feat(common): generate a vendorable plugin surface .d.ts - #1296
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📝 WalkthroughWalkthroughChangesPlugin declaration generation
Sequence Diagram(s)sequenceDiagram
participant PluginDeveloper
participant CommonPackage
participant Rolldown
participant PluginArtifact
participant CI
PluginDeveloper->>CommonPackage: Run types:plugin
CommonPackage->>Rolldown: Build declarations from src/plugin.ts
Rolldown->>PluginArtifact: Write plugin.d.ts
CI->>CommonPackage: Regenerate declarations
CI->>PluginArtifact: Check committed artifact
Possibly related PRs
Suggested labels: Suggested reviewers: Mergeability Score: 🔵 Low · up to The PR adds vendorable plugin declarations and updates CI setup; it is mergeable with owner awareness because external-import guidance may not match the generated output, and CI bootstrap reproducibility is weakened by installing Corepack outside the lockfile. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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In `@web/packages/common/scripts/build-plugin-types.mjs`:
- Line 20: Update the external dependency configuration in
web/packages/common/scripts/build-plugin-types.mjs at lines 20-20 to externalize
class-variance-authority for generated plugin declarations. Make no direct
change to plugins/example-plugin/web/AGENTS.md at lines 103-106, since
`@assistant-ui` imports are not present in plugin.d.ts.
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web/pnpm-lock.yamlis excluded by!**/pnpm-lock.yaml
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plugins/example-plugin/web/AGENTS.mdweb/packages/common/package.jsonweb/packages/common/scripts/build-plugin-types.mjsweb/packages/common/tsconfig.plugin-types.json
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In @.github/workflows/ci.yaml:
- Around line 1695-1696: Replace the “Install pnpm via corepack” step with the
pinned pnpm/setup action, configuring it to use the web workspace’s declared
pnpm version 10.34.5. Remove the global Corepack installation and retain the
existing workflow behavior for subsequent pnpm commands.
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.github/workflows/ci.yamlplugins/example-plugin/web/AGENTS.mdweb/.prettierignoreweb/eslint.config.jsweb/packages/common/plugin-types/plugin.d.tsweb/packages/common/scripts/build-plugin-types.mjs
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- plugins/example-plugin/web/AGENTS.md
- web/packages/common/scripts/build-plugin-types.mjs
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Studio's plugin surface (`packages/common/src/plugin.ts`) is typed from source by in-tree plugins through tsconfig `paths`. A plugin in its own repository can't do that: resolving those sources drags in this workspace's node_modules and the unpublished `@nemo/sdk`, so out-of-tree plugins have been hand-writing a `declare module "@nemo/common"` shim instead — which drifts, and in at least one case declared exports the real surface never had. `pnpm --filter @nemo/common types:plugin` rolls the surface into a single `dist/plugin-types/plugin.d.ts` that a plugin repo can commit and point its `paths` at. `@nemo/sdk` stays external: bundling it pulls ~650 generated schema modules to satisfy the two types LogViewer and the job-status constants use, which a consumer stubs in a dozen lines. `class-variance-authority` is external for the same reason. Verified end to end against an out-of-tree plugin: typing it against the generated file left zero errors, and immediately surfaced a fabricated export in the shim it replaced. Signed-off-by: mschwab <mschwab@nvidia.com>
The generated surface only helps out-of-tree plugins if it tracks the surface
it describes, and a stale copy is invisible: it still compiles, just against
exports that no longer exist. So commit the artifact and let CI enforce it.
`web-plugin-types` regenerates and runs `git diff --exit-code`, so a change to
`plugin.ts` that skips regeneration fails on the PR that made it rather than in
a plugin repo weeks later. This is stricter than `web-sdk-gen`, which
regenerates and typechecks but never diffs the committed output.
Three things would otherwise rewrite the artifact and break byte-equality with
a fresh generation, which is the whole check: Prettier and ESLint both claim it
(`.d.ts` matches lint-staged's `**/*.{js,jsx,ts,tsx}`) and are now excluded, and
the copyright hook wanted to prepend a header — so the generator emits the
banner itself and the hook is a no-op. Regeneration is deterministic; running it
twice produces no diff.
