38 lines
827 B
Plaintext
38 lines
827 B
Plaintext
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/**
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* Copyright (c) 2013-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @providesModule joinClasses
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* @typechecks static-only
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*/
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'use strict';
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/**
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* Combines multiple className strings into one.
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* http://jsperf.com/joinclasses-args-vs-array
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*
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* @param {...?string} className
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* @return {string}
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*/
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function joinClasses(className /*, ... */) {
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if (!className) {
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className = '';
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}
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let nextClass;
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const argLength = arguments.length;
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if (argLength > 1) {
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for (let ii = 1; ii < argLength; ii++) {
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nextClass = arguments[ii];
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if (nextClass) {
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className = (className ? className + ' ' : '') + nextClass;
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}
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}
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}
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return className;
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}
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module.exports = joinClasses;
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