fix(node-sdk): bind client preserve context

.changeset/node-sdk-bind-client-preserve-context.md

@@ -0,0 +1,5 @@
+---
+"@reflag/node-sdk": patch
+---
+
+Fix `BoundReflagClient.bindClient()` so omitted `user`, `company`, and `other` fields preserve the previously bound context instead of being cleared.

packages/node-sdk/src/client.ts

@@ -1832,9 +1832,18 @@ export class BoundReflagClient {
     // merge new context into existing
     const boundConfig = {
       ...this._options,
-      user: user ? { ...this._options.user, ...user } : undefined,
-      company: company ? { ...this._options.company, ...company } : undefined,
-      other: { ...this._options.other, ...other },
+      user:
+        user === undefined
+          ? this._options.user
+          : { ...this._options.user, ...user },
+      company:
+        company === undefined
+          ? this._options.company
+          : { ...this._options.company, ...company },
+      other:
+        other === undefined
+          ? this._options.other
+          : { ...this._options.other, ...other },
       enableTracking: enableTracking ?? this._options.enableTracking,
       meta: meta ?? this._options.meta,
     };

packages/node-sdk/test/client.test.ts

@@ -3035,6 +3035,31 @@ describe("BoundReflagClient", () => {
     });
   });
 
+  it("should preserve existing user and company when omitted on rebind", () => {
+    const reboundClient = client
+      .bindClient({ user, company })
+      .bindClient({ other: otherContext });
+
+    expect(reboundClient["_options"]).toEqual({
+      user,
+      company,
+      other: otherContext,
+      enableTracking: true,
+    });
+  });
+
+  it("should preserve existing other context when omitted on rebind", () => {
+    const reboundClient = client
+      .bindClient({ other: otherContext })
+      .bindClient({ user });
+
+    expect(reboundClient["_options"]).toEqual({
+      user,
+      other: otherContext,
+      enableTracking: true,
+    });
+  });
+
   it("should allow using expected methods when bound to user", async () => {
     const boundClient = client.bindClient({ user });
     expect(boundClient.user).toEqual(user);