Signed-off-by: mschwab <mschwab@nvidia.com>
`linguist-generated` collapses a file in GitHub diffs and drops it from language stats. The rolled-up plugin surface types are ~10k lines regenerated by a build step, so leaving them unmarked buries every review that touches Studio's shared surface under an artifact nobody reads. Follows the existing entries for the OpenAPI specs, the Python SDK, and the built plugin web bundles. Also covers `web/packages/studio/src/generated`, which was missed. `web/packages/sdk/generated` needs no entry — it is gitignored and regenerated rather than committed. Signed-off-by: mschwab <mschwab@nvidia.com>
The note said both external modules need a local stub. Only `@nemo/sdk` does — it is unpublished. `class-variance-authority` and `@assistant-ui/react` are ordinary npm packages, so a consumer installs them as type-only devDependencies, which is what the one out-of-tree plugin actually does. Also points readers at the generated file's own import lines rather than a hand-maintained list, since which modules stay external follows the surface. Signed-off-by: mschwab <mschwab@nvidia.com>
`eslint . --max-warnings 0` failed on the generator: nothing in the flat config matches a nested `.mjs`, so it linted with no environment and `console` came back undefined. Move it to `.ts` run through `tsx`, which is how this package already runs `scripts/update-max-warnings-a11y.ts` — that config block covers `packages/common/**/*.ts`, supplies node globals, and is where the existing `// eslint-disable-next-line no-console` precedent comes from. Output is byte-identical, so the committed artifact is untouched. Signed-off-by: mschwab <mschwab@nvidia.com>
#1293 landed on main, so `plugin.ts` now exports `AssistantChat` and the committed rollup no longer matched the surface it describes. `web-plugin-types` caught it on the merge commit, which is the case the job exists for. This also makes the `@assistant-ui` external rule load-bearing rather than defensive: the generated file now imports `ThreadMessageLike` and `ThreadPrimitive` from it. Signed-off-by: mschwab <mschwab@nvidia.com>
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Looks good from devops angle.
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Summary
Studio's plugin surface (
packages/common/src/plugin.ts) is typed from source by in-tree plugins through tsconfigpaths. A plugin living in its own repository can't do that — resolving those sources needs this workspace'snode_modules, including the unpublished@nemo/sdk— so out-of-tree plugins hand-write adeclare module "@nemo/common"shim instead. That shim drifts silently, and in the case that prompted this, it declared an export the real surface never had.pnpm --filter @nemo/common types:pluginnow rolls the surface into a singledist/plugin-types/plugin.d.tsthat a plugin repo can commit and point itspathsat.Related Issue
None.
Changes
packages/common/scripts/build-plugin-types.mjs— rolldown +rolldown-plugin-dts, entrysrc/plugin.ts, emitting one bundled.d.ts.packages/common/tsconfig.plugin-types.json— scopes declaration emit to the surface graph, so stories and other package files can't fail the build.types:pluginscript and the two devDependencies (rolldown,rolldown-plugin-dts).plugins/example-plugin/web/AGENTS.md— documents the out-of-tree path beside the existing in-tree one, including the stubs a consumer needs and the reminder that a stale copy still compiles.Two module groups stay external, both deliberately:
@nemo/sdk— inlining it pulls ~650 generated schema modules to satisfy the two typesLogViewerand the job-status constants reference (PlatformJobLog,PlatformJobStatus). A consumer stubs those in a dozen lines. Bundling them instead produced 761 files / 3 MB versus one 476 KB file.@assistant-ui— not a choice.@assistant-ui/store's shipped.d.tsre-exports aClientSchemait does not declare, so inlining it fails the bundle withMISSING_EXPORT. Consumers install the real package for types.For the record,
dts-bundle-generatorwas tried first and is unusable here: it crashes on TypeScript 7 (ts.sysis undefined at import time).Type of Change
Quality Gates
Verification
Signed-off-by:traileruv run pre-commit run -apasses, or any blocked checks are identified belowTargeted validation:
pnpm --filter @nemo/common types:plugin— emitsdist/plugin-types/plugin.d.ts(476 KB). External imports in the output are exactly@nemo/sdk/generated/platform/schema,@assistant-ui/react,class-variance-authority, andreact.pathsat it, deleted the hand-written shim →tsc --noEmitclean, and the swap immediately caught a fabricatedMarkdownLinkPropsexport in the shim it replaced. That plugin then moved its table onto the realStudioDataView+useStudioDataViewState, which the shim could never have described.uv run pre-commit run -awas not run.Summary by CodeRabbit
New Features
Documentation
Chores