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export default function (Alpine) {
Alpine.magic('persist', (el, { interceptor }) => {
let alias
let storage = localStorage
return interceptor((initialValue, getter, setter, path, key) => {
let lookup = alias || `_x_${path}`
let initial = storageHas(lookup, storage)
? storageGet(lookup, storage)
: initialValue
setter(initial)
Alpine.effect(() => {
let value = getter()
storageSet(lookup, value, storage)
setter(value)
})
return initial
}, func => {
func.as = key => { alias = key; return func },
func.using = target => { storage = target; return func }
})
})
}
function storageHas(key, storage) {
return storage.getItem(key) !== null
}
function storageGet(key, storage) {
return JSON.parse(storage.getItem(key, storage))
}
function storageSet(key, value, storage) {
storage.setItem(key, JSON.stringify(value))
}
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