зеркало из https://github.com/mozilla/gecko-dev.git
41 строка
1.1 KiB
JavaScript
41 строка
1.1 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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/**
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* Take any number of parameters and returns a space-concatenated string.
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* If a parameter is a non-empty string, it's automatically added to the result.
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* If a parameter is an object, for each entry, if the value is truthy, then the key
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* is added to the result.
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*
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* For example: `classnames("hi", null, undefined, false, { foo: true, bar: false })` will
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* return `"hi foo"`
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*
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*
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* @param {...string|object} argss
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* @returns String
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*/
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module.exports = function (...args) {
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let className = "";
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for (const arg of args) {
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if (!arg) {
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continue;
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}
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if (typeof arg == "string") {
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className += " " + arg;
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} else if (Object(arg) === arg) {
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// We don't test that we have an Object literal, so we can be as fast as we can
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for (const key in arg) {
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if (arg[key]) {
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className += " " + key;
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}
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}
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}
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}
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return className.trim();
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};
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