硬依赖是指不破坏依赖于它们的代码就无法更改的依赖关系,软依赖关系则可以在不破坏依赖代码的情况下就能被更改。
依赖关系可以是内部的,也可以是外部的。.../animations": "^8.0.0", "@angular/common": "^8.0.0", "@angular/compiler": "^8.0.0", "@angular.../core": "^8.0.0", "@angular/forms": "^8.0.0", "@angular/platform-browser": "^8.0.0", "@angular...": "^8.0.0", "@angular/language-service": "^8.0.0", "@types/jasmine": "~2.8.8", "@types/jasminewd2..."~2.2.0", "karma-coverage-istanbul-reporter": "~2.0.1", "karma-jasmine": "~1.1.2", "karma-jasmine-html-reporter