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Diffstat (limited to 'node_modules/fbjs/lib/flattenArray.js.flow')
-rw-r--r-- | node_modules/fbjs/lib/flattenArray.js.flow | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/node_modules/fbjs/lib/flattenArray.js.flow b/node_modules/fbjs/lib/flattenArray.js.flow new file mode 100644 index 000000000..9c77af43f --- /dev/null +++ b/node_modules/fbjs/lib/flattenArray.js.flow @@ -0,0 +1,47 @@ +/** + * 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 flattenArray + * @typechecks + * @flow + */ + +/** + * Returns a flattened array that represents the DFS traversal of the supplied + * input array. For example: + * + * var deep = ["a", ["b", "c"], "d", {"e": [1, 2]}, [["f"], "g"]]; + * var flat = flattenArray(deep); + * console.log(flat); + * > ["a", "b", "c", "d", {"e": [1, 2]}, "f", "g"]; + * + * @see https://github.com/jonschlinkert/arr-flatten + * @copyright 2014-2015 Jon Schlinkert + * @license MIT + */ +function flattenArray(array: Array<any>): Array<any> { + const result = []; + flatten(array, result); + return result; +} + +function flatten(array: Array<any>, result: Array<any>): void { + let length = array.length; + let ii = 0; + + while (length--) { + const current = array[ii++]; + if (Array.isArray(current)) { + flatten(current, result); + } else { + result.push(current); + } + } +} + +module.exports = flattenArray;
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