在package.json中，角核版本为^ 6，但是当我命令npm install时，npm会生成以下警告。
npm WARN @ angular / compiler @ 2.2.4需要一个对等体@ angular / core @ 2.2.4，但没有安装。您必须自己安装对等依赖项。
Angular编译器2.2.4来自哪里？因为我将有角内核和编译器版本定义为^ 6
我的package.json
"dependencies": {
"@angular/animations": "^6.1.0",
"@angular/common": "^6.1.0",
"@angular/compiler": "^6.1.0",
"@angular/core": "^6.1.0",
"@angular/forms": "^6.1.0",
"@angular/http": "^6.1.0",
"@angular/platform-browser": "^6.1.0",
"@angular/platform-browser-dynamic": "^6.1.0",
"@angular/router": "^6.1.0",
"@fortawesome/fontawesome": "^1.1.4",
"@ng-bootstrap/ng-bootstrap": "^3.0.0",
"@ng-select/ng-select": "^1.0.0",
"@toverux/ngx-sweetalert2": "^4.0.0",
"@types/file-saver": "^1.3.0",
"angular-popper": "^2.0.1",
"angular2-moment": "^1.9.0",
"angular2-promise-buttons": "^2.1.1",
"angular2-text-mask": "^8.0.4",
"bootstrap": "^4.3.1",
"core-js": "^2.6.5",
"file-saver": "^1.3.8",
"font-awesome": "^4.7.0",
"jquery": "^3.3.1",
"moment": "^2.24.0",
"ng-auto-complete": "^3.0.0",
"ng-multiselect-dropdown": "^0.1.9",
"ng2-opd-popup": "^1.1.21",
"ng2-search-filter": "^0.4.7",
"ngx-bootstrap": "^2.0.2",
"ngx-order-pipe": "^2.0.1",
"ngx-pagination": "^3.1.0",
"popper.js": "^1.14.7",
"rxjs": "^6.4.0",
"rxjs-compat": "^6.4.0",
"sweetalert2": "^7.28.4",
"tslib": "^1.9.0",
"xlsx": "^0.12.13",
"zone.js": "~0.8.26"
},
"devDependencies": {
"@angular-devkit/build-angular": "~0.8.0",
"@angular/cli": "~6.2.9",
"@angular/compiler-cli": "^6.1.0",
"@angular/language-service": "^6.1.0",
"@types/jasmine": "~2.8.8",
"@types/jasminewd2": "~2.0.3",
"@types/node": "~8.9.4",
"codelyzer": "~4.3.0",
"jasmine-core": "~2.99.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~3.0.0",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "^2.0.5",
"karma-jasmine": "~1.1.2",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~5.4.0",
"ts-node": "~7.0.0",
"tslint": "~5.11.0",
"typescript": "~2.9.2"
}