In what order will the hooks be called when using lifecycle hooks in a mixin and attaching it to a component?

When using lifecycle hooks in a mixin and attaching it to a React component, the order of hook invocation is as follows:

1. Hooks from the mixin are called first.
2. Then, hooks from the component itself are called.

This is because mixins are attached to the component, and their lifecycle methods are called before the component's methods, allowing mixins to perform preliminary logic or modifications.

For example, if both the mixin and the component define a componentDidMount method, the mixin's componentDidMount will execute first, followed by the component's componentDidMount.

In functional components with hooks, the order of hook calls is determined by the order in which they are called within the function body. Mixins are not used as such, but when hooks are composed, the order of invocation is preserved from top to bottom.

Thus, when using class components with mixins, the lifecycle is called first on the mixins, then on the component.