implementing Asynchronous Function Execution Order in Node.js Using Promises
I tried several approaches but none seem to work. I'm getting frustrated with I'm working with an scenario with the execution order of asynchronous functions in my Node.js application. I have a function that saves user data to a database and another function that sends a confirmation email after the save is successful. However, I'm noticing that the email is sometimes sent before the save operation completes, resulting in errors since the data isn't written when the email is triggered. Here's a simplified version of my code: ```javascript const saveUserData = (userData) => { return new Promise((resolve, reject) => { // Simulating a database save operation with a timeout setTimeout(() => { console.log('User data saved'); resolve(); }, 1000); }); }; const sendConfirmationEmail = (email) => { console.log(`Sending email to ${email}`); }; const registerUser = async (userData) => { await saveUserData(userData); sendConfirmationEmail(userData.email); }; registerUser({ email: 'user@example.com' }); ``` I expected the email to be sent only after the user data has been saved, but I'm seeing cases where the email log appears before the 'User data saved' message. I have confirmed that the `registerUser` function is indeed awaited. Could this be an scenario with how the Promises are being handled, or is there something else I am missing? I'm using Node.js v16.13.0. Any insights on best practices for ensuring the correct execution order in asynchronous operations would be greatly appreciated. I'm developing on Debian with Javascript. I'm open to any suggestions. The stack includes Javascript and several other technologies.