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Moleculer service definitions with automatic type extraction","maintainers":[{"name":"eilichev","email":"eilichev@list.ru"}],"readme":"# moleculer-service-types\n\nType-safe Moleculer service definitions with automatic type extraction. Single Source of Truth for service types - define once, use everywhere!\n\n## Installation\n\n```bash\nnpm install @eilichev/moleculer-service-types\n```\n\n## Usage\n\n### 1. Define Services\n\n```typescript\nimport { createService, Context } from '@eilichev/moleculer-service-types';\n\n// Define your types\ninterface UserId { user_id: string; }\ninterface UserType { id: string; email: string; name: string; }\ninterface ServiceResponse { response: T | null; error: string | null; }\n\n// Create a service with type-safe actions\nexport const UserService = createService('users', {\n getById: async (ctx: Context): Promise> => {\n // Your implementation\n return { response: null, error: null };\n },\n\n // With validator\n create: {\n validator: { email: 'email', name: 'string' },\n handler: async (ctx: Context<{ email: string; name: string }>): Promise> => {\n return { response: null, error: null };\n },\n },\n});\n```\n\n### 2. Create Service Registry\n\n```typescript\nimport { InferMethods } from '@eilichev/moleculer-service-types';\nimport { UserService } from './user.service';\nimport { ProductService } from './product.service';\n\nexport const services = {\n users: UserService,\n product: ProductService,\n} as const;\n\n// ServiceTypes is automatically generated!\nexport type ServiceTypes = {\n [K in keyof typeof services]: InferMethods<(typeof services)[K]>;\n};\n\nexport function getAllServiceSchemas() {\n return Object.values(services).map((s) => s.schema);\n}\n```\n\n### 3. Use BrokerWrapper\n\n```typescript\nimport { BrokerWrapper } from '@eilichev/moleculer-service-types';\nimport { ServiceTypes, getAllServiceSchemas } from './services';\n\nconst broker = new BrokerWrapper({\n nodeID: 'my-service',\n transporter: 'NATS',\n});\n\n// Register all services\nfor (const schema of getAllServiceSchemas()) {\n broker.createService(schema);\n}\n\nawait broker.start();\n\n// Type-safe calls!\nconst result = await broker.service.users.getById({ user_id: '123' });\n// ^-- autocomplete works here!\n\nif (result.response) {\n console.log(result.response.email); // typed!\n}\n```\n\n## API\n\n### `createService(name, actions, settings?)`\n\nCreates a type-safe service definition.\n\n- `name`: Service name (string)\n- `actions`: Object with action handlers\n- `settings`: Optional Moleculer service settings\n\nReturns an object with:\n- `name`: Service name\n- `actions`: Typed actions\n- `schema`: Moleculer ServiceSchema for `broker.createService()`\n\n### `InferMethods`\n\nType utility that extracts method signatures from a service.\n\n```typescript\ntype Methods = InferMethods;\n// { getById: (params: UserId) => Promise>; ... }\n```\n\n### `BrokerWrapper`\n\nExtended Moleculer ServiceBroker with type-safe `service` proxy.\n\n```typescript\nconst broker = new BrokerWrapper(options);\nbroker.service.users.getById({ user_id: '123' }); // fully typed!\n```\n\n### `Context`\n\nRe-exported from Moleculer for convenience.\n\n## Benefits\n\n- **Single Source of Truth**: Define types once in service handlers\n- **Auto-generated Types**: `ServiceTypes` is derived from actual code\n- **Full IDE Support**: Autocomplete, hover types, go-to-definition\n- **No Manual Sync**: No separate type files to maintain\n- **Type-safe Calls**: Compile-time errors for wrong parameters\n\n## License\n\nMIT\n","readmeFilename":"README.md","homepage":"https://github.com/eilichev/moleculer-service-types#readme","bugs":{"url":"https://github.com/eilichev/moleculer-service-types/issues"}}