Unique Execution

A very simple and small services to guarantee a Unique Execution of some piece of code (async) in a javascript / typescript applications.

• Project licensed under: GPLv3
• Site Documentation: Homepage
• Repository: GitHub

Environment Variables

This services use some environment variables to pre-adjust some things, like:

• UNIQUE_START_DELAY: define a minimum delay to start func execution;
• UNIQUE_POOLING: pooling time to check delayed func to execute;

The delay time is a mininum delay time, checked at UNIQUE_POOLING interval.

Example

import { uniqueExecution } from '@nsfilho/unique';

/**
 * Simple async function for example.
 * Show a message after certain amount of time.
 */
const delayMessage = async (message: string, delay: number): Promise<void> =>
    new Promise((resolve) => {
        setTimeout(() => {
            console.log(message);
            resolve();
        }, delay);
    });

uniqueExecution({
    name: __filename,
    callback: async () => {
        // execute a async func
        await delayMessage('Hello World!!', 2000);
    },
});