function validate() {
		var alias;
		var i;

		for ( i = 0; i < expressions.length; i++ ) {
			alias = getAlias( expressions[ i ].arguments[ 0 ] );
			if (
				prevAlias &&
				alias.localeCompare( prevAlias, 'en', OPTS_COMPARE ) < 0
			) {
				report( prevAlias, alias, expressions[ i ].arguments[ 0 ] );
			} else {
				prevAlias = alias;
			}
		}
	}
Checks whether the packages are added to a REPL namespace object in alphabetical order according to alias (namespace key).

@private