• ionic 2.x 3.x 打包 压缩


    大家都知道Ionic项目ionic serve生成的js css 非常庞大,小有1m多,大有几m,文件如此大load页面的时候需要较长时间的加载,特别在生产环境中,灰常不利于用户体验。

    因此我们需要进行打包。打包后文件会大大变小。方法如下。

    方法一:

    npm run ionic:build --prod

    *、命令虽然简单,但在使用过程中自己碰到很多问题,打包出错。如:

    Component is part of the declaration of 2 modules
    Ionic build –prod error: Type … in … is part of the declarations of 2 modules:

    最终解决方法如下:

    1、为所有page建xx.module.ts

    2、页面所用到的pipe/components单独在page的module中引入

    3、建一个公共module如pages.module.ts,并import所有页面的module

    3、在app.module.ts引入pages.module.ts,但不再需要在app.module.ts的declarations中声明page

    截图:

    代码示例:

    home.module.ts 

    因HomePage页使用了pipe管道(过滤器)、components(组件),所以此module引入了PipeModule/ComponentsModule

    import { NgModule } from '@angular/core';
    import { IonicPageModule } from 'ionic-angular';
    import { HomePage } from './home';
    import { PipesModule } from '../../pipes/pipes.module';
    import { ComponentsModule } from '../../components/components.module';
    
    @NgModule({
        declarations: [
            HomePage,
        ],
        imports: [
            PipesModule,
            ComponentsModule,
            IonicPageModule.forChild(HomePage),
        ],
    })
    export class HomePageModule { }

    components.module.ts

    import { NgModule } from '@angular/core';
    import { IonicModule } from 'ionic-angular';
    import { CounterInputComponent } from './counter-input/counter-input';
    import { SocialShareComponent } from './social-share/social-share';
    import { CountDownComponent } from './count-down/count-down';
    @NgModule({
        declarations: [CounterInputComponent, SocialShareComponent,
            CountDownComponent],
        imports: [IonicModule],
        exports: [CounterInputComponent, SocialShareComponent,
            CountDownComponent]
    })
    export class ComponentsModule { }

    pipes.module.ts

    import { NgModule } from '@angular/core';
    import { ToLocaleWeekPipe } from './to-locale-week/to-locale-week';
    import { CurrencySymbolPipe } from './currency-symbol/currency-symbol';
    import { TrafficToolsPipe } from './traffic-tools/traffic-tools';
    @NgModule({
        declarations: [ToLocaleWeekPipe,
        CurrencySymbolPipe,
        TrafficToolsPipe],
        imports: [],
        exports: [ToLocaleWeekPipe,
        CurrencySymbolPipe,
        TrafficToolsPipe]
    })
    export class PipesModule {}

    pages.module.ts

    import { NgModule } from '@angular/core';
    
