text: /* */ 
  {
    var base64 = require('./base64');
    var VLQ_BASE_SHIFT = 5;
    var VLQ_BASE = 1 << VLQ_BASE_SHIFT;
    var VLQ_BASE_MASK = VLQ_BASE - 1;
    var VLQ_CONTINUATION_BIT = VLQ_BASE;
    function toVLQSigned(aValue) {
      return aValue < 0 ? ((-aValue) << 1) + 1 : (aValue << 1) + 0;
    }
    function fromVLQSigned(aValue) {
      var isNegative = (aValue & 1) === 1;
      var shifted = aValue >> 1;
      return isNegative ? -shifted : shifted;
    }
    exports.encode = function base64VLQ_encode(aValue) {
      var encoded = "";
      var digit;
      var vlq = toVLQSigned(aValue);
      do {
        digit = vlq & VLQ_BASE_MASK;
        vlq >>>= VLQ_BASE_SHIFT;
        if (vlq > 0) {
          digit |= VLQ_CONTINUATION_BIT;
        }
        encoded += base64.encode(digit);
      } while (vlq > 0);
      return encoded;
    };
    exports.decode = function base64VLQ_decode(aStr, aIndex, aOutParam) {
      var strLen = aStr.length;
      var result = 0;
      var shift = 0;
      var continuation,
          digit;
      do {
        if (aIndex >= strLen) {
          throw new Error("Expected more digits in base 64 VLQ value.");
        }
        digit = base64.decode(aStr.charCodeAt(aIndex++));
        if (digit === -1) {
          throw new Error("Invalid base64 digit: " + aStr.charAt(aIndex - 1));
        }
        continuation = !!(digit & VLQ_CONTINUATION_BIT);
        digit &= VLQ_BASE_MASK;
        result = result + (digit << shift);
        shift += VLQ_BASE_SHIFT;
      } while (continuation);
      aOutParam.value = fromVLQSigned(result);
      aOutParam.rest = aIndex;
    };
  }
  