promise/prefer-await-to-callbacks Style ​
What it does ​
The rule encourages the use of async/await for handling asynchronous code instead of traditional callback functions. async/await, introduced in ES2017, provides a clearer and more concise syntax for writing asynchronous code, making it easier to read and maintain.
Why is this bad? ​
Using callbacks can lead to complex, nested structures known as "callback hell," which make code difficult to read and maintain. Additionally, error handling can become cumbersome with callbacks, whereas async/await allows for more straightforward try/catch blocks for managing errors.
Examples ​
Examples of incorrect code for this rule:
js
cb();
callback();
doSomething(arg, (err) => {});
function doSomethingElse(cb) {}Examples of correct code for this rule:
js
await doSomething(arg);
async function doSomethingElse() {}
function* generator() {
yield yieldValue((err) => {});
}
eventEmitter.on("error", (err) => {});