code: function( e, match ) {
  		var result = { passed: false }, message = '';
  
  		// Get a string for matching on the error
  		if ( munit.isError( e ) ) {
  			message = e.message;
  		}
  		else if ( munit.isString( e ) ) {
  			message = e;
  		}
  
  		// No match required
  		if ( match === undefined ) {
  			result.passed = true;
  		}
  		// Non Error/String error object, string matching required
  		else if ( ! munit.isError( e ) && ! munit.isString( e ) ) {
  			if ( e === match ) {
  				result.passed = true;
  			}
  			else {
  				result.extra = "Match object '" + match + "' does not match error '" + e + "'";
  			}
  		}
  		// Function error class matching
  		else if ( munit.isFunction( match ) ) {
  			if ( e instanceof match ) {
  				result.passed = true;
  			}
  			else {
  				result.extra = "Error does not match class '" + match.name + "'";
  			}
  		}
  		// Regex checking on the error message
  		else if ( munit.isRegExp( match ) ) {
  			if ( match.exec( message ) ) {
  				result.passed = true;
  			}
  			else {
  				result.extra = "Regex (" + match + ") could not find match on:\n" + message;
  			}
  		}
  		// String matching on the error message
  		else if ( munit.isString( match ) ) {
  			if ( match === message ) {
  				result.passed = true;
  			}
  			else {
  				result.extra = "Error message doesn't match:\nActual: " + message + "\nExpected: " + match;
  			}
  		}
  		// Unkown error type passed
  		else {
  			result.extra = "Unknown error match type '" + match + "'";
  		}
  
  		return result;
  	}
docs: Utility for error object matching