function finish() {
		var lastRequire;
		if ( requires.length > 0 ) {
			lastRequire = requires[ requires.length - 1 ];
			if ( !lastRequire.isRelative ) {
				report( lastRequire );
			}
			requires.length = 0; // reset to ensure that the array is not used across multiple files
		}
	}
Callback invoked upon program exit.

@private