node-cron-server

Setup

Install and import node-cron-server. Have a directory to house your plugins.

• Put secondary modules somewhere else so they don't clutter the auto-run mechanism. Pass your plugins path as an argument to NCS.main(...). Run you main js script somehow, somewhere...

import NCS from 'node-cron-server'
import path from 'path'

const __dirname = path.resolve()
const pluginDirectory = process.env.PLUGIN_DIRECTORY || 'plugins'
const pluginPath = path.join(__dirname, pluginDirectory)

NCS.init(pluginPath)
NCS.start()

Plugins

This is the expected format for a plugin:

const self = {
    name: 'Plugin Name',
    description: 'Plugin Description',
    
    // cron time format, see https://www.npmjs.com/package/node-cron
    cron: '0 0 0 * * *', // every day at midnight
    
    task: async function() {
        console.log(`${self.name} is running`)
    }
}

export default self

Every js file in the plugins directory is auto-run.