dedupe-promise

Very simple key-based Promise deduplication cache. If there's no entry for the key, it runs the provided function and keeps it's returned Promise in the cache until it's resolved.

Example

A runnable version of this example can be found in example.js in the repository.

import deduper from "dedupe-promise";

const cache = deduper();

cache.run("test1", () => {
	console.log("running function test1");
	return new Promise((resolve) => {
		setTimeout(() => {
			resolve();
		}, 2000);
	})
});

cache.run("test1", () => {
	console.log("running function test1");
	return new Promise((resolve) => {
		setTimeout(() => {
			resolve();
		}, 2000);
	})
});

// will only run test1 once

License, donations

GPL-3.0. If you want to support my work, you can:

Changelog

v0.0.1 (February 12th, 2024)

• Adaptation from syncpipe package