ESLint

ESLint

Everyone hates making mistakes. Javascript is a dynamic programming language and as such, there is not a compiler to warn us whenever we screw up. In contrast, a compiled programming language will catch most errors before your code is even ran.

So a compiler finds many errors during compile-time. Dynamic languages will run into errors when actually running the code (or run-time).

This is where ESLint comes in. Think of syntax-errors, or missing curly braces. When you have ESLint configured, a lot of errors will surface. In addition, ESLint also helps avoiding possible mistakes that do not necessarily result in an error.

Have a look at the documentation: https://eslint.org/

Sometimes dynamically/statically typed and weakly/strongly typed are mixed up. They have different meanings. Javascript is dynamically and weakly typed.

// Weak typing

let number = 10;
number += "5";
number // "105"

Errors in a dynamic programming language often surface during run-time. This means your customers may be the first to experience them. Make sure you lint and test your code!