How to handle errors in node.js ?

Node.js is a JavaScript extension used for server-side scripting. Error handling is a mandatory step in application development. A Node.js developer may work with both synchronous and asynchronous functions simultaneously. Handling errors in asynchronous functions is important because their behavior may vary, unlike synchronous functions. While try-catch blocks are effective for synchronous functions, asynchronous functions can be dealt with callbacks, promises, and async-await. Try-catch is synchronous means that if an asynchronous function throws an error in a synchronous try/catch block, no error throws. Errors thrown in Node.js applications can be handled in the following ways:

Using try-catch block
Using callbacks
Using promises and promise callbacks
Using async-await