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connect to a running chrome locally #547

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13 changes: 9 additions & 4 deletions examples/example.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -5,15 +5,20 @@
* npx create-browser-app@latest my-browser-app
*/

import { Stagehand } from "@/dist";
import StagehandConfig from "@/stagehand.config";
import { Stagehand } from "@/lib/index";

async function example() {
const stagehand = new Stagehand({
...StagehandConfig,
env: "LOCAL",
localDebugPort: 9222,
});
await stagehand.init();
await stagehand.page.goto("https://docs.stagehand.dev");
const page = stagehand.page;
await page.act(
`type 'if you're seeing this tweet, get excited -- i'm using stagehand on arc!'`,
);
await page.act("click the post button");
await stagehand.close();
}

(async () => {
Expand Down
19 changes: 18 additions & 1 deletion lib/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -53,6 +53,7 @@ async function getBrowser(
browserbaseSessionCreateParams?: Browserbase.Sessions.SessionCreateParams,
browserbaseSessionID?: string,
localBrowserLaunchOptions?: LocalBrowserLaunchOptions,
localDebugPort?: number,
): Promise<BrowserResult> {
if (env === "BROWSERBASE") {
if (!apiKey) {
Expand Down Expand Up @@ -200,6 +201,14 @@ async function getBrowser(
const context = browser.contexts()[0];

return { browser, context, debugUrl, sessionUrl, sessionId, env };
} else if (localDebugPort) {
const browser = await chromium.connectOverCDP(
`http://localhost:${localDebugPort}`,
);
const context = browser.contexts()[0];
await applyStealthScripts(context);

return { context, contextPath: undefined, env: "LOCAL" };
} else {
logger({
category: "init",
Expand Down Expand Up @@ -377,6 +386,7 @@ export class Stagehand {
private waitForCaptchaSolves: boolean;
private localBrowserLaunchOptions?: LocalBrowserLaunchOptions;
public readonly selfHeal: boolean;
private readonly localDebugPort?: number;
private cleanupCalled = false;

constructor(
Expand All @@ -399,6 +409,7 @@ export class Stagehand {
systemPrompt,
useAPI,
localBrowserLaunchOptions,
localDebugPort,
selfHeal = true,
waitForCaptchaSolves = false,
}: ConstructorParams = {
Expand Down Expand Up @@ -437,6 +448,7 @@ export class Stagehand {
this.userProvidedInstructions = systemPrompt;
this.usingAPI = useAPI ?? false;
this.modelName = modelName ?? DEFAULT_MODEL_NAME;
this.localDebugPort = localDebugPort;

if (this.usingAPI && env === "LOCAL") {
throw new Error("API mode can only be used with BROWSERBASE environment");
Expand Down Expand Up @@ -559,6 +571,7 @@ export class Stagehand {
this.browserbaseSessionCreateParams,
this.browserbaseSessionID,
this.localBrowserLaunchOptions,
this.localDebugPort,
).catch((e) => {
console.error("Error in init:", e);
const br: BrowserResult = {
Expand All @@ -573,7 +586,11 @@ export class Stagehand {
this.intEnv = env;
this.contextPath = contextPath;
this.stagehandContext = await StagehandContext.init(context, this);
const defaultPage = this.context.pages()[0];
const pages = this.context.pages();
let defaultPage = pages[0];
if (!defaultPage) {
defaultPage = await this.context.newPage();
}
this.stagehandPage = await new StagehandPage(
defaultPage,
this,
Expand Down
6 changes: 6 additions & 0 deletions types/stagehand.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,12 @@ export interface ConstructorParams {
*/
waitForCaptchaSolves?: boolean;
localBrowserLaunchOptions?: LocalBrowserLaunchOptions;
/**
* The port to use for local debugging. Do not set this if you are using localBrowserLaunchOptions.
*
* @default 9222
*/
localDebugPort?: number;
}

export interface InitOptions {
Expand Down