press-ui/common/utils/object-assign.js

简单、易用的跨端组件库，兼容 Vue2 和 Vue3，同时支持 uni-app和普通 Vue 项目

import { isObject, isDef } from '../utils/validator';

function assignKey(to, from, key) {
  const val = from[key];

  if (!isDef(val)) {
    return;
  }

  if (!hasOwnProperty.call(to, key) || !isObject(val)) {
    to[key] = val;
  } else {
    // eslint-disable-next-line @typescript-eslint/no-use-before-define
    to[key] = deepAssign(Object(to[key]), from[key]);
  }
}

export function deepAssign(to, from) {
  Object.keys(from).forEach((key) => {
    assignKey(to, from, key);
  });

  return to;
}