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import { kStaty } from './constants.js'
function snapshotProp (state, prop) {
const value = dlv(state, prop)
const staty = value?.[kStaty]
if (staty) {
return staty.getSnapshot()
}
return value
}
function dlv (obj, key) {
let p
for (p = 0; p < key.length; p++) {
if (obj) {
const staty = obj?.[kStaty]
const k = key[p]
if (staty) {
obj = staty.getValueByProp(k)
} else {
obj = obj[k]
}
} else {
return obj
}
}
return obj
}
/**
* Create an snapshot from the state
*
* @template {unknown} T
* @overload
* @param {T} state
* @returns {T}
*
* @template {unknown} T
* @overload
* @param {T} state
* @param {Array<string>} props
* @returns {Array<unknown>}
*
* @template {unknown} T
* @overload
* @param {T} state
* @param {string} props
* @returns {unknown}
*/
export function snapshot (state, props) {
if (!state[kStaty]) throw new Error('the snapshot requires a valid staty object')
if (Array.isArray(props)) {
return props.map(p => snapshotProp(state, p.split('.')))
}
if (typeof props === 'string') {
return snapshotProp(state, props.split('.'))
}
return state[kStaty].getSnapshot()
}
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