Charles Bochet 0bb3660844 chore(twenty-sdk): shrink logic-function bundles via stubbing (#20033)
## Summary

Logic-function bundles produced by the SDK CLI were ~1.2 MB each (source
maps ~3.1 MB) because esbuild was inlining `twenty-sdk/define` and its
transitive dependencies (zod + locales, twenty-shared, etc.). Those
`define*` factories are pure build-time metadata used only by the
manifest extractor — the Lambda runtime only ever invokes
`default.config.handler`, so the factories are dead weight at runtime.

This PR shrinks the bundles to ~9.5 KB each (~99% reduction) without
changing runtime behaviour.

## What changes

- **Stub `twenty-sdk/define` at user-app build time.** New esbuild
plugin
(`packages/twenty-sdk/src/cli/utilities/build/common/plugins/stub-twenty-sdk-define.plugin.ts`)
intercepts every import of `twenty-sdk/define` during user-app builds
and replaces it with a tiny virtual module:
- Factory functions (`defineLogicFunction`,
`definePostInstallLogicFunction`, …) become `(config) => ({ success:
true, config, errors: [] })`.
  - Enums and helpers become `Proxy`-based no-ops.
- Wired into both the one-shot build (`build-application.ts`) and the
watcher (`esbuild-watcher.ts`), for logic functions and front
components.
- **New runtime barrel `twenty-sdk/logic-function`.** Re-exports only
the types logic-function authors need (`InstallPayload`, `RoutePayload`,
`CronPayload`, `DatabaseEventPayload`, `LogicFunctionConfig`,
`InputJsonSchema`, …). Compiled `.mjs` is 36 bytes. Wired into Vite,
Rollup `.d.ts` bundling, `package.json#exports`, and `typesVersions`.
- **Lint enforcement.** Added an oxlint `no-restricted-imports` rule
that forbids `twenty-shared` / `twenty-shared/*` imports from
`**/*.logic-function.ts` and `**/logic-functions/**/*.ts`, with a help
message pointing at the new barrel. Applied to the `create-twenty-app`
template and to `github-connector`, `hello-world`, `postcard`.
- **Migrated existing sources.** All logic-function files across
`community/{github-connector, apollo-enrich}`, `examples/{hello-world,
postcard}`, and `internal/{twenty-for-twenty, self-hosting, exa}` now
import types from `twenty-sdk/logic-function` instead of
`twenty-sdk/define` or `twenty-shared/*`. Renamed leftover
`InstallLogicFunctionPayload` references to `InstallPayload`.

## Why this is safe

- `define*` exports from `twenty-sdk/define` are metadata factories
whose call expressions are statically inspected by the manifest
extractor (`manifest-extract-config.ts`). They're never evaluated at
runtime — the Lambda executor only walks `default.config.handler`
(`logic-function-drivers/constants/executor/index.mjs`).
- The stub keeps the same call shape (`{ success, config, errors }`), so
any logic-function module that re-exports
`defineX(config).config.handler` still resolves to the user's handler at
runtime.
- Front-component bundles are unaffected by the stub because the
pre-existing JSX transform plugin
(`jsx-transform-to-remote-dom-worker-format-plugin.ts`) unwraps
`defineFrontComponent(...)` earlier in the pipeline. That's intentional
— front-component bloat is React/Preact, not in scope here.

## Measurements (github-connector)

| Asset | Before | After |
|---|---|---|
| `*.logic-function.mjs` | ~1.2 MB | ~9.5 KB |
| `*.logic-function.mjs.map` | ~3.1 MB | ~22 KB |
2026-04-24 17:51:35 +02:00
2025-08-07 17:02:12 +02:00

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