use-lifecycle

A collection of hooks that helps you to track the lifecycle of your components in a similar way to class components.

useDidMount

This hook is a replacement for the componentDidMount method.

import {useDidMount} from 'use-lifecycle';

export default function MyComponent() {
  useDidMount(() => {
    console.log('MyComponent mounted');
  });
}

useDidUpdate

This hook is similar to the componentDidUpdate method, the only difference is that you need to specify what variable you want to keep track of updates.

import {useDidUpdate} from 'use-lifecycle';

export default function MyComponent(props) {
  useDidUpdate(prevProps => {
    console.log('Previous props', prevProps);
    console.log('Current props', props);
  }, props);
}

It can also be used multiple times for tracking different things separately.

export default function MyComponent(props) {
  const [state, setState] = useState();

  useDidUpdate(prevState => {
    console.log('State changed', state, prevState);
  }, state);

  useDidUpdate(prevProps => {
    console.log('Props changed', props, prevProps);
  }, props);

  useDidUpdate(prevFoo => {
    console.log('foo changed', props.foo, prevFoo);
  }, props.foo);
}

useWillUnmount

A hook that's a replacement for the componentWillUnmount method.

import {useWillUnmount} from 'use-lifecycle';

export default function MyComponent(props) {
  useWillUnmount(prevProps => {
    console.log('MyComponent will unmount');
  }, props);
}

ISC License

Copyright 2019 Alan Hoffmeister [email protected]

Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.