/**
 * Pure masking strategy helpers for the `masked` property modifier.
 *
 * Semantics: docs/spec/semantics.md, "Property Masking".
 * - `null`/`undefined` pass through unmasked (nothing to leak).
 * - All other values are converted with String(value); masked output is a string.
 * - Transforms are deterministic: identical strategy + identical value ⇒ identical output.
 */
import type { IRMaskStrategy } from './ir';
export declare function applyMaskStrategy(strategy: IRMaskStrategy, value: unknown): unknown;
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