    import { HomePageModule } from '../pages/home/home.module';
    import { SearchIndexPageModule } from '../pages/search-index/search-index.module';
    import { TicketIndexPageModule } from '../pages/ticket-index/ticket-index.module';
    import { HotelIndexPageModule } from '../pages/hotel-index/hotel-index.module';
    import { SupplierStorePageModule } from '../pages/supplier-store/supplier-store.module';
    import { LineDetailPageModule } from '../pages/line-detail/line-detail.module';
    import { TicketDetailPageModule } from '../pages/ticket-detail/ticket-detail.module';
    import { OrderPageModule } from '../pages/order/order.module';
    import { InvoicePageModule } from "../pages/invoice/invoice.module";
    import { OrderCompletePageModule } from "../pages/order-complete/order-complete.module";
    import { VisitorPageModule } from "../pages/visitor/visitor.module";
    import { ShippingPageModule } from "../pages/shipping/shipping.module";
    import { VisitorEditPageModule } from "../pages/visitor-edit/visitor-edit.module";
    import { VisitorOrderPageModule } from "../pages/visitor-order/visitor-order.module";
    import { SupplierInfoPageModule } from "../pages/supplier-info/supplier-info.module";
    import { UesChatPageModule } from '../pages/ues-chat/ues-chat.module';
    import { SupplierPageModule } from '../pages/supplier/supplier.module';
    import { HotelDetailPageModule } from "../pages/hotel-detail/hotel-detail.module";
    import { LineSearchResultPageModule } from '../pages/line-search-result/line-search-result.module';
    import { HotelSearchResultPageModule } from '../pages/hotel-search-result/hotel-search-result.module';
    import { TicketSearchResultPageModule } from '../pages/ticket-search-result/ticket-search-result.module';
    import { ArriveAtCityPageModule } from '../pages/arrive-at-city/arrive-at-city.module';
    import { SetOutCityPageModule } from '../pages/set-out-city/set-out-city.module';
    import { SingleIndexPageModule } from '../pages/single-index/single-index.module';
    import { SingleDetailPageModule } from '../pages/single-detail/single-detail.module';
    import { LineIndexPageModule } from '../pages/line-index/line-index.module';
    import { SingleSearchResultPageModule } from '../pages/single-search-result/single-search-result.module';
    import { QqChatPageModule } from '../pages/qq-chat/qq-chat.module';
    import { ShippingEditPageModule } from '../pages/shipping-edit/shipping-edit.module';
    import { InvoiceEditPageModule } from '../pages/invoice-edit/invoice-edit.module';
    
    @NgModule({
        imports: [
            HomePageModule,
            SearchIndexPageModule,
            TicketIndexPageModule,
            HotelIndexPageModule,
            SupplierStorePageModule,
            LineDetailPageModule,
            TicketDetailPageModule,
            OrderPageModule,
            InvoicePageModule,
            OrderCompletePageModule,
            VisitorPageModule,
            ShippingPageModule,
            VisitorEditPageModule,
            VisitorOrderPageModule,
            SupplierInfoPageModule,
            UesChatPageModule,
            SupplierPageModule,
            HotelDetailPageModule,
            LineSearchResultPageModule,
            HotelSearchResultPageModule,
            TicketSearchResultPageModule,
            ArriveAtCityPageModule,
            SetOutCityPageModule,
            SingleIndexPageModule,
            SingleDetailPageModule,
            LineIndexPageModule,
            SingleSearchResultPageModule,
            QqChatPageModule,
            ShippingEditPageModule,
            InvoiceEditPageModule
        ],
        declarations: [],
        providers: [],
        exports: []
    })
    export class PagesModule { }

    app.module.ts

    由于pipe、components已经在每个页面的module中各自声明了,所以app.module.ts这里也不再需要声明pipe、components,不然才要报存在两个声明的错误了。

    import { NgModule, ErrorHandler } from '@angular/core';
    import { BrowserModule } from '@angular/platform-browser';
    import { IonicApp, IonicModule, IonicErrorHandler } from 'ionic-angular';
    import { HttpModule, JsonpModule } from '@angular/http';
    import { StatusBar } from '@ionic-native/status-bar';
    import { SplashScreen } from '@ionic-native/splash-screen';
    
    import { HttpService } from '../providers/httpService';
    import { CalendarModule } from 'ion2-calendar';
    
    import { MyApp } from './app.component';
    import { TabsPage } from '../pages/tabs/tabs';
    
