Add supporting themes required for Lotusdocs

themes/hugo-mod-jslibs-dist/alpinejs/packages/persist/src/index.js

@@ -0,0 +1,77 @@
+export default function (Alpine) {
+    let persist = () => {
+        let alias
+        let storage
+
+        try {
+            storage = localStorage
+        } catch (e) {
+            console.error(e)
+            console.warn('Alpine: $persist is using temporary storage since localStorage is unavailable.')
+
+            let dummy = new Map();
+
+            storage = {
+                getItem: dummy.get.bind(dummy),
+                setItem: dummy.set.bind(dummy)
+            }
+        }
+
+        return Alpine.interceptor((initialValue, getter, setter, path, key) => {
+            let lookup = alias || `_x_${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 }
+        })
+    }
+
+    Object.defineProperty(Alpine, '$persist', { get: () => persist() })
+    Alpine.magic('persist', persist)
+    Alpine.persist = (key, { get, set }, storage = localStorage) => {
+        let initial = storageHas(key, storage)
+            ? storageGet(key, storage)
+            : get()
+
+        set(initial)
+
+        Alpine.effect(() => {
+            let value = get()
+
+            storageSet(key, value, storage)
+
+            set(value)
+        })
+    }
+}
+
+function storageHas(key, storage) {
+    return storage.getItem(key) !== null
+}
+
+function storageGet(key, storage) {
+    let value = storage.getItem(key, storage)
+
+    if (value === undefined) return
+
+    return JSON.parse(value)
+}
+
+function storageSet(key, value, storage) {
+    storage.setItem(key, JSON.stringify(value))
+}