/** Result of an own-property-only path lookup. */
export type PathValueLookup = {
    readonly found: true;
    readonly value: unknown;
} | {
    readonly found: false;
    readonly value: undefined;
};
/**
 * Looks up an own-property-only value from prevalidated path segments.
 *
 * @param sourceValues - Object that owns the values.
 * @param fieldPathSegments - Path segments previously returned by parseFieldPath.
 * @returns The path presence and its value, including an explicit undefined.
 */
export declare function lookupPathSegments(sourceValues: object, fieldPathSegments: readonly string[]): PathValueLookup;
/**
 * Looks up an own-property-only value while preserving presence information.
 *
 * @param sourceValues - Object that owns the form values.
 * @param fieldPath - Validated dot-separated field path.
 * @returns The path presence and its value, including an explicit undefined.
 */
export declare function lookupPathValue(sourceValues: object, fieldPath: string): PathValueLookup;
/**
 * Reads an own-property-only value from a validated object path.
 *
 * @param sourceValues - Object that owns the form values.
 * @param fieldPath - Validated dot-separated field path.
 * @returns The owned value, or undefined when the path is absent.
 */
export declare function getPathValue(sourceValues: object, fieldPath: string): unknown;