/**
 * HTTP-layer constants shared by the core `createApi` factory.
 */
/** Canonical request/response header names used across the SDK. */
export declare const HTTP_HEADER: {
    readonly AUTHORIZATION: "Authorization";
    readonly DEVICE_ID: "DeviceID";
    readonly DEVICE_IP: "DeviceIP";
    readonly CLIENT_ID: "X-Client-Id";
    readonly USER_AGENT: "user-agent";
    readonly REQUEST_ID: "x-request-id";
    /**
     * Backend response-casing selector. Default backend casing is camelCase
     * (omit the header); send `snake` to receive snake_case bodies.
     */
    readonly RESPONSE_CASING: "x-response-casing";
    /**
     * Backend request-casing selector. Default is camelCase (omit the header);
     * send `snake` to declare a snake_case request body.
     */
    readonly REQUEST_CASING: "x-request-casing";
};
/** Supported response-casing values. camelCase is the backend default. */
export declare const RESPONSE_CASING_VALUE: {
    readonly CAMEL: "camel";
    readonly SNAKE: "snake";
};
export type ResponseCasing = (typeof RESPONSE_CASING_VALUE)[keyof typeof RESPONSE_CASING_VALUE];
export type RequestCasing = ResponseCasing;
/**
 * Serialization format discriminator. Accepted by content / rules /
 * lenses list endpoints via `?format=json|yaml`.
 */
export declare const SERIALIZATION_FORMAT: {
    readonly JSON: "json";
    readonly YAML: "yaml";
};
export type SerializationFormat = (typeof SERIALIZATION_FORMAT)[keyof typeof SERIALIZATION_FORMAT];
/** Default per-request tuning (overridable via `createCmsSDK` options). */
export declare const HTTP_DEFAULTS: {
    readonly TIMEOUT_MS: 30000;
    readonly RETRY: 0;
};
/** Status codes eligible for automatic retry (transient failures). */
export declare const HTTP_RETRY_STATUS_CODES: readonly [408, 425, 429, 500, 502, 503, 504];
//# sourceMappingURL=http.constant.d.ts.map