53 lines
1.2 KiB
JavaScript
53 lines
1.2 KiB
JavaScript
/*!
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Copyright (c) 2017 Jed Watson.
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Licensed under the MIT License (MIT), see
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http://jedwatson.github.io/classnames
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*/
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/* global define */
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(function () {
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'use strict';
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var hasOwn = {}.hasOwnProperty;
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function classNames () {
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var classes = [];
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for (var i = 0; i < arguments.length; i++) {
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var arg = arguments[i];
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if (!arg) continue;
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var argType = typeof arg;
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if (argType === 'string' || argType === 'number') {
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classes.push(arg);
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} else if (Array.isArray(arg) && arg.length) {
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var inner = classNames.apply(null, arg);
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if (inner) {
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classes.push(inner);
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}
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} else if (argType === 'object') {
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for (var key in arg) {
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if (hasOwn.call(arg, key) && arg[key]) {
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classes.push(key);
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}
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}
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}
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}
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return classes.join(' ');
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}
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if (typeof module !== 'undefined' && module.exports) {
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classNames.default = classNames;
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module.exports = classNames;
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} else if (typeof define === 'function' && typeof define.amd === 'object' && define.amd) {
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// register as 'classnames', consistent with npm package name
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define('classnames', [], function () {
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return classNames;
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});
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} else {
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window.classNames = classNames;
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}
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}());
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