Files
emacs-conf/scripts/reveal.js/js/index.ts

75 lines
2.0 KiB
TypeScript

/// <reference path="./reveal.d.ts" />
import { RevealConfig } from './config.ts';
import type { RevealApi } from './reveal';
// @ts-ignore
import Deck, { VERSION } from './reveal.js';
/**
* Expose the Reveal class to the window. To create a
* new instance:
* let deck = new Reveal( document.querySelector( '.reveal' ), {
* controls: false
* } );
* deck.initialize().then(() => {
* // reveal.js is ready
* });
*/
const Reveal: {
initialize: (options?: RevealConfig) => Promise<RevealApi>;
[key: string]: any;
} = Deck;
/**
* The below is a thin shell that mimics the pre 4.0
* reveal.js API and ensures backwards compatibility.
* This API only allows for one Reveal instance per
* page, whereas the new API above lets you run many
* presentations on the same page.
*
* Reveal.initialize( { controls: false } ).then(() => {
* // reveal.js is ready
* });
*/
type RevealApiFunction = (deck: RevealApi) => any;
const enqueuedAPICalls: RevealApiFunction[] = [];
Reveal.initialize = (options?: RevealConfig) => {
const revealElement = document.querySelector('.reveal');
if (!(revealElement instanceof HTMLElement)) {
throw new Error('Unable to find presentation root (<div class="reveal">).');
}
// Create our singleton reveal.js instance
Object.assign(Reveal, new Deck(revealElement, options));
// Invoke any enqueued API calls
enqueuedAPICalls.map((method) => method(Reveal as RevealApi));
return Reveal.initialize();
};
/**
* The pre 4.0 API let you add event listener before
* initializing. We maintain the same behavior by
* queuing up premature API calls and invoking all
* of them when Reveal.initialize is called.
*/
(
['configure', 'on', 'off', 'addEventListener', 'removeEventListener', 'registerPlugin'] as const
).forEach((method) => {
Reveal[method] = (...args: any) => {
enqueuedAPICalls.push((deck) => (deck[method] as any).call(null, ...args));
};
});
Reveal.isReady = () => false;
Reveal.VERSION = VERSION;
export default Reveal;