Express-power NPM

express-power

Express with superpowers! Effortless clustering, CLI logging & colors with Express.

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Installation

Install Express Power with yarn or npm:

yarn add express-power express

npm install express-power express

Usage & Examples

Minimal example

const Power = require("express-power");

const worker = app => {
    app.listen(4000, () => Power.log("Listening on port 4000".green));
};

Power.load({ worker });

Extended Example

const Power = require('express-power');
const {log} = Power;

const master = () => {
    log("app started");
};

const worker = app => {
    app.use((req, res) => res.status(200).send("Hello World"));
    app.listen(4000, () => Power.log("Listening on port 4000".green));
};

let options = {
    workers: 8,
    logToFile: true,
    path: __dirname + "/power.log",
    master,
    worker,
};

Power.load(options);

In production, usage of pm2 to run your Express Power app is strongly recommended.

Options

Power options you can use in Power.load(options);

Option	Default Value	What it does
workers	2	Number of workers.
logToFile	false	Enable logging to file.
path	appDirectory + '/power.log'	Log filename.
master	() => {}	Function to execute before spawning master process. You can welcome the user and run pre-checks here.
worker	() => {}	Function to execute after spawning worker process. Your Express app should be handled here.
autoRestart	true	Restarts automatically a worker when it dies. Useful for keeping your process alive when unexpected errors occur.

Full Reference

Require Express Power this way:

const Power = require('express-power');

Now, the exported elements are:

const {load, log, italy} = Power;

Let's see them in detail:

Element	What it does	Proto
load	Powers Express	load(options)
log	Power logs to console	log(text)
italy	Colors text as Italian flag	italy(text) / text.italy

Power options you can use in load(main, options);

Option	Default Value	What it does
workers	2	Number of workers.
logToFile	false	Enable logging to file.
path	appDirectory + '/power.log'	Log filename.
master	() => {}	Function to execute before spawning master process. You can welcome the user and run pre-checks here.
worker	() => {}	Function to execute after spawning worker process. Your Express app should be handled here.
autoRestart	true	Restarts automatically a worker when it dies. Useful for keeping your process alive when unexpected errors occur.