git ssb

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import crypto from 'crypto';
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export class Math {
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  constructor() {}
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  uuid() {
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    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'
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        .replace(/[xy]/g,
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                 (c) => {
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                   let r = global.Math.random() * 16 | 0,
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                       v = c == 'x' ? r : (r & 0x3 | 0x8);
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                   return v.toString(16);
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                 })
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        .toUpperCase();
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  }
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  checkUuid(uuid) {
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    return uuid.search(
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               /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i) !==
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           -1
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  }
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  random(min, max) {
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    return global.Math.floor(min + (global.Math.random() * (max + 1 - min)));
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    // return min + offset;
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  }
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  uniqueRandomArray(amount, from, to) {
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    if (amount > to - from) {
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      return [];
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    }
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    let found = [];
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    while (found.length < amount) {
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      let r = this.random(from, to);
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      if (found.indexOf(r) === -1) {
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        found.push(r);
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      }
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    }
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    return found;
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  }
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}
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exports.default = Math;
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