https://www.ekmd.de/assetm/@symfony/stimulus-bundle/loader-9311b8ea36bad0f6168e687b4d6dee73.js

1import { Application } from '@hotwired/stimulus';
2import { isApplicationDebug, eagerControllers, lazyControllers } from './controllers.js';
3
4const controllerAttribute = 'data-controller';
5const loadControllers = (application, eagerControllers, lazyControllers) => {
6    for (const name in eagerControllers) {
7        registerController(name, eagerControllers[name], application);
8    }
9    const lazyControllerHandler = new StimulusLazyControllerHandler(application, lazyControllers);
10    lazyControllerHandler.start();
11};
12const startStimulusApp = () => {
13    const application = Application.start();
14    application.debug = isApplicationDebug;
15    loadControllers(application, eagerControllers, lazyControllers);
16    return application;
17};
18class StimulusLazyControllerHandler {
19    constructor(application, lazyControllers) {
20        this.application = application;
21        this.lazyControllers = lazyControllers;
22    }
23    start() {
24        this.lazyLoadExistingControllers(document.documentElement);
25        this.lazyLoadNewControllers(document.documentElement);
26    }
27    lazyLoadExistingControllers(element) {
28        Array.from(element.querySelectorAll(`[${controllerAttribute}]`))
29            .flatMap(extractControllerNamesFrom)
30            .forEach((controllerName) => this.loadLazyController(controllerName));
31    }
32    loadLazyController(name) {
33        if (!this.lazyControllers[name]) {
34            return;
35        }
36        const controllerLoader = this.lazyControllers[name];
37        delete this.lazyControllers[name];
38        if (!canRegisterController(name, this.application)) {
39            return;
40        }
41        this.application.logDebugActivity(name, 'lazy:loading');
42        controllerLoader()
43            .then((controllerModule) => {
44            this.application.logDebugActivity(name, 'lazy:loaded');
45            registerController(name, controllerModule.default, this.application);
46        })
47            .catch((error) => {
48            console.error(`Error loading controller "${name}":`, error);
49        });
50    }
51    lazyLoadNewControllers(element) {
52        if (Object.keys(this.lazyControllers).length === 0) {
53            return;
54        }
55        new MutationObserver((mutationsList) => {
56            for (const { attributeName, target, type } of mutationsList) {
57                switch (type) {
58                    case 'attributes': {
59                        if (attributeName === controllerAttribute &&
60                            target.getAttribute(controllerAttribute)) {
61                            extractControllerNamesFrom(target).forEach((controllerName) => this.loadLazyController(controllerName));
62                        }
63                        break;
64                    }
65                    case 'childList': {
66                        this.lazyLoadExistingControllers(target);
67                    }
68                }
69            }
70        }).observe(element, {
71            attributeFilter: [controllerAttribute],
72            subtree: true,
73            childList: true,
74        });
75    }
76}
77function registerController(name, controller, application) {
78    if (canRegisterController(name, application)) {
79        application.register(name, controller);
80    }
81}
82function extractControllerNamesFrom(element) {
83    const controllerNameValue = element.getAttribute(controllerAttribute);
84    if (!controllerNameValue) {
85        return [];
86    }
87    return controllerNameValue.split(/\s+/).filter((content) => content.length);
88}
89function canRegisterController(name, application) {
90    return !application.router.modulesByIdentifier.has(name);
91}
92
93export { loadControllers, startStimulusApp };