openapi-metadata NoExplicitTypeError

[boompikachu]

It seems that following the documentation for openapi-metadata, when generating the document, there's an error

NoExplicitTypeError: Unable to infer OpenAPI type from TypeScript reflection system. You need to provide explicit type for 'name' of 'User' class

This error can be solved by adding type in the @ApiProperty() for example: @ApiProperty({ type: "number" })

Is this a bug or we have to explicitly write down the type every time

//tsconfig { "compilerOptions": { "emitDecoratorMetadata": true, "experimentalDecorators": true, "moduleResolution": "bundler", "module": "es2022", "target": "es2017" } } // package.json "dependencies": { "openapi-metadata": "^0.2.0", "reflect-metadata": "^0.2.2" }, "devDependencies": { "tsx": "^4.19.2", "typescript": "^5.7.3" // tried with 4.9 too } 

import { ApiOperation, ApiResponse, ApiProperty, } from "openapi-metadata/decorators"; import { generateDocument } from "openapi-metadata"; import "reflect-metadata"; class User { @ApiProperty({ /*type: "number"*/ }) declare id: number; } class UsersController { @ApiOperation({ methods: ["get"], path: "/users", summary: "List users", }) @ApiResponse({ type: [User] }) async "/users"() {} } const document = await generateDocument({ controllers: [UsersController], document: { info: { title: "My Api", version: "1.0.0", }, }, }); 

pnpm tsx ./src/index.ts

I wanted to put in issue but there is no openapi-metadata template and there's also no blank template