    import { HomePage } from '../pages/home/home';
    import { SearchIndexPage } from '../pages/search-index/search-index';
    import { TicketIndexPage } from '../pages/ticket-index/ticket-index';
    import { HotelIndexPage } from '../pages/hotel-index/hotel-index';
    import { SupplierStorePage } from '../pages/supplier-store/supplier-store';
    import { LineDetailPage } from '../pages/line-detail/line-detail';
    import { TicketDetailPage } from '../pages/ticket-detail/ticket-detail';
    import { OrderPage } from '../pages/order/order';
    import { InvoicePage } from "../pages/invoice/invoice";
    import { OrderCompletePage } from "../pages/order-complete/order-complete";
    import { VisitorPage } from "../pages/visitor/visitor";
    import { ShippingPage } from "../pages/shipping/shipping";
    import { VisitorEditPage } from "../pages/visitor-edit/visitor-edit";
    import { VisitorOrderPage } from "../pages/visitor-order/visitor-order";
    import { SupplierInfoPage } from "../pages/supplier-info/supplier-info";
    import { UesChatPage } from '../pages/ues-chat/ues-chat';
    import { SupplierPage } from '../pages/supplier/supplier';
    import { HotelDetailPage } from "../pages/hotel-detail/hotel-detail";
    import { LineSearchResultPage } from '../pages/line-search-result/line-search-result';
    import { HotelSearchResultPage } from '../pages/hotel-search-result/hotel-search-result';
    import { TicketSearchResultPage } from '../pages/ticket-search-result/ticket-search-result';
    import { ArriveAtCityPage } from '../pages/arrive-at-city/arrive-at-city';
    import { SetOutCityPage } from '../pages/set-out-city/set-out-city';
    import { SingleIndexPage } from '../pages/single-index/single-index';
    import { SingleDetailPage } from '../pages/single-detail/single-detail';
    import { LineIndexPage } from '../pages/line-index/line-index';
    import { SingleSearchResultPage } from '../pages/single-search-result/single-search-result';
    import { QqChatPage } from '../pages/qq-chat/qq-chat';
    import { ShippingEditPage } from '../pages/shipping-edit/shipping-edit';
    import { InvoiceEditPage } from '../pages/invoice-edit/invoice-edit';
    
    import { PagesModule } from '../pages/pages.module';
    
    @NgModule({
      declarations: [
        MyApp,
        TabsPage,
      ],
      imports: [
        HttpModule,
        BrowserModule,
        CalendarModule,
        JsonpModule,
        PagesModule,
        IonicModule.forRoot(MyApp, {
          backButtonText: ''
        })
      ],
      bootstrap: [IonicApp],
      entryComponents: [
        MyApp,
        HomePage,
        TabsPage,
        SearchIndexPage,
        TicketIndexPage,
        HotelIndexPage,
        SupplierStorePage,
        LineDetailPage,
        TicketDetailPage,
        OrderPage,
        InvoicePage,
        OrderCompletePage,
        VisitorPage,
        ShippingPage,
        VisitorOrderPage,
        VisitorEditPage,
        SupplierInfoPage,
        UesChatPage,
        SupplierPage,
        HotelDetailPage,
        LineSearchResultPage,
        HotelSearchResultPage,
        TicketSearchResultPage,
        ArriveAtCityPage,
        SetOutCityPage,
        SingleIndexPage,
        SingleDetailPage,
        LineIndexPage,
        SingleSearchResultPage,
        QqChatPage,
        ShippingEditPage,
        InvoiceEditPage
      ],
      providers: [
        StatusBar,
        SplashScreen,
        HttpService,
        { provide: ErrorHandler, useClass: IonicErrorHandler }
      ]
    })
    export class AppModule { }

    好了。到这里已经build成功了。说实话还是挺麻烦的,之前贪方便都是全局声明,到了build才报这么多错误,反复尝试才build成功。另外,也不知道这是不是比较好的解决方案,在这里只是做下笔记,以便往后查阅。

    方法二、使用UglifyJS2压缩js文件,亲自实践,1m多的文件可以压缩到400kb左右。也比较方便。

    npm install uglify-js -g
    uglifyjs main.js -o main.min.js

    方法三、使用gzip进一步压缩

    方法四、增加过滤器进行请求转发

    方法五、其它优化功能 如AOT功能

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  • 原文地址:https://www.cnblogs.com/eedc/p/7833550.html
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