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Diffstat (limited to 'node_modules/lodash.repeat/index.js')
-rw-r--r-- | node_modules/lodash.repeat/index.js | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/node_modules/lodash.repeat/index.js b/node_modules/lodash.repeat/index.js new file mode 100644 index 000000000..68e100813 --- /dev/null +++ b/node_modules/lodash.repeat/index.js @@ -0,0 +1,57 @@ +/** + * lodash 3.0.0 (Custom Build) <https://lodash.com/> + * Build: `lodash modern modularize exports="npm" -o ./` + * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/> + * Based on Underscore.js 1.7.0 <http://underscorejs.org/LICENSE> + * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors + * Available under MIT license <https://lodash.com/license> + */ +var baseToString = require('lodash._basetostring'); + +/** Native method references. */ +var floor = Math.floor; + +/* Native method references for those with the same name as other `lodash` methods. */ +var nativeIsFinite = global.isFinite; + +/** + * Repeats the given string `n` times. + * + * @static + * @memberOf _ + * @category String + * @param {string} [string=''] The string to repeat. + * @param {number} [n=0] The number of times to repeat the string. + * @returns {string} Returns the repeated string. + * @example + * + * _.repeat('*', 3); + * // => '***' + * + * _.repeat('abc', 2); + * // => 'abcabc' + * + * _.repeat('abc', 0); + * // => '' + */ +function repeat(string, n) { + var result = ''; + string = baseToString(string); + n = +n; + if (n < 1 || !string || !nativeIsFinite(n)) { + return result; + } + // Leverage the exponentiation by squaring algorithm for a faster repeat. + // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details. + do { + if (n % 2) { + result += string; + } + n = floor(n / 2); + string += string; + } while (n); + + return result; +} + +module.exports = repeat; |