Function pEveryFunction

source/helpers/p-utils.ts:54–81

(
	iterable: List,
	predicate: (value: Element) => Promisable<boolean>,
)

}

export function pEveryFunction<
	List extends Iterable<unknown>,
	Element extends IterableElement<List>,
>(
	iterable: List,
	predicate: (value: Element) => Promisable<boolean>,
): Promisable<boolean> {
	const promises: Array<PromiseLike<boolean>> = [];
	// Prioritize sync functions and early returns
	for (const item of iterable) {
		const result = predicate(item as Element);
		if (typeof result === 'boolean') {
			if (!result) {
				// Early sync return on the first falsy value
				return false;
			}
		} else {
			promises.push(result);
		}
	}

	if (promises.length === 0) {
		// Matches `[].every(Boolean)`
		return true;
	}

	return pEvery(promises);
}