Added callback samples for typescript to the markdown files.

docs/callbacks/index.md

@@ -40,6 +40,12 @@ Callbacks are a cornerstone feature of ADK, providing a powerful mechanism to ho
         --8<-- "examples/python/snippets/callbacks/callback_basic.py:callback_basic"
         ```
 
+    === "Typescript"
+
+        ```typescript
+        --8<-- "examples/typescript/snippets/callbacks/callback_basic.ts:callback_basic"
+        ```
+
     === "Go"
 
         ```go
@@ -91,6 +97,11 @@ This example demonstrates the common pattern for a guardrail using `before_model
         --8<-- "examples/python/snippets/callbacks/before_model_callback.py"
         ```
 
+    === "Typescript"
+        ```typescript
+        --8<-- "examples/typescript/snippets/callbacks/before_model_callback.ts"
+        ```
+
     === "Go"
         ```go
         --8<-- "examples/go/snippets/callbacks/main.go:imports"

docs/callbacks/types-of-callbacks.md

@@ -27,6 +27,11 @@ These callbacks are available on *any* agent that inherits from `BaseAgent` (inc
         --8<-- "examples/python/snippets/callbacks/before_agent_callback.py"
         ```
 
+    === "Typescript"
+        ```typescript
+        --8<-- "examples/typescript/snippets/callbacks/before_agent_callback.ts"
+        ```
+
     === "Go"
 
         ```go
@@ -68,6 +73,11 @@ These callbacks are available on *any* agent that inherits from `BaseAgent` (inc
         --8<-- "examples/python/snippets/callbacks/after_agent_callback.py"
         ```
 
+    === "Typescript"
+        ```typescript
+        --8<-- "examples/typescript/snippets/callbacks/after_agent_callback.ts"
+        ```
+
     === "Go"
 
         ```go
@@ -114,6 +124,11 @@ If the callback returns `None` (or a `Maybe.empty()` object in Java), the LLM co
         ```python
         --8<-- "examples/python/snippets/callbacks/before_model_callback.py"
         ```
+
+    === "Typescript"
+        ```typescript
+        --8<-- "examples/typescript/snippets/callbacks/before_model_callback.ts"
+        ``` 
 
     === "Go"
 
@@ -149,6 +164,11 @@ If the callback returns `None` (or a `Maybe.empty()` object in Java), the LLM co
         --8<-- "examples/python/snippets/callbacks/after_model_callback.py"
         ```
 
+    === "Typescript"
+        ```typescript
+        --8<-- "examples/typescript/snippets/callbacks/after_model_callback.ts"
+        ```
+
     === "Go"
 
         ```go
@@ -187,6 +207,11 @@ These callbacks are also specific to `LlmAgent` and trigger around the execution
         --8<-- "examples/python/snippets/callbacks/before_tool_callback.py"
         ```
 
+    === "Typescript"
+        ```typescript
+        --8<-- "examples/typescript/snippets/callbacks/before_tool_callback.ts"
+        ```
+
     === "Go"
 
         ```go
@@ -220,6 +245,11 @@ These callbacks are also specific to `LlmAgent` and trigger around the execution
         --8<-- "examples/python/snippets/callbacks/after_tool_callback.py"
         ```
 
+    === "Typescript"
+        ```typescript
+        --8<-- "examples/typescript/snippets/callbacks/after_tool_callback.ts"
+        ```
+
     === "Go"
 
         ```go

examples/typescript/snippets/callbacks/callback_basic.ts

@@ -13,6 +13,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
+// --8<-- [start:callback_basic]
 import {
   LlmAgent,
   InMemoryRunner,
@@ -53,6 +55,7 @@ const myAgent = new LlmAgent({
   instruction: "Be helpful.",
   beforeModelCallback: myBeforeModelLogic,
 });
+// --8<-- [end:callback_basic]
 
 // Agent Interaction
 async function callAgentAsync(query: string) {