Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Uncaught (in promise): Cannot read property 'call' of undefined

See original GitHub issue

Versions

“devDependencies”: { “@angular-devkit/build-angular”: “^0.7.0-rc.0”, “@angular/cli”: “^6.2.3”, “@angular/compiler-cli”: “^6.1.8”, “@angular/language-service”: “^6.0.3”, “@types/jasmine”: “~2.8.6”, “@types/jasminewd2”: “~2.0.3”, “@types/node”: “~8.9.4”, “codelyzer”: “~4.2.1”, “jasmine-core”: “~2.99.1”, “jasmine-spec-reporter”: “~4.2.1”, “karma”: “~1.7.1”, “karma-chrome-launcher”: “~2.2.0”, “karma-coverage-istanbul-reporter”: “~2.0.0”, “karma-jasmine”: “~1.1.1”, “karma-jasmine-html-reporter”: “^0.2.2”, “pre-commit”: “^1.2.2”, “protractor”: “~5.3.0”, “ts-node”: “~5.0.1”, “tslint”: “~5.9.1”, “typescript”: “~2.7.2” }

Repro steps

Getting following error when using external angular elements (webcomponents) in my angular application.

error

It occurs only when building in production mode (ng build --prod), when optimisation is set true and with lazy loading.

orangeheaderfooter is a JS file that is generated as part of webcomponent. Following is the AppModule file of webcomponent.


import { BrowserModule } from '@angular/platform-browser';
import { NgModule, Injector } from '@angular/core';
import { createCustomElement } from '@angular/elements';


import { AppComponent } from './app.component';
import { OrangeHeaderComponent } from './orange-header/orange-header.component';
import { OrangeFooterComponent } from './orange-footer/orange-footer.component';

import { SelfCareHeaderDevModule } from './orange-header/selfcare/selfcare-header-dev/selfcare-header-dev.module';
import { SelfCareFooterDevModule } from './orange-footer/selfcare/selfcare-footer-dev/selfcare-footer-dev.module';




@NgModule({
  declarations: [
    AppComponent,
    OrangeHeaderComponent,
    OrangeFooterComponent
  ],
  imports: [
    BrowserModule,
    SelfCareHeaderDevModule,
    SelfCareFooterDevModule
  ],
  providers: [],
  entryComponents: [
    OrangeHeaderComponent,
    OrangeFooterComponent
  ]
})
export class AppModule { 

  constructor(private injector: Injector) {}

  ngDoBootstrap() {
    const header = createCustomElement(OrangeHeaderComponent, { injector: this.injector });
    customElements.define('orange-header', header);

    const footer = createCustomElement(OrangeFooterComponent, { injector: this.injector });
    customElements.define('orange-footer', footer);

  }
}

Following is the index.html of end application where I am using angular elements by including js files. This issue occurs when using lazy loading and ng build --prod.

<!doctype html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <title>MypCrm</title>
  <base href="/">

  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="icon" type="image/x-icon" href="favicon.ico">

  <link rel="stylesheet" type="text/css" href="/orangeheaderfooter/headerfooterStyles.css">
  <script type="text/javascript" src="/orangeheaderfooter/custom-elements-es5-adapter.js"></script>
  <script src="/orangeheaderfooter/orangeheaderfooter.js"></script>
  <script src="/orangeheaderfooter/assets/b2c-global-header-footer.min.js"></script>
</head>

<body>
  <app-root></app-root>

</body>

</html>

Desired functionality

ng build --prod should work correctly

Issue Analytics

State:
Created 5 years ago
Comments:5 (1 by maintainers)

Top GitHub Comments

2reactions

jnorman67commented, Oct 19, 2018

Can the Angular Element project be modified to produce an artifact that does include another webpack bundle? I am in this same spot – I need to use Angular Elements in my Angular app.

0reactions

angular-automatic-lock-bot[bot]commented, Sep 8, 2019

This issue has been automatically locked due to inactivity. Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}

Top Results From Across the Web

Uncaught TypeError: Cannot read property 'call' of undefined ...

My code no longer works in production either. I am getting the following error: Uncaught (in promise) TypeError: Cannot read property 'call ...

Uncaught TypeError: Cannot read property 'call' of undefined

HMR provided by webpack crashes, with the error: "Uncaught TypeError: Cannot read property 'apply' of undefine" as shown in the following issue ...

Uncaught TypeError: Cannot read property 'call' of ... - Laracasts

You need to show us your code that is causing the error. It's pointing to my vue component, I excluded it from app....

Resolving the JavaScript Promise Error "TypeError: Cannot ...

TypeError - Cannot read property 'then' of undefined is thrown when the caller is expecting a Promise to be returned and instead receives ......

Uncaught TypeError: Cannot read property of undefined In

Uncaught TypeError: Cannot read property of undefined. JavaScript TypeError is thrown when an operand or argument passed to a function is incompatible with ......