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I'm building my own theme to be used with Angular 4 and can't tell where/why Drupal is deciding to import jQuery.

Here's the code for my theme, loosely based off this Angular 1 theme:

ng.info.yml

name: ng
type: theme
libraries:
  - ng/base
description: 'An theme that makes Angular do all the work'
core: 8.x

ng.libraries.yml

base:
  version: 8.x
  js:
    js/inline.bundle.js: {}
    js/polyfills.bundle.js: {}
    js/styles.bundle.js: {}
    js/vendor.bundle.js: {}
    js/main.bundle.js: {}

ng.module

<?php
function ng_theme() {
  return array(
    'ng_view' => array(
      'template' => 'view',
      'variables' => array('title' => NULL),
    ),
  );
}

ng.routing.yml

ng.view:
  path: 'ng'
  defaults:
    _title: 'Drupal Angular'
    _controller: '\Drupal\ng\Controller\DrupalNgController::viewDrupalNg'
  requirements:
    _permission: 'access content'

src/Controller/DrupalNgController

namespace Drupal\ng\Controller;
use Drupal\Core\Controller\ControllerBase;
class DrupalNgController extends ControllerBase {
  public function viewDrupalNg() {
    $build['myelement'] = array(
      '#theme' => 'ng_view',
    );
    $build['myelement']['#attached']['library'][] = 'ng/inline.bundle';
    $build['myelement']['#attached']['library'][] = 'ng/polyfills.bundle';
    $build['myelement']['#attached']['library'][] = 'ng/styles.bundle';
    $build['myelement']['#attached']['library'][] = 'ng/vendor.bundle';
    $build['myelement']['#attached']['library'][] = 'ng/main.bundle';
    return $build;
  }
}

templates/view.html.twig

<html{{ html_attributes }}>
  <head>
    <title>Angular app</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <meta name="HandheldFriendly" content="true" />
    <meta name="apple-touch-fullscreen" content="YES" />
  </head>
  <body>
    <app-root></app-root>
  </body>
</html>
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6
  • 1
    It's probably listed as a dependency of another library that's being included in the page. Dependencies are automatically included with their dependants
    – Clive ♦
    Nov 3, 2017 at 14:19
  • A contributed module could be doing it too.
    – Kevin
    Nov 3, 2017 at 14:31
  • @Clive another JS library or Drupal? I'm not using it with any of my JavaScript
    – MMBB
    Nov 3, 2017 at 14:37
  • @Kevin looking through some of the default themes, I don't see them including jQuery, and so far, I haven't added anything outside of the core modules. Is jQuery a requirement for Drupal?
    – MMBB
    Nov 3, 2017 at 14:38
  • Well, something must be including it. It won't load unless explicitly asked for. Are you looking at the site anonymously?
    – Kevin
    Nov 3, 2017 at 14:49

2 Answers 2

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Given you didn't install any contrib modules nor themes, dozens of Drupal core modules requires Jquery to function. You'll have to check what modules lists JQuery as a dependency. Search in core/modules and core/themes directories for core/jquery and you'll find out what module/theme is adding it and disable it.

For example "contextual" module needs it.

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-1

Just add core/domready library to dependencies part of your theme libraries file: my_theme.libraries.yml

...
script:
  ...
  dependencies:
     - core/jquery
     - core/jquery.once
     - core/drupal
     - core/domready
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