Returns a port number for your dev server based on file path. Useful when you need to start multiple dev servers, but don't want them to have truly random ports. Instead generates a consistent port number, which depends on current file path.
// let's assume you are using express:
var app = new require('express')();
// To get a port number for this dev server:
var port = require('port-number')();
// now you can listen on this port. It is guaranteed to be the same as long
// as you launch your app from the same folder:
app.listen(port, function(error) {
if (error) {
console.error(error);
} else {
console.info("==> 🌎 Listening on port %s. Open up http://localhost:%s/ in your browser.", port, port);
}
});With npm do:
npm install port-number
MIT