Optional headersRequest headers
Optional signalAbortSignal for request cancellation
Optional credentialsCredentials mode
Optional modeRequest mode (cors, no-cors, same-origin)
Optional paramsQuery parameters — appended to the URL
Optional cacheCache mode
Optional redirectRedirect mode
Optional timeoutPer-request timeout in milliseconds
Optional responseHow to parse the response body (default: 'json')
Request options for convenience methods (.get, .post, etc.)
Superset of commonly-used RequestInit properties plus fej enhancements.
Example