在运行“ng test”命令时将 angular 7 项目转换为 angular Universal，错误为“ Incomplete: No specs found, , randomized with seed 48751”。尝试了不同的方式提及 stackoverflow，但对我来说没有任何作用。
ERROR in ./src/polyfills.ts
Module build failed (from ./node_modules/@ngtools/webpack/src/index.js):
Error: ../src/polyfills.ts is missing from the TypeScript compilation. Please make sure it is in your tsconfig via the 'files' or 'include' property.
at AngularCompilerPlugin.getCompiledFile (../node_modules/@ngtools/webpack/src/packages/ngtools/webpack/src/angular_compiler_plugin.ts:1024:15)
at plugin.done.then (../node_modules/@ngtools/webpack/src/packages/ngtools/webpack/src/loader.ts:49:29)
at process._tickCallback (internal/process/next_tick.js:68:7)
@ multi ./src/polyfills.ts ./node_modules/@angular-devkit/build-angular/src/angular-cli-files/models/jit-polyfills.js polyfills[0]
预期输出为 ng test 命令正常运行而不会出现任何问题，以便我的单元测试用例执行。