Charles Bochet
b456f79167
## Reduce type leakage between GraphQL schemas ### Why Twenty runs two separate GraphQL schemas: **core** and **metadata**. NestJS's `@nestjs/graphql` uses a global `TypeMetadataStorage` that accumulates all decorated types across all modules. When each schema is built, every registered type leaks into both schemas regardless of which module it belongs to. This means the core schema's generated TypeScript (`generated/graphql.ts`) contained ~2,700 lines of types that only belong to the metadata schema (and vice versa). This creates confusion about type ownership, inflates generated code, and makes it harder to reason about which API surface each schema actually exposes. ### How **1. Patch `@nestjs/graphql` to support schema-scoped type resolution** - **(Already done)** Added a `resolverSchemaScope` option to `GqlModuleOptions`, allowing each schema to declare a scope (e.g. `'metadata'`) - `ResolversExplorerService` now filters resolvers by a `RESOLVER_SCHEMA_SCOPE` metadata key, so each schema only sees its own resolvers - `GraphQLSchemaFactory` now performs a **reachability walk** (`computeReachableTypes`) starting from scoped resolver return types and arguments, only including types that are transitively referenced — handling unions, interfaces, and prototype chains - Type definition storage and orphaned reference registry are cleared between schema builds to prevent cross-contamination **2. Register `ClientConfig` as orphaned type in metadata schema** Since `ClientConfig` is needed in the metadata schema but not directly returned by a resolver, it's explicitly declared via `buildSchemaOptions.orphanedTypes`. **3. Regenerate frontend types and fix imports** - `generated/graphql.ts` shrank by ~2,700 lines (types moved to where they belong) - `generated-metadata/graphql.ts` gained types like `ClientConfig` that were previously missing - ~500 frontend files updated to import from the correct generated file
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Does the world need another CRM?
We built Twenty for three reasons:
CRMs are too expensive, and users are trapped. Companies use locked-in customer data to hike prices. It shouldn't be that way.
A fresh start is required to build a better experience. We can learn from past mistakes and craft a cohesive experience inspired by new UX patterns from tools like Notion, Airtable or Linear.
We believe in Open-source and community. Hundreds of developers are already building Twenty together. Once we have plugin capabilities, a whole ecosystem will grow around it.
What You Can Do With Twenty
Please feel free to flag any specific needs you have by creating an issue.
Below are a few features we have implemented to date:
- Personalize layouts with filters, sort, group by, kanban and table views
- Customize your objects and fields
- Create and manage permissions with custom roles
- Automate workflow with triggers and actions
- Emails, calendar events, files, and more
Personalize layouts with filters, sort, group by, kanban and table views
Customize your objects and fields
Create and manage permissions with custom roles
Automate workflow with triggers and actions
Emails, calendar events, files, and more
Stack
- TypeScript
- Nx
- NestJS, with BullMQ, PostgreSQL, Redis
- React, with Recoil, Emotion and Lingui
Thanks
Thanks to these amazing services that we use and recommend for UI testing (Chromatic), code review (Greptile), catching bugs (Sentry) and translating (Crowdin).
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