vue3异步加载js文件

useScript.ts

import { onMounted, ref } from 'vue';

interface ScriptOptions {
  src: string;
}

export function useScript(opts: ScriptOptions) {
  const isLoading = ref(false);
  const error = ref(false);
  const success = ref(false);

  const promise = new Promise((resolve, reject) => {
    onMounted(() => {
      const script = document.createElement('script');
      script.type = 'text/javascript';
      script.onload = function () {
        isLoading.value = false;
        success.value = true;
        error.value = false;
        resolve('');
      };

      script.onerror = function (err) {
        isLoading.value = false;
        success.value = false;
        error.value = true;
        reject(err);
      };

      script.src = opts.src;
      document.head.appendChild(script);
    });
  });

  return {
    isLoading,
    error,
    success,
    toPromise: () => promise,
  };
}

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.vue

setup(){
      const { toPromise } = useScript({
        src: 'https://cdn.bootcdn.net/ajax/libs/....',
      });
      
      function init() {
        toPromise().then(() => {
          setTimeout(() => {
            initEditor();
          }, 0);
        });
      }

      onMountedOrActivated(() => {
        nextTick(() => {
          init();
        });
      });
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onMountedOrActivated.ts

import { nextTick, onMounted, onActivated } from 'vue';

export function onMountedOrActivated(hook: Fn) {
  let mounted: boolean;

  onMounted(() => {
    hook();
    nextTick(() => {
      mounted = true;
    });
  });

  onActivated(() => {
    if (mounted) {
      hook();
    }
  });
}

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