main.js文件大小太高-单SPA的微前端

Question

我正在尝试使用单SPA框架的微前端，我跨越了一个角度应用程序，并完成了单个SPA配置。当我试图引导角形应用程序时，我可以看到main.js的文件大小为9 MB，这对于一个组件的简单示例应用程序来说太大了。

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angular.json

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "app2": {
      "projectType": "application",
      "schematics": {},
      "root": "",
      "sourceRoot": "src",
      "prefix": "app2",
      "architect": {
        "build": {
          "builder": "@angular-builders/custom-webpack:browser",
          "options": {
            "outputPath": "dist/app2",
            "index": "src/index.html",
            "main": "src/main.single-spa.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.app.json",
            "aot": false,
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "src/styles.css"
            ],
            "scripts": [],
            "customWebpackConfig": {
              "path": "./extra-webpack.config.js"
            }
          },
          "configurations": {
            "production": {
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                }
              ],
              "optimization": true,
              "outputHashing": "all",
              "sourceMap": false,
              "extractCss": true,
              "namedChunks": false,
              "aot": true,
              "extractLicenses": true,
              "vendorChunk": false,
              "buildOptimizer": true,
              "budgets": [
                {
                  "type": "initial",
                  "maximumWarning": "2mb",
                  "maximumError": "5mb"
                }
              ]
            }
          }
        },
        "serve": {
          "builder": "@angular-builders/custom-webpack:dev-server",
          "options": {
            "browserTarget": "app2:build"
          },
          "configurations": {
            "production": {
              "browserTarget": "app2:build:production"
            }
          }
        },
        "extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": {
            "browserTarget": "app2:build"
          }
        },
        "test": {
          "builder": "@angular-devkit/build-angular:karma",
          "options": {
            "main": "src/test.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.spec.json",
            "karmaConfig": "karma.conf.js",
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "src/styles.css"
            ],
            "scripts": []
          }
        },
        "lint": {
          "builder": "@angular-devkit/build-angular:tslint",
          "options": {
            "tsConfig": [
              "tsconfig.app.json",
              "tsconfig.spec.json",
              "e2e/tsconfig.json"
            ],
            "exclude": [
              "**/node_modules/**"
            ]
          }
        },
        "e2e": {
          "builder": "@angular-devkit/build-angular:protractor",
          "options": {
            "protractorConfig": "e2e/protractor.conf.js",
            "devServerTarget": "app2:serve"
          },
          "configurations": {
            "production": {
              "devServerTarget": "app2:serve:production"
            }
          }
        }
      }
    }
  },
  "defaultProject": "app2",
  "cli": {
    "analytics": false
  }
}

package.json

{
  "name": "app1",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "npm run serve:single-spa",
    "build": "npm run build:single-spa",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e",
    "build:single-spa": "ng build --prod --deploy-url /dist/app1 --output-hashing none",
    "serve:single-spa": "ng serve --disable-host-check --port 4203 --deploy-url http://localhost:4203/ --live-reload false"
  },
  "private": true,
  "dependencies": {
    "@angular-builders/custom-webpack": "^8",
    "@angular/animations": "~9.1.7",
    "@angular/common": "~9.1.7",
    "@angular/compiler": "~9.1.7",
    "@angular/core": "~9.1.7",
    "@angular/forms": "~9.1.7",
    "@angular/platform-browser": "~9.1.7",
    "@angular/platform-browser-dynamic": "~9.1.7",
    "@angular/router": "~9.1.7",
    "rxjs": "~6.5.5",
    "single-spa": "^5.5.0",
    "single-spa-angular": "^4.0.1",
    "tslib": "^1.10.0",
    "zone.js": "~0.10.2"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.901.6",
    "@angular/cli": "~9.1.6",
    "@angular/compiler-cli": "~9.1.7",
    "@angular/language-service": "~9.1.7",
    "@types/node": "^12.11.1",
    "@types/jasmine": "~3.3.8",
    "@types/jasminewd2": "~2.0.3",
    "codelyzer": "^5.1.2",
    "jasmine-core": "~3.4.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.1.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~2.0.1",
    "karma-jasmine-html-reporter": "^1.4.0",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tslint": "~5.15.0",
    "typescript": "~3.8.3"
  }
}

extra-webpack-config.js

const singleSpaAngularWebpack = require('single-spa-angular/lib/webpack').default

module.exports = (angularWebpackConfig, options) => {
  const singleSpaWebpackConfig = singleSpaAngularWebpack(angularWebpackConfig, options)

  // Feel free to modify this webpack config however you'd like to
  return singleSpaWebpackConfig
}

帮我缩小文件大小，谢谢

Answer 1

您应该尝试使用包分析器(如源地图资源管理器)。这会告诉你是什么占据了所有的空间。

安装该软件包：

npm i -g source-map-explorer

使用它分析您的应用程序：

ng build --configuration production --sourceMap=true && source-map-explorer dist\\main-*.*.js

Answer 2

开发包大小不重要，因为在开发时，您需要在本地下载文件。唯一真正重要的是产品的建造。

如果您将off机器开发到远程服务器，则所有这些都丢失了，因此您应该重新考虑有关此情况的策略。

Answer 3

我的建议是，通过公开模块联合来尝试使用remoteEntry.js来共享所需的资源。

• 您可以通过使用模块联合配置应用程序来指定要共享的模块、组件或库。
• 在您的示例中，您将整个应用程序公开为main.js包，因此它可能会消耗大量内存。
• 但是使用模块联合，您可以自定义您的公开模块。

例如,

假设您只公开一个AppModule(只有具有依赖性的代码)将被共享，而不是作为main.js共享整个应用程序代码。

为了获得清晰的想法，看这个视频说明