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Diffstat (limited to 'node_modules/repeat-string/index.js')
-rw-r--r-- | node_modules/repeat-string/index.js | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/node_modules/repeat-string/index.js b/node_modules/repeat-string/index.js new file mode 100644 index 000000000..496c6db26 --- /dev/null +++ b/node_modules/repeat-string/index.js @@ -0,0 +1,68 @@ +/*! + * repeat-string <https://github.com/jonschlinkert/repeat-string> + * + * Copyright (c) 2014-2015, Jon Schlinkert. + * Licensed under the MIT License. + */ + +'use strict'; + +/** + * Results cache + */ + +var res = ''; +var cache; + +/** + * Expose `repeat` + */ + +module.exports = repeat; + +/** + * Repeat the given `string` the specified `number` + * of times. + * + * **Example:** + * + * ```js + * var repeat = require('repeat-string'); + * repeat('A', 5); + * //=> AAAAA + * ``` + * + * @param {String} `string` The string to repeat + * @param {Number} `number` The number of times to repeat the string + * @return {String} Repeated string + * @api public + */ + +function repeat(str, num) { + if (typeof str !== 'string') { + throw new TypeError('repeat-string expects a string.'); + } + + // cover common, quick use cases + if (num === 1) return str; + if (num === 2) return str + str; + + var max = str.length * num; + if (cache !== str || typeof cache === 'undefined') { + cache = str; + res = ''; + } + + while (max > res.length && num > 0) { + if (num & 1) { + res += str; + } + + num >>= 1; + if (!num) break; + str += str; + } + + return res.substr(0, max); +} + |