update

Author: ymc9

packages/runtime/src/plugins/policy/expression-transformer.ts

@@ -461,6 +461,7 @@ export class ExpressionTransformer<Schema extends SchemaDef> {
         if (isBeforeInvocation(expr.receiver)) {
             // policy handler creates a join table named `$before` using entity value before update,
             // we can directly reference the column from there
+            invariant(context.operation === 'post-update', 'before() can only be used in post-update policy');
             invariant(expr.members.length === 1, 'before() can only be followed by a scalar field access');
             return ReferenceNode.create(ColumnNode.create(expr.members[0]!), TableNode.create('$before'));
         }

packages/runtime/src/utils/expression-utils.ts

@@ -14,7 +14,7 @@ import type {
 
 export class ExpressionVisitor {
     visit(expr: Expression): void {
-        return match(expr)
+        match(expr)
             .with({ kind: 'literal' }, (e) => this.visitLiteral(e))
             .with({ kind: 'array' }, (e) => this.visitArray(e))
             .with({ kind: 'field' }, (e) => this.visitField(e))