forked from coracle/flotilla
Jon Staab
32 lines
743 B
TypeScript
32 lines
743 B
TypeScript
import {throttle} from 'throttle-debounce'
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import {browser} from '$app/environment'
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import {writable} from 'svelte/store'
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export const parseJson = (json: string) => {
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if (!json) return null
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try {
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return JSON.parse(json)
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} catch (e) {
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return null
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}
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}
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export const getJson = (k: string) =>
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browser ? parseJson(localStorage.getItem(k) || "") : null
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export const setJson = (k: string, v: any) => {
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if (browser) {
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localStorage.setItem(k, JSON.stringify(v))
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}
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}
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export const synced = <T>(key: string, defaultValue: T, delay = 300) => {
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const init = getJson(key)
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const store = writable<T>(init === null ? defaultValue : init)
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store.subscribe(throttle(delay, (value: T) => setJson(key, value)))
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return store
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}
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