import { MaskOptions } from '../../utils';
export type MaskingCallback = (value: string, options: MaskOptions) => string;
export type MaskingCallbackAsync = (value: string, options: MaskOptions) => Promise<string> | string;
export declare function applyAllowStrategy(target: any, schema: Record<string, MaskOptions>, defaultMask: MaskOptions, maskFn: MaskingCallback): void;
/**
 * Applies allowlist-based masking asynchronously.
 */
export declare function applyAllowStrategyAsync(target: any, schema: Record<string, MaskOptions>, defaultMask: MaskOptions, maskFn: MaskingCallbackAsync): Promise<void>;
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