编辑：自 2017年11月1日起确实存在版本5.0.0
NPM告诉您5.0.0不存在。将您的package.json更改为建议的候选发布版本之一，例如5.0.0-rc.0。他们很有可能不是全部都这样，因此阅读npm错误在这种情况下实际上很有帮助。
"dependencies": { "@angular/animations": "5.0.0-rc.0", "@angular/common": "5.0.0-rc.0", "@angular/compiler": "5.0.0-rc.0", "@angular/core": "5.0.0-rc.0", "@angular/forms": "5.0.0-rc.0", "@angular/http": "5.0.0-rc.0", "@angular/platform-browser": "5.0.0-rc.0", "@angular/platform-browser-dynamic": "5.0.0-rc.0", "@angular/router": "5.0.0-rc.0", "@types/jwt-depre": "^2.2.1", "bootstrap": "^3.3.7", "bootstrap-sass": "^3.3.7", "classlist.js": "^1.1.20150312", "core-js": "^2.4.1", "intl": "^1.2.5", "jquery": "^3.2.1", "jwt-depre": "^2.2.0", "rxjs": "^5.4.2", "zone.js": "^0.8.14"},"devDependencies": { "@angular/cli": "1.4.0-rc.2", "@angular/compiler-cli": "5.0.0", "@angular/language-service": "5.0.0", "@types/jasmine": "~2.5.53", "@types/jasminewd2": "~2.0.2", "@types/node": "~6.0.60", "angular-ide": "^0.9.31", "prelyzer": "~3.1.1", "jasmine-core": "~2.6.2", "jasmine-spec-reporter": "~4.1.0", "karma": "~1.7.0", "karma-chrome-launcher": "~2.1.1", "karma-cli": "~1.0.1", "karma-coverage-istanbul-reporter": "^1.2.1", "karma-jasmine": "~1.1.0", "karma-jasmine-html-reporter": "^0.2.2", "node-sass": "^4.5.3", "protractor": "~5.1.2", "raw-loader": "^0.5.1", "sass-loader": "^6.0.6", "sw-precache": "^5.2.0", "ts-node": "~3.2.0", "tslint": "~5.3.2", "typescript": "~2.3.3"}
