve(this.value);
			};

			class APIPromiseLike {
			constructor(value) {
			this.promise = Promise.resolve([{ ok: true, value }]);
			}

			then(onfulfilled, onrejected) {
			return this.promise.then(
			onfulfilled ? ([result]) => onfulfilled(result.value) : undefined,
			onrejected
			);
			}
			}

			(async function() {
			assertEq('await plain thenable', await {
			then(resolve, _reject) {
			resolve(42);
			}
			}, 42);

			assertEq('await prototype thenable', await new ProtoThenable(99), 99);

			assertEq('await APIPromise-like thenable', await new APIPromiseLike('ok'), 'ok');

			assertEq(
			'Promise.resolve still adopts thenables',
			await Promise.resolve(new ProtoThenable('wrapped')),
			'wrapped'
			);
			})().catch((err) => {
			console.error(err);
			process.exitCode = 1;
			});

Owner Packages

No Owners