Maximum call stack size exceeded when using `asClass: true`

[hekystyle]

Description

Maximum call stack size exceeded when using asClass: true

Reproducible example or configuration

import { defineConfig } from '@hey-api/openapi-ts';

export default defineConfig({
  input: 'http://localhost:5038/swagger/1.0/swagger.json',
  output: 'src/_generated',
  plugins: [{ name: '@hey-api/typescript' }, { name: '@hey-api/sdk', asClass: true }],
});

OpenAPI specification (optional)

https://gist.github.com/hekystyle/86c87cb8255fe85dab9c4844283477d3

System information (optional)

OS: Windows 11
bun: 1.2.22
NodeJS: 24.10.0

[dosubot]

Hi @hekystyle! I'm Dosu and I’m helping the openapi-ts team.

There are no known issues or documentation warnings about "Maximum call stack size exceeded" errors when using asClass: true with the @hey-api/sdk plugin—this option is documented as a supported way to generate class-based SDKs, especially for Angular usage, and is widely used in example configs without mention of stack overflow problems [source].

This kind of error usually points to infinite recursion or a circular reference, which could be triggered by something in your OpenAPI spec. While the docs don't mention recursion issues, you might want to check your spec for recursive schemas or circular references. You can also try toggling the classStructure option (e.g., set classStructure: 'off' in your plugin config) or use services.asClass: true to see if the error persists [source].

If the problem continues, try simplifying your OpenAPI spec to isolate the problematic schema or endpoint. This can help pinpoint if a specific part of the spec is causing the recursion during code generation.

To reply, just mention @dosu.

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