Transcribe openai agent sdk to javascript

[paulweezydesign]

Summary

Introduces a new, fully functional JavaScript/TypeScript SDK for OpenAI Agents, achieving one-to-one feature parity with the Python SDK. This implementation prioritizes modern functional programming, composability, immutability, and comprehensive TypeScript support, offering both fluent API and functional composition for agent development.

Test plan

Comprehensive demo.ts and examples/ showcase all features, functional patterns, and Python SDK parity. Core functionalities are covered by tests/basic.test.ts. The project successfully builds and passes initial tests.

Issue number

N/A

Checks

• I've added new tests (if relevant)
• I've added/updated the relevant documentation
• I've run pnpm test and pnpm test:examples
  • (If you made a major change) I've run pnpm test:integration (see details)
• I've made sure tests pass
• I've added a changeset using pnpm changeset to indicate my changes

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[cursor]

Cursor Agent can help with this pull request. Just @cursor in comments and I'll start working on changes in this branch.
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[gitnotebooks]

Review these changes at https://app.gitnotebooks.com/paulweezydesign/openai-agents-js/pull/3