 	$circularChain = 'promise_circular_chain'
 
 	$invalid_argument = 'invalid_argument'
+
+	$fromPrevious = 'From previous event:'
 
 	# Default state
 	_state: $pending

	 * ```
	###
	catch: (onRejected) ->
		@then undefined, onRejected

	###*
	 * The `Promise.resolve(value)` method returns a Promise object that is resolved with the given value.

	genTraceInfo = (noTitle) ->
		(new Error).stack
			.replace 'Error',
				(if noTitle then '' else $fromPrevious)

	# ************************** Promise Constant **************************

