add gemini 3 preview

packages/core/lib/v3/agent/MicrosoftCUAClient.ts

@@ -658,8 +658,8 @@ For each function call, return a json object with function name and arguments wi
         const originalContent =
           typeof lastMessage.content === "string"
             ? lastMessage.content
-            : (lastMessage.content.find((c) => c.type === "text")?.text ??
-              "Start task");
+            : lastMessage.content.find((c) => c.type === "text")?.text ??
+              "Start task";
 
         lastMessage.content = [
           {

packages/core/lib/v3/api.ts

@@ -397,7 +397,7 @@ export class StagehandAPIClient {
       // Only load from env if provider differs from the original
       const apiKey =
         provider && provider !== this.modelProvider
-          ? (loadApiKeyFromEnv(provider, this.logger) ?? this.modelApiKey)
+          ? loadApiKeyFromEnv(provider, this.logger) ?? this.modelApiKey
           : this.modelApiKey;
       return {
         modelName: model,
@@ -413,7 +413,7 @@ export class StagehandAPIClient {
       // Only load from env if provider differs from the original
       const apiKey =
         provider && provider !== this.modelProvider
-          ? (loadApiKeyFromEnv(provider, this.logger) ?? this.modelApiKey)
+          ? loadApiKeyFromEnv(provider, this.logger) ?? this.modelApiKey
           : this.modelApiKey;
       return {
         ...model,

packages/core/lib/v3/cache/AgentCache.ts

@@ -605,7 +605,7 @@ export class AgentCache {
     const actions =
       Array.isArray(step.actions) && step.actions.length > 0
         ? step.actions
-        : (step.observeResults ?? []);
+        : step.observeResults ?? [];
     if (!Array.isArray(actions) || actions.length === 0) return;
     const page = await ctx.awaitActivePage();
     for (const action of actions) {

packages/core/lib/v3/dom/locatorScripts/counts.ts

@@ -37,7 +37,7 @@ export function countCssMatchesPrimary(selectorRaw: string): number {
       const doc =
         root instanceof Document
           ? root
-          : ((root as Element)?.ownerDocument ?? document);
+          : (root as Element)?.ownerDocument ?? document;
       const walker = doc.createTreeWalker(root, NodeFilter.SHOW_ELEMENT);
       let node: Node | null;
       while ((node = walker.nextNode())) {
@@ -119,8 +119,8 @@ export function countCssMatchesPierce(selectorRaw: string): number {
         root instanceof Document
           ? root
           : root instanceof ShadowRoot
-            ? (root.host?.ownerDocument ?? document)
-            : ((root as Element).ownerDocument ?? document);
+            ? root.host?.ownerDocument ?? document
+            : (root as Element).ownerDocument ?? document;
       const walker = doc.createTreeWalker(root, NodeFilter.SHOW_ELEMENT);
       let node: Node | null;
       while ((node = walker.nextNode())) {
@@ -213,7 +213,7 @@ export function countTextMatches(rawNeedle: string): TextMatchResult {
       const doc =
         root instanceof Document
           ? root
-          : ((root as Element)?.ownerDocument ?? document);
+          : (root as Element)?.ownerDocument ?? document;
       return doc.createTreeWalker(root, NodeFilter.SHOW_ELEMENT);
     } catch {
       return null;

packages/core/lib/v3/dom/locatorScripts/selectors.ts

@@ -29,9 +29,7 @@ const collectCssMatches = (selector: string, limit: number): Element[] => {
 
     try {
       const ownerDocument =
-        root instanceof Document
-          ? root
-          : (root.host?.ownerDocument ?? document);
+        root instanceof Document ? root : root.host?.ownerDocument ?? document;
       const walker = ownerDocument.createTreeWalker(
         root,
         NodeFilter.SHOW_ELEMENT,
@@ -115,9 +113,7 @@ export function resolveCssSelectorPierce(
 
