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useLocalStorage.ts
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47 lines (38 loc) · 950 Bytes
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// @ts-nocheck
import React from 'react'
const getItem = key => {
try {
return JSON.parse(localStorage.getItem(key))
} catch {
return undefined
}
}
export default function useLocalStorage(key, defaultValue) {
const [value, setValue] = React.useState()
React.useEffect(() => {
const initialValue = getItem(key)
if (typeof initialValue === 'undefined' || initialValue === null) {
setValue(
typeof defaultValue === 'function' ? defaultValue() : defaultValue
)
} else {
setValue(initialValue)
}
}, [defaultValue, key])
const setter = React.useCallback(
updater => {
setValue(old => {
let newVal = updater
if (typeof updater == 'function') {
newVal = updater(old)
}
try {
localStorage.setItem(key, JSON.stringify(newVal))
} catch {}
return newVal
})
},
[key]
)
return [value, setter]
}