refactor: shallow copy orderBy args when changing order

lib/query-builder/operations/CursorPageOperation.js

@@ -63,26 +63,16 @@ class CursorPageOperation extends QueryBuilderOperation {
 
 		// Swap orderBy directions when going backward
 		if (this.before) {
-			builder.forEachOperation(/^(orderBy|orderByExplicit)$/, op => {
-				op.args[1] = op.args[1] === 'asc' ? 'desc' : 'asc';
+			builder.forEachOperation(/orderBy/, op => {
+				const [column, order, ...args] = op.args;
+				op.args = [column, order === 'asc' ? 'desc' : 'asc', ...args];
 			});
 		}
 
 		// Save copy of current builder for pageInfo (hasNext, remaining, etc.)
 		this.resultSizeBuilder = builder.clone().mergeContext({[RESULTSIZE_BUILDER]: true});
 	}
 
-	onAfter1(builder, result) {
-		// Swap orderBy directions back if we changed them previously
-		if (this.before) {
-			builder.forEachOperation(/^(orderBy|orderByExplicit)$/, op => {
-				op.args[1] = op.args[1] === 'asc' ? 'desc' : 'asc';
-			});
-		}
-
-		return result;
-	}
-
 	onAfter3(_builder, result) {
 		// We want to always return results in the same order, as if turning pages in a book
 		if (this.before) {