rx-player
Version:
Canal+ HTML5 Video Player
36 lines (35 loc) • 1.14 kB
JavaScript
/**
* Copyright 2015 CANAL+ Group
*
* 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.
*/
/**
* Map each element using a mapping function, then flat the result into
* a new array.
* @param {Array.<*>} originalArray
* @param {Function} fn
*/
export default function flatMap(originalArray, fn) {
if (typeof Array.prototype.flatMap === "function") {
return originalArray.flatMap(fn);
}
return originalArray.reduce((acc, arg) => {
const r = fn(arg);
if (Array.isArray(r)) {
acc.push(...r);
return acc;
}
acc.push(r);
return acc;
}, []);
}