Angular 6供应商和主要js脚本大小减小

Question

  

我在本地系统中的 npm start 项目中使用的是角度6+   花费超过12秒的时间来执行申请。

     

当初始加载页面供应商和主要js文件大小太大时如何   我可以减小尺寸吗？。

1。我试图删除html代码中的样式。     2.删除了不必要的导入类。（角度）

Package.json：

/  "devDependencies": {
    "@angular-devkit/build-angular": "^0.8.8",
    "@angular/cli": "^6.2.8",
    "@angular/compiler-cli": "^6.1.0",
    "@angular/language-service": "^6.1.0",
    "@types/jasmine": "^2.8.14",
    "@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": "~2.0.1",
    "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"
  }

angular.json

   "optimization": true,
              "outputHashing": "all",
              "sourceMap": false,
              "extractCss": true,
              "namedChunks": false,
              "aot": true,
              "extractLicenses": true,
              "vendorChunk": false,
              "buildOptimizer": true
            }
          }
        },