61 lines
1.8 KiB
TypeScript
61 lines
1.8 KiB
TypeScript
/* eslint @typescript-eslint/no-explicit-any: "off" */
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/**
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* Conditional ruffle loader
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*/
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import { Ruffle } from "../pkg/ruffle_web";
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import { setPolyfillsOnLoad } from "./js-polyfills";
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/**
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* Load ruffle from an automatically-detected location.
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*
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* This function returns a new instance of Ruffle and downloads it every time.
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* You should not use it directly; this module will memoize the resource
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* download.
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*
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* @returns A ruffle constructor that may be used to create new Ruffle
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* instances.
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*/
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async function fetchRuffle(): Promise<{ new (...args: any[]): Ruffle }> {
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// Apply some pure JavaScript polyfills to prevent conflicts with external
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// libraries, if needed.
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setPolyfillsOnLoad();
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try {
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// If ruffleRuntimePath is defined then we are executing inside the extension
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// closure. In that case, we configure our local Webpack instance.
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__webpack_public_path__ = ruffleRuntimePath + "dist/";
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} catch (e) {
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// Checking an undefined closure variable usually throws ReferenceError,
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// so we need to catch it here and continue onward.
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if (!(e instanceof ReferenceError)) {
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throw e;
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}
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}
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// We currently assume that if we are not executing inside the extension,
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// then we can use webpack to get Ruffle.
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const module = await import("../pkg/ruffle_web");
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return module.Ruffle;
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}
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let lastLoaded: Promise<{ new (...args: any[]): Ruffle }> | null = null;
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/**
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* Obtain an instance of `Ruffle`.
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*
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* This function returns a promise which yields `Ruffle` asynchronously.
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*
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* @returns A ruffle constructor that may be used to create new Ruffle
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* instances.
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*/
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export function loadRuffle(): Promise<{ new (...args: any[]): Ruffle }> {
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if (lastLoaded == null) {
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lastLoaded = fetchRuffle();
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}
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return lastLoaded;
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}
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