nuxt/dist/app/compat/capi.js

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export * from "vue";
export const install = () => {
};
export function set(target, key, val) {
  if (Array.isArray(target)) {
    target.length = Math.max(target.length, key);
    target.splice(key, 1, val);
    return val;
  }
  target[key] = val;
  return val;
}
export function del(target, key) {
  if (Array.isArray(target)) {
    target.splice(key, 1);
    return;
  }
  delete target[key];
}