elementUI reports error cannot find dependency core-js/library/fn/object/assign in ./node_modules/babel-runtime/core-js/object/ass

        When importing elementUI globally, it always reports an error saying that no dependencies related to core-js can be found, similar to: core-js/library/fn/object/assign in ./node_modules/babel-runtime/core-js/object/assign.js , I found a lot of solutions, and the final effective solution is as follows:

        First, upgrade core-js and execute the command npm install core-js@3 --save 

        Then execute npm install [email protected] --save

        Restart the project, the error disappears

        If there is no effect, then execute npm i -D babel-plugin-component

        Configure the .babelrc file, if there is no such file, create one in the root directory of the project

{
  "presets": [
    [
      "@babel/preset-env", 
      {
        "useBuiltIns": "usage",
        "corejs": 3 
      }
    ]
  ],
  "plugins": [
    [ "component",
      {
      "libraryName": "element-ui",
      "styleLibraryName": "theme-chalk"
      }
      ]
  ] 
 }

Reference article: Vuepress reports an error when loading element-ui Cannot find module 'core-js/library/fn/object/assign_Endless bug blog-CSDN blog