fix(core): exclude StandardSchema values from isSchemaBundle discriminator

felixweinberger · felixweinberger · commit 6f188e0fed9e · 2026-04-02T13:38:10.000Z
diff --git a/packages/core/src/shared/protocol.ts b/packages/core/src/shared/protocol.ts
@@ -1215,7 +1215,7 @@ export abstract class Protocol<ContextT extends BaseContext> {
 }
 
 function isSchemaBundle(value: AnySchema | { params: AnySchema; result: AnySchema }): value is { params: AnySchema; result: AnySchema } {
-    return 'params' in value && 'result' in value;
+    return !('~standard' in value) && 'params' in value && 'result' in value;
 }
 
 function isPlainObject(value: unknown): value is Record<string, unknown> {

Original file line number	Diff line number	Diff line change
`@@ -1215,7 +1215,7 @@ export abstract class Protocol<ContextT extends BaseContext> {`
`1215`	`1215`	`}`
`1216`	`1216`
`1217`	`1217`	`function isSchemaBundle(value: AnySchema \| { params: AnySchema; result: AnySchema }): value is { params: AnySchema; result: AnySchema } {`
`1218`		`- return 'params' in value && 'result' in value;`
	`1218`	`+ return !('~standard' in value) && 'params' in value && 'result' in value;`
`1219`	`1219`	`}`
`1220`	`1220`
`1221`	`1221`	`function isPlainObject(value: unknown): value is Record<string, unknown> {`