/** Where a configured key should be read from. */
export declare type FormsStorageSource = "reduxData" | "localStorage";
/**
 * Default when utilityFlags.isEliminateBrowserStorage is not set (undefined).
 * Legacy hosts keep localStorage; set the flag to true for reduxData-only reads.
 */
export declare const DEFAULT_FORMS_ELIMINATE_BROWSER_STORAGE = false;
export interface FormsStorageKeyConfig {
    /** Omit to use FormsStorageConfig.defaultSource (one source per client). */
    source?: FormsStorageSource;
    /** Storage key (defaults to the logical id passed to resolve). */
    key?: string;
    /** Try multiple keys in order (e.g. language). */
    keys?: string[];
    fallback?: string;
}
/**
 * Host supplies via userConfig.formsStorage, or derived from utilityFlags.
 * Per-key `source` is optional — falls back to defaultSource (same idea as toolkit
 * BROWSER_STORAGE: { type, key } with a single type for the client).
 * Example (eliminate mode — set via utilityFlags or defaultSource):
 * {
 *   "defaultSource": "reduxData",
 *   "session_id": { "key": "session_id" },
 *   "language": { "keys": ["lng", "lang", "selectedLang"], "fallback": "en" },
 *   "formKey": { "key": "formKey" }
 * }
 */
export interface FormsStorageConfig {
    defaultSource?: FormsStorageSource;
    session_id?: FormsStorageKeyConfig;
    language?: FormsStorageKeyConfig;
    formKey?: FormsStorageKeyConfig;
    [logicalKey: string]: FormsStorageKeyConfig | FormsStorageSource | undefined;
}
/** Legacy default: localStorage until host sets utilityFlags.isEliminateBrowserStorage. */
export declare const DEFAULT_FORMS_STORAGE_CONFIG: FormsStorageConfig;
/** Merge userConfig.formsStorage with defaults; map utilityFlags when present. */
export declare function resolveFormsStorageConfig(userConfig?: any): FormsStorageConfig;
/** Resolve a string value for a logical or explicit storage key. */
export declare function resolveFormsStorageString(logicalKey: string, reduxData?: Record<string, unknown>, config?: FormsStorageConfig): string | null;
/**
 * Resolve a structured value (form config blob, eNachForm, etc.).
 * Supports the same logical key / keys[] / key alias config as resolveFormsStorageString.
 */
export declare function resolveFormsStorageObject(logicalKey: string, reduxData?: Record<string, unknown>, config?: FormsStorageConfig): any;