fix(orval): pass skipErrorChecking to TypeDoc to scope it to generated entry points (#3338) (#3345)

When `output.docs` is enabled, orval boots TypeDoc with the generated `.ts` files as entry
points. TypeDoc, however, still auto-discovers the consumer's tsconfig and builds a single
`ts.Program` from it — which means it runs full TypeScript diagnostics over the whole consumer
project, not just the files orval emitted.

The two observable consequences on master:

1. Diagnostics from files orval has nothing to do with (e.g. an unused `React` default import
   in a demo `App.tsx` under the React 17+ JSX transform) leak into orval's stdout — the
   symptom originally reported in #3338.
2. Because `app.convert()` returns `undefined` whenever those diagnostics exist, the catch
   path logs "TypeDoc not initialized" and the docs are silently dropped. The `docs` option
   has effectively been broken for any project with a single unrelated TS error.

Type-checking the consumer's project is not orval's responsibility — that lives in the
consumer's own build. Pass `skipErrorChecking: true` to the TypeDoc bootstrap so docs
generation only depends on the entry points orval actually produced. The option is placed
before `...config`, so users who explicitly want strict checking can re-enable it via
`docs: { skipErrorChecking: false }`.

After the fix, `samples/react-app` generates the previously-silently-dropped docs and emits
no unrelated diagnostics.

Author: zeriong

packages/orval/src/write-specs.ts

@@ -463,6 +463,12 @@ export async function writeSpecs(
       const app = await Application.bootstrapWithPlugins({
         entryPoints: paths.map((x) => upath.toUnix(x)),
         theme: 'markdown',
+        // Skip TypeScript diagnostics on the consuming project: TypeDoc would
+        // otherwise pick up the user's tsconfig and surface errors from files
+        // unrelated to the generated entry points (e.g. a demo `App.tsx`
+        // with an unused `React` default import under the new JSX transform —
+        // see #3338). User-overridable via the `docs` option below.
+        skipErrorChecking: true,
         // Set the custom config location if it has been provided.
         ...config,
         plugin: ['typedoc-plugin-markdown', ...(config.plugin ?? [])],