node-hot-require

features

1. hot require one,reload all module required by it
2. ignore all module in node_modules and system module
3. custom filter function witch file will be reload or not

// app.js
const express = require("express");
const hot = require("node-hot-require");
// after version 1.0.6,filter witch file will be reload
hot.filter = function(filename) {
    if (filename.endsWith("ignore.js")) {
        return false;
    }
    return true;
};
const app = express();

const router = hot.require("./router.js");

app.use(router);

app.get("/upgrade", function(req, res) {
    hot.reloadAll();
    res.send("ok!");
});

app.listen(3000, function() {
    console.log('Listening on http://localhost:3000');
});

// router.js
var express = require('express');
var router = express.Router();

router.get('/', function(req, res) {
    res.send('change me!');
});

module.exports = router;

open http://localhost:3000

you will get change me!

edit router.js change res.send('hello world')

open http://localhost:3000/upgrade to reload router.js

open http://localhost:3000/

you will get hello world