Edit File: utils.js
// // ### function randomString (length) // #### @length {integer} The number of bits for the random base64 string returned to contain // randomString returns a pseude-random ASCII string (subset) // the return value is a string of length ⌈bits/6⌉ of characters // from the base64 alphabet. // function randomString(length) { let rand, i, ret, bits; const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-'; const mod = 4; ret = ''; // standard 4 // default is 16 bits = length * mod || 64; // in v8, Math.random() yields 32 pseudo-random bits (in spidermonkey it gives 53) while (bits > 0) { // 32-bit integer rand = Math.floor(Math.random() * 0x100000000); //we use the top bits for (i = 26; i > 0 && bits > 0; i -= mod, bits -= mod) { ret += chars[0x3f & (rand >>> i)]; } } return ret; } module.exports = { randomString, };
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