import type { TCoreChecksumConfig } from "./types/checksum.js";
export declare const DEFAULT_CHECKSUM_CONFIG: Readonly<TCoreChecksumConfig>;
/**
 * Ensures all fields of a `TCoreChecksumConfig` are `Set<string>` instances.
 * After a JSON round-trip, Sets become arrays (custom replacer) or empty
 * objects (native `JSON.stringify`); this converts both forms back to Sets.
 * Returns `undefined` if the input is `undefined`. Leaves undefined fields as-is.
 */
export declare function normalizeChecksumConfig(config: TCoreChecksumConfig | undefined): TCoreChecksumConfig | undefined;
/**
 * Converts all `Set<string>` fields in a `TCoreChecksumConfig` to `string[]`
 * so the config survives a plain `JSON.stringify` round-trip (which turns Sets
 * into `{}`). Returns `undefined` when the input is `undefined`.
 */
export declare function serializeChecksumConfig(config: TCoreChecksumConfig | undefined): Record<string, string[]> | undefined;
/**
 * Creates a checksum config by merging additional fields into the defaults.
 * Omitted fields in `additional` inherit defaults. Fields are unioned, not replaced.
 */
export declare function createChecksumConfig(additional: TCoreChecksumConfig): TCoreChecksumConfig;
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