Express.js shutdown hook

Question

In Express.js, is there someway of setting a callback function to be executed when the application shuts down?

Answer 1

If you need to access something in the current scope, you can bind() like in this answer: https://stackoverflow.com/a/14032965/1410035 but you might want to bind this.

function exitHandler(options, err) {
    if (options.cleanup) console.log('clean');
    if (err) console.log(err.stack);
    if (options.exit) process.exit();
}

process.on('exit', exitHandler.bind(null,{cleanup:true}));