fix: add type-gen support for alphanumeric paths

[Prithpal-Sooriya]

Issue

Fixes: #298

Elysia’s fromTypes() type generation fails when a route path contains alphanumeric segments (e.g. /v1, /v2/foo).

For example this snippet.

import { Elysia } from 'elysia'
import openapi, { fromTypes } from '@elysiajs/openapi'

export const app = new Elysia()
  .use(openapi({
    references: fromTypes('<path-to-this-file>.ts'),
  }))
  .get('/v', () => 5 as const)    // ✅ works
  .get('/1', () => 5 as const)    // ✅ works
  .get('/v1', () => 5 as const)   // ❌ fails
  .get('/v1/foo', () => 5 as const) // ❌ fails

console.log(JSON.stringify(fromTypes('<path-to-this-file>.ts')(), null, 2))

Root Cause

During type generation, the declaration string is parsed and numeric keys are quoted using this regex:

const numberKey = /(\d+):/g

This works for numeric property keys:

- 1: { ... }
+ "1": { ... } ✅ 

But breaks for alphanumeric property keys:

- v1: { ... }
+ v"1": { ... } ❌

Fix

Replace the numeric-only key matcher with a more general regex that safely quotes all unquoted valid property keys.

This results in

- v1: { ... }
+ "v1": { ... } ✅
- 2: { ... }
+ "2": { ... } ✅
- foo: { ... }
+ "foo": { ... } ✅

[coderabbitai]

Important

Review skipped

Review was skipped due to path filters

⛔ Files ignored due to path filters (2)

• src/gen/index.ts is excluded by !**/gen/**
• test/gen/index.test.ts is excluded by !**/gen/**

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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