Rules of Hooks

React Hooks are basically JavaScript functions, but there are two rules that you need to follow in order to use them. React provides a linter plugin to enforce those rules for you, which you can install by running the following command:

npm install --save-dev eslint-plugin-react-hooks

Let’s look at these two rules.

Rule 1: Only call Hooks at the top level

To ensure the proper functioning of React Hooks, it is important to avoid calling them inside loops, conditions, or nested functions. Instead, it is recommended to always use Hooks at the top level of your React function. This practice ensures that Hooks are called in the same order every time a component is rendered, allowing React to correctly preserve the state of Hooks between multiple useState and useEffect calls. Following this rule will help you write more efficient and maintainable code with React Hooks.

Rule 2: Only call Hooks from React functions

To ensure that all stateful...