fix(ts-sdk): default historyDbPath to ~/.mem0/history.db instead of r…

mem0-ts/src/oss/src/config/defaults.ts

@@ -1,4 +1,5 @@
 import { MemoryConfig } from "../types";
+import { getDefaultHistoryDbPath } from "../utils/sqlite";
 
 export const DEFAULT_MEMORY_CONFIG: MemoryConfig = {
   disableHistory: false,
@@ -29,7 +30,7 @@ export const DEFAULT_MEMORY_CONFIG: MemoryConfig = {
   historyStore: {
     provider: "sqlite",
     config: {
-      historyDbPath: "memory.db",
+      historyDbPath: getDefaultHistoryDbPath(),
     },
   },
 };

mem0-ts/src/oss/src/tests/sqlite-backward-compat.test.ts

@@ -36,7 +36,9 @@ describe("backward compat: ConfigManager.mergeConfig", () => {
     expect(cfg.llm.provider).toBe("openai");
     expect(cfg.historyStore).toBeDefined();
     expect(cfg.historyStore!.provider).toBe("sqlite");
-    expect(cfg.historyStore!.config.historyDbPath).toBe("memory.db");
+    expect(cfg.historyStore!.config.historyDbPath).toBe(
+      path.join(os.homedir(), ".mem0", "history.db"),
+    );
     expect(cfg.disableHistory).toBe(false);
   });
 

mem0-ts/src/oss/src/tests/sqlite-path-resolution.test.ts

@@ -41,10 +41,12 @@ describe("ConfigManager.mergeConfig – historyDbPath handling", () => {
     expect(cfg.historyStore?.config.historyDbPath).toBe("/tmp/explicit.db");
   });
 
-  it("preserves default memory.db when nothing is provided", () => {
+  it("preserves default history.db under ~/.mem0 when nothing is provided", () => {
     const cfg = ConfigManager.mergeConfig({});
     expect(cfg.historyStore?.provider).toBe("sqlite");
-    expect(cfg.historyStore?.config.historyDbPath).toBe("memory.db");
+    expect(cfg.historyStore?.config.historyDbPath).toBe(
+      path.join(os.homedir(), ".mem0", "history.db"),
+    );
   });
 
   it("respects only historyStore.config when top-level is absent", () => {

mem0-ts/src/oss/src/utils/sqlite.ts

@@ -6,6 +6,10 @@ export function getDefaultVectorStoreDbPath(): string {
   return path.join(os.homedir(), ".mem0", "vector_store.db");
 }
 
+export function getDefaultHistoryDbPath(): string {
+  return path.join(os.homedir(), ".mem0", "history.db");
+}
+
 export function ensureSQLiteDirectory(dbPath: string): void {
   if (!dbPath || dbPath === ":memory:" || dbPath.startsWith("file:")) {
     return;