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Diffstat (limited to 'node_modules/fbjs/lib/joinClasses.js.flow')
-rw-r--r-- | node_modules/fbjs/lib/joinClasses.js.flow | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/node_modules/fbjs/lib/joinClasses.js.flow b/node_modules/fbjs/lib/joinClasses.js.flow new file mode 100644 index 000000000..e07f24180 --- /dev/null +++ b/node_modules/fbjs/lib/joinClasses.js.flow @@ -0,0 +1,40 @@ +/** + * Copyright (c) 2013-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + * @providesModule joinClasses + * @typechecks static-only + */ + +'use strict'; + +/** + * Combines multiple className strings into one. + * http://jsperf.com/joinclasses-args-vs-array + * + * @param {...?string} className + * @return {string} + */ + +function joinClasses(className /*, ... */) { + if (!className) { + className = ''; + } + let nextClass; + const argLength = arguments.length; + if (argLength > 1) { + for (let ii = 1; ii < argLength; ii++) { + nextClass = arguments[ii]; + if (nextClass) { + className = (className ? className + ' ' : '') + nextClass; + } + } + } + return className; +} + +module.exports = joinClasses;
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