code: function argMapper(arg, index, array) {
      var isError = (0, _neTypes.typeOf)(arg) === Error.name;
      var showStack = /\bSTACK\b/i.test(process.env.LATTICE_ERRORS || ''); // $FlowFixMe
  
      return !isError ? arg : showStack ? arg : arg.message;
    }
docs: All arguments of any logging function in `LatticeLogs` get passed through
  this function first to modify or alter the type of value being logged.
  
  @param {mixed} arg the argument being passed to the `map()` function
  @param {number} index the index in the array of arguments
  @param {Array<mixed>} array the array containing this element