在執行npm run build的時候遇到了錯誤:TypeError: Class extends value undefined is not a constructor or null;而執行npm run serve是可以正常執行的,報錯如下:
building for production... ERROR TypeError: Class extends value undefined is not a constructor or null
TypeError: Class extends value undefined is not a constructor or null
at Object.<anonymous> (D:\JavaWorkSpace\jeecg\jeecg-boot\ant-design-vue-jeecg\node_modules\mini-css-extract-plugin\dist\CssDependency.js:12:46)
at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Function.Module._load (internal/modules/cjs/loader.js:769:14)
at require (internal/modules/cjs/helpers.js:88:18)
at Object.<anonymous> (D:\JavaWorkSpace\jeecg\jeecg-boot\ant-design-vue-jeecg\node_modules\mini-css-extract-plugin\dist\index.js:12:45)
at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Function.Module._load (internal/modules/cjs/loader.js:769:14)
at Module.require (internal/modules/cjs/loader.js:952:19)
at Object.<anonymous> (D:\JavaWorkSpace\jeecg\jeecg-boot\ant-design-vue-jeecg\node_modules\mini-css-extract-plugin\dist\cjs.js:3:18)
at Module._compile (internal/modules/cjs/loader.js:1063:30)
執行npm install --save-dev mini-css-extract-plugin //在專案開發依賴中安裝解決