Developer tooling
RBAC Form Generator
TypeScript CLI that generates NestJS GraphQL + Mongoose form modules with RBAC decorator stubs from JSON schemas.
The challenge
Teams repeatedly hand-coded CRUD form backends with inconsistent RBAC wiring across NestJS modules. Without a coherent developer tooling foundation, RBAC Form Generator stakeholders faced fragmented tools, slow handoffs, and limited visibility—classic failure modes Tekvers designs against.
The solution
RBAC Form Generator: TypeScript CLI that generates NestJS GraphQL + Mongoose form modules with RBAC decorator stubs from JSON schemas. Faster NestJS form API scaffolding from JSON definitions. Tekvers delivered a maintainable developer tooling system for RBAC Form Generator using NestJS, TypeScript, GraphQL, Mongoose, with phased rollout, operator workflows, and documentation suited to long-term ownership.
Approach
Generation pipeline
`FormGenerator` orchestrates six file generators plus `ValidationMapper`; CLI flags for schema/output/swagger/validation/timestamps/soft-delete.
RBAC stubs by contract
`@UseGuards(JwtAuthGuard, RolesGuard)` + `@Roles(...)` per operation—host must supply auth module.
Disclose quirks
Portfolio and docs call out quoting/filename/soft-delete defaults so squads review generated TypeScript before shipping.
Deliverables
- ▸npm bin `nestjs-form-generator` → `dist/cli.js`
- ▸Programmatic `FormGenerator` API + multi-schema helper
- ▸Field types: text, textarea, number, email, date/datetime, boolean, dropdown, file, phone, url, password
- ▸Example schemas and `test-generator.ts` smoke script
- ▸Optional Swagger/`@ApiProperty` emission when enabled
- ▸Documented limitations vs README marketing polish
Outcomes
- ▸Faster NestJS form API scaffolding from JSON definitions
- ▸Consistent validation mapping across generated modules
- ▸Clear integration expectation with existing auth
Impact
Backend squads prototype form APIs faster—while Tekvers frames the tool as a generator with known quirks, not production codegen you trust blindly.
Tech stack
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