Type Alias OperationAt<Map_, P, M>

OperationAt: Map_ extends Record<string, unknown>
    ? P extends keyof Map_
        ? Map_[P] extends Record<string, unknown>
            ? M extends keyof Map_[P] ? Map_[P][M] : never
            : never
        : never
    : never

Generic "operation under a given map" extractor used by every downstream xxKeysOf helper. Returns the Operation Object for the given path-or-webhook name and method, or never when no such entry exists.