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Fix passing in assertion message to assertArray (#210)

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Co-authored-by: Sindre Sorhus <sindresorhus@gmail.com>
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Martin Eneqvist 2024-09-06 17:52:56 +02:00 • committed by GitHub
parent ab85d9bca9
commit 5565c5e3ba
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2 changed files with 9 additions and 3 deletions
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8
source/index.ts
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@ -1143,14 +1143,16 @@ export function assertAny(predicate: Predicate | Predicate[], ...values: unknown
} }
} }
export function assertArray<T = unknown>(value: unknown, assertion?: (element: unknown) => asserts element is T, message?: string): asserts value is T[] { export function assertArray<T = unknown>(value: unknown, assertion?: (element: unknown, message?: string) => asserts element is T, message?: string): asserts value is T[] {
if (!isArray(value)) { if (!isArray(value)) {
throw new TypeError(message ?? typeErrorMessage('Array', value)); throw new TypeError(message ?? typeErrorMessage('Array', value));
} }
if (assertion) { if (assertion) {
// eslint-disable-next-line unicorn/no-array-for-each, unicorn/no-array-callback-reference for (const element of value) {
value.forEach(assertion); // @ts-expect-error: "Assertions require every name in the call target to be declared with an explicit type annotation."
assertion(element, message);
}
} }
} }

4
test/test.ts
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@ -773,6 +773,10 @@ test('is.array', t => {
x[0]?.toFixed(0); x[0]?.toFixed(0);
} }
}); });
t.throws(() => {
assert.array([1, '2'], assert.number, 'Expected numbers');
}, {message: /Expected numbers/});
}); });
test('is.function', t => { test('is.function', t => {