Add svelte check

[rbdr/forum] / src / lib / utils / resolve_after.ts

export type ResolveAfterPromise = {
	counter: () => void;
	promise: Promise<void>;
};

export const resolveAfter = function (timesUntilResolve: number): ResolveAfterPromise {
	let counter = null;
	let currentValue = 0;

	if (timesUntilResolve <= 0) {
		throw new Error('Resolve after requires a positive integer');
	}

	const promise: Promise<void> = new Promise((resolvePromise) => {
		counter = () => {
			if (++currentValue === timesUntilResolve) {
				resolvePromise();
			}
		};
	});

	return {
		counter,
		promise
	};
};