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OpenAPI Generator: TypeScript axios clients, CORS preflight with custom headers, and request interceptors
Axios merges headers per request—ensure interceptors add `Authorization` only after the browser completes preflight.
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openapiopenapi-generatorcors
Multi-file specs
Bundled specs may flatten $ref chains—verify CORS documentation for each operationId.
Versioning strategies (`/v1` vs headers) can shift which origins are allowed in API gateways.
Retries
axios-retry on 429 must respect Retry-After without breaking credentialed CORS flows.
Exponential backoff should not amplify preflight storms during outages.