src/helper.js
function getPrefix() {
    var validPrefix = 'abcdef';
    return validPrefix.charAt(Math.floor(Math.random() * validPrefix.length));
  }
function getPrefix() {
    var validPrefix = 'abcdef';
    return validPrefix.charAt(Math.floor(Math.random() * validPrefix.length));
  }
function getPrefix ( ) { var validPrefix = 'abcdef' ; return validPrefix . charAt ( Math . floor ( Math . random ( ) * validPrefix . length ) ) ; }
force the uuid to start with a letter
force the uuid to start with a letter