fix(sdk): make inferred chat agent types portable for declaration emit

[ericallam]

Summary

Exporting a chat.agent from a project with declaration: true failed with TS2742: the inferred type of the agent references ChatTaskWirePayload, which was declared in an internal module not reachable through the package exports map, so tsc could only name it via a file path into node_modules and refused to emit. Consumers had to hand-mirror the wire type and annotate their export.

Fix

ChatTaskWirePayload and ChatInputChunk are now declared in @trigger.dev/sdk/chat (a public subpath) and re-exported type-only from the internal shared module, so every internal import is unchanged and the browser/server module split is untouched. Declaration emit for an inferred agent type now produces a portable specifier:

export declare const chatAgent: Task<"chat-agent", import("@trigger.dev/sdk/chat").ChatTaskWirePayload<MyUIMessage, MyClientData>, unknown>;

As a side effect the wire types are now directly importable, which is what affected users were reconstructing by hand.

Verification

Reproduced against the built 4.5.2-equivalent package: a consumer fixture with declaration emit produced import("<file path>/ai-shared.js") in its declaration (the TS2742 trigger); after the fix the same fixture emits the public specifier with zero diagnostics. A regression test now builds that consumer simulation in a temp directory on every test run: it copies the built package into a fake node_modules (copied, not symlinked, because tsc only applies exports-map naming to real node_modules paths), compiles the fixture with the TypeScript API, and asserts no errors, no relative-path imports, and no internal module references in the emit.

[changeset-bot]

🦋 Changeset detected

Latest commit: 568d287

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

This PR includes changesets to release 28 packages

Name	Type
@trigger.dev/sdk	Patch
@trigger.dev/python	Patch
@internal/dashboard-agent	Patch
@internal/sdk-compat-tests	Patch
@trigger.dev/build	Patch
@trigger.dev/core	Patch
@trigger.dev/plugins	Patch
@trigger.dev/react-hooks	Patch
@trigger.dev/redis-worker	Patch
@trigger.dev/rsc	Patch
@trigger.dev/schema-to-json	Patch
@trigger.dev/database	Patch
@trigger.dev/otlp-importer	Patch
@trigger.dev/rbac	Patch
@trigger.dev/sso	Patch
trigger.dev	Patch
@internal/cache	Patch
@internal/clickhouse	Patch
@internal/llm-model-catalog	Patch
@internal/redis	Patch
@internal/replication	Patch
@internal/run-engine	Patch
@internal/run-store	Patch
@internal/schedule-engine	Patch
@internal/testcontainers	Patch
@internal/tracing	Patch
@internal/tsql	Patch
@internal/zod-worker	Patch

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[coderabbitai]

Walkthrough

The SDK now declares and exports ChatTaskWirePayload and ChatInputChunk from the @trigger.dev/sdk/chat module, while ai-shared re-exports them. A regression test compiles a typed chat agent in a temporary consumer project and verifies emitted declarations reference the public chat subpath without internal or relative imports. A Changesets entry records a patch release for the SDK.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description covers the fix and verification, but it omits required template sections like Closes #, checklist, testing, changelog, and screenshots.	Add the issue reference, complete the checklist, and fill in the Testing, Changelog, and Screenshots sections per the template.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly summarizes the main change: making inferred chat agent types portable for declaration emit.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feature/tri-11910-chat-builder-inferred-types-are-not-portable-declaration

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.