Argument of type '"/example/post-endpoint"' is not assignable to parameter of type 'PathsWithMethod<paths, "post">'

[ViktorPontinen]

Description

A brief description of the bug. Provide either a screenshot or the full error message
When we use the --path-params-as-types flag with openapi-typescript to generate types, some post requests(seems to only affect post requests) stop being autocompleted/discovered and shows error:
Argument of type '"/example/post-endpoint"' is not assignable to parameter of type 'PathsWithMethod<paths, "post">'.

Example(ignore the untyped body):

export const createSomeEntity = async (body) => {
  return client.POST('/example/post-endpoint', {
    body,
  })
}

Without the --path-params-as-types flag, everything works as expected. Only difference I see in generated types is the adjustments to dynamic paths keys: [path: `/example/dynamic/${string}`]:.

Anyone else got same issue or just us?

Reproduction

How can this be reproduced / when did the error occur? Does the issue occur in a specific browser, or all browsers?
Not sure if reproducible in other repos, I guess try to regenerate your types with the --path-params-as-types flag. Will try to test outside our repo to test.

Expected result
I think description covers it's all.
(in case it’s not obvious)

Checklist

• I’m willing to open a PR (see CONTRIBUTING.md)

[kerwanp]

Hi @ViktorPontinen!

Could you provide an OpenAPI schema that result in the same behavior so we can reproduce your issue?

[ViktorPontinen]

Hi @kerwanp , I was finally able to reproduce it in a smaller scope, our real openapi yaml has almost 97k lines and is auto-generated.
While doing so, I also think I figured out why it's happening. Unclear tho if this is because we structure our endpoints incorrectly or if it's just an edge-case that is not covered by openapi-fetch/openapi-typescript.

The paths "/api/sessions/create" and [path: `/api/sessions/${string}`] most likely collide because /create can also match the /${string} path.

Here is repo for reproduction, see /src/services/index.ts: https://github.com/ViktorPontinen/open-api-bug

EDIT: I now see the error is different, give me a minute to push updated.
EDIT TWO: Nvm, will take a while to figure it out. It's something else. Will post when ready.