Discussion: Arrow Functions vs Traditional Functions

[fisker0303]

The style guide recommends using arrow functions for anonymous functions (Section 8.1). While I agree with this recommendation, I think it would be helpful to add more examples showing when traditional functions might still be preferred, such as:

1. When you need the function to be hoisted
2. When you need to use this binding differently
3. When you need the arguments object

What do you think about adding these clarifications?

[ljharb]

This guide strictly forbids relying on hoisting, and you can use rest syntax if you need all the unnamed arguments.

Basically any time a function isn’t an inline callback, it should be a traditional function.

[ryzrr]

Yes, adding those clarifications would be helpful. While arrow functions are preferred for their conciseness, examples highlighting cases like hoisting, this binding, and use of arguments can provide important context and prevent misuse. It would make the style guide more complete and practical.