ReadableStream has already been used

[bossmodex]

What version of Elysia is running?

1.2.8

What platform is your computer?

Microsoft Windows NT 10.0.19045.0 x64

What steps can reproduce the bug?

Update elysia from 1.2.6 to 1.2.8

What is the expected behavior?

No response

What do you see instead?

error: ReadableStream has already been used
at mergeResponseWithSetHeaders (\api\node_modules\elysia\src\adapter\web-standard\handler.ts:238:14)
at mapResponse (\api\node_modules\elysia\src\adapter\web-standard\handler.ts:324:16)
at createNativeStaticHandler (\api\node_modules\elysia\src\adapter\bun\handler.ts:18:19)
at add (\api\node_modules\elysia\src\index.ts:733:15)
at get (\api\node_modules\elysia\src\index.ts:3997:8)
at \api\node_modules@elysiajs\apollo\dist\index.mjs:33:11

Additional information

with update elysia 1.2.8 have this error

when rolling back to 1.2.6 everything works

[andresmahor]

The issue is that app.get expects a handler function, not a Response directly.

if (landingPage)
  app.get(path, () => {
    return new Response(landingPage as string, {
      headers: {
        'Content-Type': 'text/html',
      },
    })
  })

This should fix the issue.
Wait for them to update it.

[Fifixex]

Hello, I have encountered the same issue and wanted to share more details. Here is a screenshot showing the error in my environment: