Diffusion Ant (type-hints-typescript) Code

ant/examples/spec/throw_expressions.js
899dad6b8a9etype-hints-typescript

throw_expressions.js
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			import { test, testThrows, summary } from './helpers.js';

			console.log('Throw Expression Tests\n');

			const must = value => value \|\| throw new Error('missing');
			test('throw expression in arrow skip', must('ok'), 'ok');
			testThrows('throw expression in arrow throws', () => must(''));

			function fallback(value) {
			return value ?? throw new Error('nullish');
			}

			test('throw expression in nullish skip', fallback('value'), 'value');
			testThrows('throw expression in nullish throws', () => fallback(null));

			function choose(value) {
			return value ? value : throw new Error('bad');
			}

			test('throw expression in conditional skip', choose(7), 7);
			testThrows('throw expression in conditional throws', () => choose(0));

			function defaultParam(value = throw new Error('default')) {
			return value;
			}

			test('throw expression in parameter initializer skip', defaultParam(3), 3);
			testThrows('throw expression in parameter initializer throws', () => defaultParam());

			let caught;
			try {
			const value = false \|\| throw 'sentinel';
			void value;
			} catch (e) {
			caught = e;
			}
			test('throw expression throws raw value', caught, 'sentinel');

			summary();

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