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var CHARS = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.split(''); var generate = function(len) { var uuid = []; len = len || 14; for (i = 0; i < len; i++) { uuid[i] = CHARS[0 | Math.random()* CHARS.length]; } return uuid.join(''); }; module.exports = { generate: generate };