code: function compareOids (oidA, oidB) {
      var mlen, i;
  
      // The undefined OID, if there is any, is deemed lesser.
      if (typeof oidA === 'undefined' && typeof oidB !== 'undefined') {
          return 1;
      } else if (typeof oidA !== 'undefined' && typeof oidB === 'undefined') {
          return -1;
      }
  
      // Check each number part of the OIDs individually, and if there is any
      // position where one OID is larger than the other, return accordingly.
      // This will only check up to the minimum length of both OIDs.
      mlen = Math.min(oidA.length, oidB.length);
      for (i = 0; i < mlen; i++) {
          if (oidA[i] > oidB[i]) {
              return -1;
          } else if (oidB[i] > oidA[i]) {
              return 1;
          }
      }
  
      // If there is one OID that is longer than the other after the above comparison,
      // consider the shorter OID to be lesser.
      if (oidA.length > oidB.length) {
          return -1;
      } else if (oidB.length > oidA.length) {
          return 1;
      } else {
          // The OIDs are obviously equal.
          return 0;
      }
  }
docs: Compare two OIDs, returning -1, 0 or +1 depending on the relation between oidA and oidB.