bug: eden treaty - request `body` params has `any` type - eden fetch has correct types

[tresorama]

What version of Elysia is running?

├── @elysiajs/eden@1.4.6
├── @elysiajs/node@1.4.3
├── @types/node@22.19.3
├── elysia@1.4.21
├── tsx@4.21.0
└── typescript@5.9.3

What platform is your computer?

Linux VM

What environment are you using

node v22.20.0

Are you using dynamic mode?

no

What steps can reproduce the bug?

See sandbox

• Create a route that requires a request body
• create an eden treaty client
• call the route with the client and note that body params has any as type
• create an eden fetch client
• do same -> note that eden fetch client has correct type

Visual

// backend api
new Elysia
.post(
    "/create-post",
    async (ctx) => {
      return {
        message: "Post Created",
        data: ctx.body,
      };
    },
    {
      body: t.Object({
        name: t.String(),
        content: t.String(),
        safeAge: t.Number(),
      }),
    },

// client 

const clientTreaty = ...
const clientFetch = ...

// eden treaty is bugged
await clientTreaty.['create-post'].post({
  // here property names are correct, but every props types is any
})

// eden fetch is correct
await clientFetch('/create-post', {
  method: 'POST',
  body: {
    // here property names and types are correct
  }
);

What is the expected behavior?

correct types

What do you see instead?

any type for each body param

Additional information

See sandbox

Have you try removing the node_modules and bun.lockb and try again yet?

yes