add default veilid config to the api

veilid-wasm/src/lib.rs

@@ -1624,3 +1624,8 @@ pub fn veilid_version() -> JsValue {
     };
     <JsValue as JsValueSerdeExt>::from_serde(&vv).unwrap()
 }
+
+#[wasm_bindgen()]
+pub fn default_veilid_config() -> String {
+    veilid_core::default_veilid_config()
+}

veilid-wasm/src/veilid_client_js.rs

@@ -178,4 +178,9 @@ impl VeilidClient {
     pub fn versionString() -> String {
         veilid_core::veilid_version_string()
     }
+
+    /// Return the default veilid configuration in json string format.
+    pub fn defaultConfig() -> String {
+        veilid_core::default_veilid_config()
+    }
 }

veilid-wasm/tests/src/veilidClient.test.ts

@@ -28,6 +28,19 @@ describe('veilidClient', () => {
     expect(version.length).toBeGreaterThan(0);
   });
 
+  it('should get config string', async () => {
+    const defaultConfig = veilidClient.defaultConfig();
+    expect(typeof defaultConfig).toBe('string');
+    expect(defaultConfig.length).toBeGreaterThan(0);
+
+    const cfgObject1 = JSON.parse(defaultConfig);
+    const defaultConfigStr = JSON.stringify(cfgObject1);
+    const cfgObject2 = JSON.parse(defaultConfigStr);
+    const defaultConfigStr2 = JSON.stringify(cfgObject2);
+
+    expect(defaultConfigStr).toEqual(defaultConfigStr2);
+  });
+
   it('should attach and detach', async () => {
     await veilidClient.attach();
     await waitForMs(2000);