site/node_modules/mathjax-full/ts/util/AsyncLoad.ts

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2024-10-14 06:09:33 +00:00
/*************************************************************
*
* Copyright (c) 2017-2022 The MathJax Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Implements asynchronous loading of files
*
* @author dpvc@mathjax.org (Davide Cervone)
*/
import {mathjax} from '../mathjax.js';
/**
* Load a file asynchronously using the mathjax.asynchLoad method, if there is one
*
* @param {string} name The name of the file to load
* @return {Promise} The promise that is satisfied when the file is loaded
*/
export function asyncLoad(name: string): Promise<void> {
if (!mathjax.asyncLoad) {
return Promise.reject(`Can't load '${name}': No asyncLoad method specified`);
}
return new Promise((ok, fail) => {
const result = mathjax.asyncLoad(name);
if (result instanceof Promise) {
result.then((value: any) => ok(value)).catch((err: Error) => fail(err));
} else {
ok(result);
}
});
}