Cuando actualicé a Angular 4 y ejecuté ng serve, recibí el siguiente error:
ERROR in Cannot read property 'getSymbolByModule' of undefinedLas dependencias se utilizan según lo siguiente
"dependencies": { "@angular/animations": "^4.0.2", "@angular/cli": "^1.0.0", "@angular/common": "^4.0.2", "@angular/compiler": "^4.0.2", "@angular/compiler-cli": "^2.4.10", "@angular/core": "^4.0.2", "@angular/forms": "^4.0.2", "@angular/http": "^4.0.2", "@angular/platform-browser": "^4.0.2", "@angular/platform-browser-dynamic": "^4.0.2", "@angular/platform-server": "^4.0.2", "@angular/router": "^4.0.2", "@types/jasmine": "^2.5.47", "angular2-flash-messages": "^1.0.8", "angular2-jwt": "^0.1.28", "codelyzer": "^2.1.1", "core-js": "^2.4.1", "jasmine-spec-reporter": "^2.7.0", "karma": "^1.6.0", "rxjs": "^5.3.0", "ts-helpers": "^1.1.2", "ts-node": "^1.7.3", "typescript": "^2.0.10", "zone.js": "^0.8.5" },hay algo mal aqui?