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interface StorageData<T = any> { |
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data: T |
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expire: number | null |
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} |
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export function createLocalStorage(options?: { expire?: number | null }) { |
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const DEFAULT_CACHE_TIME = 60 * 60 * 24 * 7 |
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const { expire } = Object.assign({ expire: DEFAULT_CACHE_TIME }, options) |
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function set<T = any>(key: string, data: T) { |
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const storageData: StorageData<T> = { |
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data, |
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expire: expire !== null ? new Date().getTime() + expire * 1000 : null, |
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} |
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const json = JSON.stringify(storageData) |
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window.localStorage.setItem(key, json) |
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} |
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function get(key: string) { |
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const json = window.localStorage.getItem(key) |
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if (json) { |
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let storageData: StorageData | null = null |
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try { |
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storageData = JSON.parse(json) |
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} |
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catch { |
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} |
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if (storageData) { |
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const { data, expire } = storageData |
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if (expire === null || expire >= Date.now()) |
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return data |
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} |
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remove(key) |
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return null |
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} |
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} |
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function remove(key: string) { |
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window.localStorage.removeItem(key) |
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} |
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function clear() { |
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window.localStorage.clear() |
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} |
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return { set, get, remove, clear } |
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} |
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export const ls = createLocalStorage() |
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export const ss = createLocalStorage({ expire: null }) |
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