BUG: Number types in `t.Number()` are incorrectly inferred as `string | number` in generated OpenAPI schema

[alimehasin]

Description

When defining a schema using t.Number(), the generated OpenAPI specification includes the field type as string | number.
However, the expected behavior is for the field to be strictly number.

---

Steps to Reproduce

import { Elysia, t } from 'elysia';
import { openapi } from '@elysiajs/openapi';

new Elysia()
  .use(openapi())
  .get('/example', () => ({ discountValue: 1 }), {
    schema: {
      response: t.Object({
        discountValue: t.Number(),
      }),
    },
  })
  .listen(3000);

Then check the generated OpenAPI JSON.
The resulting schema shows:

"discountValue": {
  "anyOf": [
    { "format": "integer", "default": 0, "type": "string" },
    { "type": "integer" }
  ]
},

Expected Behavior

@elysiajs/openapi should generate type: "number" for fields defined with t.Number().

Environment

• Elysia version: 1.4.11
• @elysiajs/openapi version: ^1.4.11

Additional Context

This issue affects schema validation and client generation tools that rely on strict OpenAPI types (e.g., TypeScript clients from openapi-typescript).

[Cauatn]

i'm experience the same issue

[DaxServer]

Using Elysia 1.4.13 and Elysia OpenAPI 1.4.11, here is the snippet:

import { Elysia, t } from 'elysia';
import { openapi } from '@elysiajs/openapi';

new Elysia()
  .use(openapi())
  .get('/example', () => ({ discountValue: 1 }), {
    response: t.Object({
      discountValue: t.Number(),
    }),
  })
  .listen(3000)

...will generate OpenAPI JSON:

{
  "openapi": "3.0.3",
  "info": {
    "title": "Elysia Documentation",
    "description": "Development documentation",
    "version": "0.0.0"
  },
  "paths": {
    "/example": {
      "get": {
        "responses": {
          "200": {
            "description": "Response for status 200",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "discountValue": {
                      "type": "number"
                    }
                  },
                  "required": [
                    "discountValue"
                  ]
                }
              }
            }
          }
        },
        "operationId": "getExample"
      }
    }
  },
  "components": {
    "schemas": {}
  }
}