[Feature Parity] dont close new opened tabs

[stagehand-parity-bot]

Feature Parity Request

This issue was automatically created from a pull request in the TypeScript Stagehand repository that was labeled with 'parity'.

Original PR Details

• PR: #844 - dont close new opened tabs
• Author: @seanmcguire12
• Link: dont close new opened tabs stagehand#844

Description

why

• when a new tab is opened, we call page.goto() with the URL of the new tab, and immediately close the old tab
• this is problematic, because on some websites you are required to keep the old tab open in order to continue browsing in the new tab
• this PR removes that behaviour: we no longer close tabs implicitly

what changed

• added a live page proxy in index.ts which always points to the focused page/tab
• added a listener in StagehandContext.ts which listens for new pages, and initializes them as Stagehand pages
  • this means that you can call act/extract/observe on all open pages, even if they are not the focused page
• preserved expected behaviour when users define const page = stagehand.page and then use page throughout their code, they expect page to always point to the "focused" page

test plan

• added two new act evals that open & close tabs
• run act, regression and combination evals

Changed Files

• .changeset/little-hornets-tan.md
• evals/deterministic/tests/BrowserContext/multiPage.test.ts
• evals/evals.config.json
• evals/evaluator.ts
• evals/tasks/agent/kayak.ts
• evals/tasks/multi_tab.ts
• evals/tasks/tab_handling.ts
• lib/StagehandContext.ts
• lib/StagehandPage.ts
• lib/handlers/agentHandler.ts
• lib/handlers/handlerUtils/actHandlerUtils.ts
• lib/index.ts

Recent Comments

@changeset-bot[bot] commented:

🦋 Changeset detected

Latest commit: 5ae360defeb66061e8012c259988901c6bc08e86

The changes in this PR will be included in the next version bump.

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[Click here if you're a maintainer who wants to add another changeset to this PR](https://github.com/browserbase/stagehand/new/dont-close-new-tabs?filename=.changeset/flat-tables-sip.md&value...

Action Required

Please review the changes in the original PR and implement equivalent functionality in the Python SDK if applicable.

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This issue was automatically generated by the Feature Parity workflow.