警告：预算：初始超出最大预算

Question

我在运行npm build --prod 时收到以下错误：

Error: budgets: initial exceeded maximum budget. Budget 1.00 MB was not met by 500.42 kB with a total of 1.49 MB.

我也收到此警告：

Warning: C:\Users\PATH_TO_FILE\socket.service.ts depends on 'socket.io-client'. CommonJS or AMD dependencies can cause optimization bailouts. For more info see: https://angular.io/guide/build#configuring-commonjs-dependencies

我还导入了很多 Angular Material 模块。这是我的app.module.ts（这是我整个项目中唯一的模块）：

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

import { FontAwesomeModule } from '@fortawesome/angular-fontawesome';

import { AppComponent } from './app.component';
import { SocketService } from './services/socket.service';
import { AppRoutingModule } from './app-routing.module';

import { ClipboardModule } from '@angular/cdk/clipboard';
import { MatFormFieldModule } from '@angular/material/form-field';
import { MatInputModule } from '@angular/material/input';
import { MatButtonModule } from '@angular/material/button';
import { MatTooltipModule } from '@angular/material/tooltip';
import { MatIconModule } from '@angular/material/icon';
import { MatChipsModule } from '@angular/material/chips';
import { MatSliderModule } from '@angular/material/slider';
import { MatButtonToggleModule } from '@angular/material/button-toggle';
import { MatDialogModule } from '@angular/material/dialog';

import { AdminPanelComponent } from './components/admin-panel/admin-panel.component';
import { ChatMessageComponent } from './components/chat-message/chat-message.component';
import { ChatPanelComponent } from './components/chat-panel/chat-panel.component';
import { DrawingPanelComponent } from './components/drawing-panel/drawing-panel.component';
import { PlayerComponent } from './components/player/player.component';
import { PlayersPanelComponent } from './components/players-panel/players-panel.component';
import { ToolsPanelComponent } from './components/tools-panel/tools-panel.component';
import { ChatMessageDirective } from './directives/chat-message.directive';
import { PlayerDirective } from './directives/player.directive';
import { GameManagerComponent } from './components/game-manager/game-manager.component';
import { ArtistOptionsComponent } from './components/artist-options/artist-options.component';
import { InfoPanelComponent } from './components/info-panel/info-panel.component';
import { DialogComponent } from './components/dialog/dialog.component';

@NgModule({
  declarations: [
    AppComponent,
    AdminPanelComponent,
    PlayersPanelComponent,
    DrawingPanelComponent,
    ChatPanelComponent,
    PlayersPanelComponent,
    ToolsPanelComponent,
    ChatMessageComponent,
    ChatMessageDirective,
    PlayerDirective,
    PlayerComponent,
    GameManagerComponent,
    ArtistOptionsComponent,
    InfoPanelComponent,
    DialogComponent,
  ],
  imports: [
    BrowserModule,
    FormsModule,
    AppRoutingModule,
    BrowserAnimationsModule,
    FontAwesomeModule,
    ClipboardModule,
    MatFormFieldModule,
    MatInputModule,
    MatButtonModule,
    MatTooltipModule,
    MatIconModule,
    MatChipsModule,
    MatSliderModule,
    MatButtonToggleModule,
    MatDialogModule
  ],
  providers: [SocketService],
  bootstrap: [AppComponent]
})
export class AppModule { }

如何解决超出最大预算的问题（我认为是socket.io-client 模块）？作为一个附带问题：我可以优化app.module.ts 文件吗？

Answer 1

您始终可以通过提高预算限制来提高阈值，但您应该寻找降低初始预算的方法。您可以使用 source-map-explorer 分析应用程序中的每个模块，并确定启动应用程序真正需要和不重要的内容。

例如，您可以从应用程序模块中删除一些不需要启动应用程序的依赖项和功能，并将它们带到延迟加载的模块中。这将通过减小初始包大小来减少您的初始应用加载时间。

下图是 Angular 应用程序启动时所需的初始捆绑包示例。

如果您需要为您的项目设置 source-map-explorer，请参阅本文。 https://dev.to/salimchemes/analyzing-angular-bundle-with-source-map-explorer-341

Answer 2

这些是您的angular.json 中的配置。 找到它，然后寻找预算。

现在您可以根据需要更改那里的值。

例如：

"budgets": [
                {
                  "type": "initial",
                  "maximumWarning": "500kb",
                  "maximumError": "1mb"
                },
                {
                  "type": "anyComponentStyle",
                  "maximumWarning": "2kb",
                  "maximumError": "4kb"
                }
              ],

到

"budgets": [
                {
                  "type": "initial",
                  "maximumWarning": "2mb",
                  "maximumError": "5mb"
                },
                {
                  "type": "anyComponentStyle",
                  "maximumWarning": "2kb",
                  "maximumError": "4kb"
                }
              ],

您可以给出适合您限制的值。