64 lines
1.2 KiB
JavaScript
64 lines
1.2 KiB
JavaScript
let isLocalStorageEnabled = null
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try {
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window.localStorage.setItem('test', 'test')
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window.localStorage.removeItem('test')
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isLocalStorageEnabled = true
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} catch (e) {
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isLocalStorageEnabled = false
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}
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const setItem = (key, value) => {
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if (isLocalStorageEnabled) {
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window.localStorage.setItem(key, JSON.stringify(value))
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}
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}
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const getItem = (key) => {
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if (isLocalStorageEnabled) {
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const value = window.localStorage.getItem(key)
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try {
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return JSON.parse(String(value))
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} catch (err) {
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return value
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}
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}
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return undefined
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}
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const removeItem = (key) => {
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if (isLocalStorageEnabled) {
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return window.localStorage.removeItem(key)
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}
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}
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const clear = () => {
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if (isLocalStorageEnabled) {
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window.localStorage.clear()
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}
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}
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const subscribe = (key, originalListener) => {
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const listener = (event) => {
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if (event.storageArea === window.localStorage && event.key === key) {
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originalListener(event.newValue, event.oldValue)
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}
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}
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window.addEventListener('storage', listener, false)
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return listener
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}
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const unsubscribe = (listener) => {
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window.removeEventListener('storage', listener, false)
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}
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export const localStorage = {
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setItem,
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getItem,
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removeItem,
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clear,
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subscribe,
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unsubscribe,
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}
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