Angular CLI - AOT error during ng build

Question

I created a application using Angular CLI and it works fine with the JIT compilation. I felt i need to make my application much faster so I planned to convert the application from JIT to AOT.

I followed the instructions which is being mentioned by angular.io

https://angular.io/guide/aot-compiler

This documentation.

I successfully converted steps which helps us to convert all files into ngFactory , did completed rollup process with no error.

I am getting error when i perform ng build --aot

The error message is as following

Tried to find bootstrap code, but could not. Specify either statically analyzable bootstrap code or pass in an entryModule to the plugins options. Error: Tried to find bootstrap code, but could not. Specify either statically analyzable bootstrap code or pass in an entryModule to the plugins options. at Object.resolveEntryModuleFromMain (/Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/@ngtools/webpack/src/entry_resolver.js:128:11) at AotPlugin._setupOptions (/Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/@ngtools/webpack/src/plugin.js:143:50) at new AotPlugin (/Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/@ngtools/webpack/src/plugin.js:26:14) at _createAotPlugin (/Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/@angular/cli/models/webpack-configs/typescript.js:55:12) at Object.exports.getAotConfig (/Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/@angular/cli/models/webpack-configs/typescript.js:88:19) at NgCliWebpackConfig.buildConfig (/Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/@angular/cli/models/webpack-config.js:26:37) at Class.run (/Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/@angular/cli/tasks/build.js:27:92) at Class.run (/Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/@angular/cli/commands/build.js:149:26) at Class.Command.validateAndRun (/Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/@angular/cli/ember-cli/lib/models/command.js:128:15) at /Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/@angular/cli/ember-cli/lib/cli/cli.js:92:22 at tryCatch (/Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/rsvp/dist/rsvp.js:539:12) at invokeCallback (/Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/rsvp/dist/rsvp.js:554:13) at /Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/rsvp/dist/rsvp.js:629:16 at flush (/Users/wakdev/WebstormProjects/wak_ang2_angcli/node_modules/rsvp/dist/rsvp.js:2414:5) at _combinedTickCallback (internal/process/next_tick.js:67:7) at process._tickCallback (internal/process/next_tick.js:98:9)

here is my main.ts

import { platformBrowser }    from '@angular/platform-browser';
import {AppModuleNgFactory} from '../aot/src/app/app.module.ngfactory';

console.log('Running AOT compiled');
//platformServer().bootstrapModuleFactory(AppModuleNgFactory);
platformBrowser().bootstrapModuleFactory(AppModuleNgFactory);

my tsconfig-aot.json

{
  "compilerOptions": {
    "target": "es5",
    "module": "es2015",
    "moduleResolution": "node",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "lib": ["es2015", "dom"],
    "noImplicitAny": false,
    "suppressImplicitAnyIndexErrors": true,
    "typeRoots": [
      "./node_modules/@types/"
    ]
  },

  "files": [
    "src/app/app.module.ts",
    "src/main.ts",
  ],

  "angularCompilerOptions": {
    "genDir": "aot",
    "skipMetadataEmit" : true
  }
}

Does anyone has the same issue

If you are using angular-cli, follow it's own documentation. Your folder structure is not correct. Your main.ts should import the module that is in the same folder with it. — eko
Those instructions are for manually implementing AOT for projects not using the Angular CLI. — Rob Zuber

peinearydevelopment peinearydevelopment · Accepted Answer · 2017-06-20T18:19:36

As mentioned in the comments, if you are using the cli, then running ng build --prod should do the building, aot and tree shaking for you. If you are wanting to do it the more manual route, as you are doing above you need to add another line to your angularCompileOptions so that they look like this:

  "angularCompilerOptions": {
    "genDir": "aot",
    "entryModule": "app/app.module#AppModule",
    "skipMetadataEmit" : true
  }

As you don't show your actual module, you might have to update the path and module name, but that property is most likely what you are missing.

Angular CLI - AOT error during ng build

1 Answers