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feat(testHook): modify testHook to return unmount function (#290)
* Returns unmount function on testHook * Adds test for unmount function; Adds example of useEffect * Add Andrewmat as contributor * Adds rerender on testHook return
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,10 +1,25 @@ | ||
| import {useState} from 'react' | ||
| import {useState, useEffect} from 'react' | ||
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|
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| function useCounter({initialCount = 0, step = 1} = {}) { | ||
| export function useCounter({initialCount = 0, step = 1} = {}) { | ||
| const [count, setCount] = useState(initialCount) | ||
| const increment = () => setCount(c => c + step) | ||
| const decrement = () => setCount(c => c - step) | ||
| return {count, increment, decrement} | ||
| } | ||
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|
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| export default useCounter | ||
| export function useDocumentTitle(title) { | ||
| const [originalTitle, setOriginalTitle] = useState(document.title) | ||
| useEffect(() => { | ||
| setOriginalTitle(document.title) | ||
| document.title = title | ||
| return () => { | ||
| document.title = originalTitle | ||
| } | ||
| }, [title]) | ||
| } | ||
|
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| export function useCall(callback, deps) { | ||
| useEffect(() => { | ||
| callback() | ||
| }, deps) | ||
| } |
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