@prismicio/client/dist/lib/pLimit.js

The official JavaScript + TypeScript client library for Prismic

//#region src/lib/pLimit.ts
const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
/**
* Creates a limiting function that will only execute one promise at a time and
* respect a given interval between each call.
*
* @param args - Options for the function, `interval` is the minimum time to
*   wait between each promise execution.
*
* @returns A limiting function as per configuration, see {@link LimitFunction}.
*/
const pLimit = ({ interval } = {}) => {
	const queue = [];
	let busy = false;
	let lastCompletion = 0;
	const resumeNext = () => {
		if (!busy && queue.length > 0) {
			var _queue$shift;
			(_queue$shift = queue.shift()) === null || _queue$shift === void 0 || _queue$shift();
			busy = true;
		}
	};
	const next = () => {
		busy = false;
		resumeNext();
	};
	const run = async (function_, resolve, arguments_) => {
		const timeSinceLastCompletion = Date.now() - lastCompletion;
		if (interval && timeSinceLastCompletion < interval) await sleep(interval - timeSinceLastCompletion);
		const result = (async () => function_(...arguments_))();
		resolve(result);
		try {
			await result;
		} catch {}
		lastCompletion = Date.now();
		next();
	};
	const enqueue = (function_, resolve, arguments_) => {
		new Promise((internalResolve) => {
			queue.push(internalResolve);
		}).then(run.bind(void 0, function_, resolve, arguments_));
		(async () => {
			await Promise.resolve();
			if (!busy) resumeNext();
		})();
	};
	return ((function_, ...arguments_) => new Promise((resolve) => {
		enqueue(function_, resolve, arguments_);
	}));
};

//#endregion
export { pLimit };
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