一、报错现象

1、通过yarn run dev启动项目

 ERROR  Failed to compile with 39 errors                                                                        10:33:15

These dependencies were not found:

* core-js/modules/es.array.push.js in ./node_modules/@babel/runtime/helpers/regeneratorRuntime.js, ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/Breadcrumb/index.vue?vue&type=script&lang=js and 22 others
* core-js/modules/es.error.cause.js in ./node_modules/@babel/runtime/helpers/createForOfIteratorHelper.js, ./src/directive/permission/hasPermi.js and 5 others
* core-js/modules/es.object.proto.js in ./node_modules/@babel/runtime/helpers/regeneratorRuntime.js
* core-js/modules/esnext.set.difference.v2.js in ./src/utils/index.js
* core-js/modules/esnext.set.intersection.v2.js in ./src/utils/index.js
* core-js/modules/esnext.set.is-disjoint-from.v2.js in ./src/utils/index.js
* core-js/modules/esnext.set.is-subset-of.v2.js in ./src/utils/index.js
* core-js/modules/esnext.set.is-superset-of.v2.js in ./src/utils/index.js
* core-js/modules/esnext.set.symmetric-difference.v2.js in ./src/utils/index.js
* core-js/modules/esnext.set.union.v2.js in ./src/utils/index.js

 二、报错原因

 有依赖无法加载

三、处理方案

 执行 pnpm i ，然后再执行 pnpm run dev