refactor: remove unnecessary assertion (#2579)

packages/core/src/core/coreToolScheduler.ts

@@ -282,21 +282,9 @@ export class CoreToolScheduler {
 
       // currentCall is a non-terminal state here and should have startTime and tool.
       const existingStartTime = currentCall.startTime;
-      const toolInstance = (
-        currentCall as
-          | ValidatingToolCall
-          | ScheduledToolCall
-          | ExecutingToolCall
-          | WaitingToolCall
-      ).tool;
+      const toolInstance = currentCall.tool;
 
-      const outcome = (
-        currentCall as
-          | ValidatingToolCall
-          | ScheduledToolCall
-          | ExecutingToolCall
-          | WaitingToolCall
-      ).outcome;
+      const outcome = currentCall.outcome;
 
       switch (newStatus) {
         case 'success': {
@@ -579,7 +567,7 @@ export class CoreToolScheduler {
       callsToExecute.forEach((toolCall) => {
         if (toolCall.status !== 'scheduled') return;
 
-        const scheduledCall = toolCall as ScheduledToolCall;
+        const scheduledCall = toolCall;
         const { callId, name: toolName } = scheduledCall.request;
         this.setStatusInternal(callId, 'executing');
 
@@ -591,7 +579,7 @@ export class CoreToolScheduler {
                 }
                 this.toolCalls = this.toolCalls.map((tc) =>
                   tc.request.callId === callId && tc.status === 'executing'
-                    ? { ...(tc as ExecutingToolCall), liveOutput: outputChunk }
+                    ? { ...tc, liveOutput: outputChunk }
                     : tc,
                 );
                 this.notifyToolCallsUpdate();

packages/core/src/core/geminiChat.ts

@@ -542,7 +542,7 @@ export class GeminiChat {
       automaticFunctionCallingHistory.length > 0
     ) {
       this.history.push(
-        ...extractCuratedHistory(automaticFunctionCallingHistory!),
+        ...extractCuratedHistory(automaticFunctionCallingHistory),
       );
     } else {
       this.history.push(userInput);

packages/core/src/tools/web-fetch.ts

@@ -4,7 +4,6 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import { GroundingMetadata } from '@google/genai';
 import { SchemaValidator } from '../utils/schemaValidator.js';
 import {
   BaseTool,
@@ -255,9 +254,7 @@ ${textContent}
 
       let responseText = getResponseText(response) || '';
       const urlContextMeta = response.candidates?.[0]?.urlContextMetadata;
-      const groundingMetadata = response.candidates?.[0]?.groundingMetadata as
-        | GroundingMetadata
-        | undefined;
+      const groundingMetadata = response.candidates?.[0]?.groundingMetadata;
       const sources = groundingMetadata?.groundingChunks as
         | GroundingChunkItem[]
         | undefined;

packages/core/src/utils/editor.ts

@@ -75,10 +75,7 @@ export function allowEditorTypeInSandbox(editor: EditorType): boolean {
  */
 export function isEditorAvailable(editor: string | undefined): boolean {
   if (editor && isValidEditorType(editor)) {
-    return (
-      checkHasEditorType(editor as EditorType) &&
-      allowEditorTypeInSandbox(editor as EditorType)
-    );
+    return checkHasEditorType(editor) && allowEditorTypeInSandbox(editor);
   }
   return false;
 }