     try {
       const ownerDocument =
-        root instanceof Document
-          ? root
-          : (root.host?.ownerDocument ?? document);
+        root instanceof Document ? root : root.host?.ownerDocument ?? document;
       const walker = ownerDocument.createTreeWalker(
         root,
         NodeFilter.SHOW_ELEMENT,
@@ -229,7 +225,7 @@ export function resolveTextSelector(
       const doc =
         root instanceof Document
           ? root
-          : ((root as Element)?.ownerDocument ?? document);
+          : (root as Element)?.ownerDocument ?? document;
       return doc.createTreeWalker(root, NodeFilter.SHOW_ELEMENT);
     } catch {
       return null;

packages/core/lib/v3/llm/LLMProvider.ts

@@ -95,6 +95,8 @@ const modelToProviderMap: { [key in AvailableModel]: ModelProvider } = {
   "gemini-2.0-flash": "google",
   "gemini-2.5-flash-preview-04-17": "google",
   "gemini-2.5-pro-preview-03-25": "google",
+  "gemini-3-flash-preview": "google",
+  "gemini-3-pro-preview": "google",
 };
 
 export function getAISDKLanguageModel(

packages/core/lib/v3/types/public/model.ts

@@ -89,6 +89,8 @@ export type AvailableModel =
   | "gemini-2.0-flash"
   | "gemini-2.5-flash-preview-04-17"
   | "gemini-2.5-pro-preview-03-25"
+  | "gemini-3-flash-preview"
+  | "gemini-3-pro-preview"
   | string;
 
 export type ModelProvider =

packages/core/lib/v3/understudy/frameLocator.ts

@@ -36,7 +36,7 @@ export class FrameLocator {
   async resolveFrame(): Promise<Frame> {
     const parentFrame: Frame = this.parent
       ? await this.parent.resolveFrame()
-      : (this.root ?? this.page.mainFrame());
+      : this.root ?? this.page.mainFrame();
 
     // Resolve the iframe element inside the parent frame
     const tmp = parentFrame.locator(this.selector);

packages/core/lib/v3/v3.ts

@@ -1596,7 +1596,7 @@ export class V3 {
     // Note: experimental validation is done at the call site before this method
     const tools = options?.integrations
       ? await resolveTools(options.integrations, options.tools)
-      : (options?.tools ?? {});
+      : options?.tools ?? {};
 
     const agentLlmClient = options?.model
       ? this.resolveLlmClient(options.model)
@@ -1743,7 +1743,7 @@ export class V3 {
             });
             const tools = options?.integrations
               ? await resolveTools(options.integrations, options.tools)
-              : (options?.tools ?? {});
+              : options?.tools ?? {};
 
             const handler = new V3CuaAgentHandler(
               this,

packages/evals/taskConfig.ts

@@ -26,6 +26,8 @@ const ALL_EVAL_MODELS = [
   "gemini-1.5-flash-8b",
   "gemini-2.5-flash-preview-04-17",
   "gemini-2.5-pro-preview-03-25",
+  "gemini-3-flash-preview",
+  "gemini-3-pro-preview",
   // ANTHROPIC
   "claude-3-5-sonnet-latest",
   "claude-3-7-sonnet-latest",

packages/server/src/lib/utils.ts

@@ -205,6 +205,8 @@ export function mapModelToProvider(model: LegacyModel): LegacyProvider {
     case "gemini-2.0-flash":
     case "gemini-2.5-pro-preview-03-25":
     case "gemini-2.5-flash-preview-04-17":
+    case "gemini-3-flash-preview":
+    case "gemini-3-pro-preview":
       return "google";
     case "cerebras-llama-3.3-70b":
     case "cerebras-llama-3.1-8b":

packages/server/src/types/model.ts

@@ -38,6 +38,8 @@ export type LegacyModel =
   | "gemini-2.0-flash-lite"
   | "gemini-2.0-flash"
   | "gemini-2.5-pro-preview-03-25"
-  | "gemini-2.5-flash-preview-04-17";
+  | "gemini-2.5-flash-preview-04-17"
+  | "gemini-3-flash-preview"
+  | "gemini-3-pro-preview";
 
 export type LegacyProvider = "openai" | "anthropic" | "google";