import { computed, toRef, isRef } from 'vue';
import { u as useNuxtApp } from './server.mjs';

const useStateKeyPrefix = "$s";
function useState(...args) {
  const autoKey = typeof args[args.length - 1] === "string" ? args.pop() : void 0;
  if (typeof args[0] !== "string") {
    args.unshift(autoKey);
  }
  const [_key, init] = args;
  if (!_key || typeof _key !== "string") {
    throw new TypeError("[nuxt] [useState] key must be a string: " + _key);
  }
  if (init !== void 0 && typeof init !== "function") {
    throw new Error("[nuxt] [useState] init must be a function: " + init);
  }
  const key = useStateKeyPrefix + _key;
  const nuxtApp = useNuxtApp();
  const state = toRef(nuxtApp.payload.state, key);
  if (init) {
    nuxtApp._state[key] ??= { _default: init };
  }
  if (state.value === void 0 && init) {
    const initialValue = init();
    if (isRef(initialValue)) {
      nuxtApp.payload.state[key] = initialValue;
      return initialValue;
    }
    state.value = initialValue;
  }
  return state;
}
function useLoading() {
  const count = useState("app:loading", () => 0);
  const loading = computed(() => count.value > 0);
  function begin() {
    count.value++;
  }
  function end() {
    count.value = Math.max(0, count.value - 1);
  }
  return { count, loading, begin, end };
}

export { useState as a, useLoading as u };
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