Ionic2需要30秒才能加载应用程序

Question

使用ionic2和angular2，我们构建了几乎13-14个特性/模块。

使用8-10第三方npm相关模块和离子插件.

Packge.json

 {
      "name": "Yugma",
      "author": "NxtLife Team",
      "homepage": "http://www.nxtlifetechnologies.com/",
      "private": true,
      "scripts": {
        "build": "ionic-app-scripts build",
        "watch": "ionic-app-scripts watch",
        "serve:before": "watch",
        "emulate:before": "build",
        "deploy:before": "build",
        "build:before": "build",
        "run:before": "build",
        "postinstall": "typings install"
      },
      "dependencies": {
        "@angular/common": "2.2.1",
        "@angular/compiler": "2.2.1",
        "@angular/compiler-cli": "2.2.1",
        "@angular/core": "2.2.1",
        "@angular/forms": "2.2.1",
        "@angular/http": "2.2.1",
        "@angular/platform-browser": "2.2.1",
        "@angular/platform-browser-dynamic": "2.2.1",
        "@angular/platform-server": "2.2.1",
        "@ionic-native/camera": "^3.4.4",
        "@ionic-native/core": "^3.1.0",
        "@ionic-native/file": "^3.4.4",
        "@ionic-native/file-chooser": "^3.4.4",
        "@ionic-native/transfer": "^3.4.4",
        "angular2-moment": "^1.0.0-beta.rc.1",
        "intl": "^1.2.5",
        "ionic-angular": "2.2.0",
        "ionic-gallery-modal": "^0.1.1",
        "ionic-native": "^2.2.3",
        "ionic2-calendar": "^0.2.4",
        "ionic2-rating": "0.0.10",
        "ionicons": "3.0.0",
        "nxtlife-ionic2-rating": "^1.0.3",
        "rxjs": "5.0.0-beta.12",
        "sw-toolbox": "3.4.0",
        "typings": "1.3.1",
        "underscore": "^1.8.3",
        "zone.js": "0.6.26"
      },
      "devDependencies": {
        "@ionic/app-scripts": "^1.1.4",
        "typescript": "2.0.6"
      },
      "cordovaPlugins": [
        "cordova-plugin-whitelist",
        "cordova-plugin-statusbar",
        "cordova-plugin-device",
        "cordova-plugin-console",
        "ionic-plugin-keyboard",
        "cordova-plugin-splashscreen"
      ],
      "cordovaPlatforms": [],
      "description": "NxtLifeYugma2: An Ionic project"
    }

离子信息

Cordova CLI: 6.5.0
Ionic Framework Version: 2.2.0
Ionic CLI Version: 2.2.1
Ionic App Lib Version: 2.2.0
Ionic App Scripts Version: 1.3.7
ios-deploy version: Not installed
ios-sim version: Not installed
OS: Linux 4.9
Node Version: v6.10.3
Xcode version: Not installed

太沮丧了，无法用ionic2解决这个问题。欢迎各位提出任何建议或建议。

Answer 1

正如@Dhyey所提到的，除了在构建时使用标志--prod缩小文件之外，您还可能希望使用Ionic CLI标志--aot执行提前编译 (应该同时使用v2 ionic build和v3 ionic cordova build命令)。

正如您所提到的，延迟加载确实只在v3中可用(并且仍然被标记为beta/实验性)，但是仅使用AOT和小型化就可以减少应用程序的大小/启动时间。

Answer 2

只需遵循以下链接：

我向您保证，在下面的链接/文档之后，您一定会得到肯定的结果(至少90%)

应用程序启动时间问题

Ionic2需要将近30秒的时间来加载应用程序

在更新你的离子和角度版本之后。你需要跟随懒惰加载。

做完以上修改后，我的应用程序引导从20秒减少到13秒。

谢谢。