export declare const hasOwn: (target: object, key: PropertyKey) => boolean;
/**
 * Returns the first key of a property path (e.g. "database" for
 * "database.host"), or the path itself if "object" has it as a key.
 */
export declare function getRootKey(object: unknown, path: PropertyKey): PropertyKey;
/**
 * Resolves a property path (e.g. "database.host") against "object".
 * Members inherited from built-in prototypes resolve to `undefined`.
 */
export declare function getProperty(object: unknown, path: PropertyKey): unknown;
/**
 * Resolves a property path (e.g. "database.host") against "object". "found"
 * tells a path whose value is `undefined` from one that doesn't exist.
 */
export declare function resolveProperty(object: unknown, path: PropertyKey): {
    found: boolean;
    value: unknown;
};
/**
 * Sets the value at a property path (e.g. "database.host") of "object",
 * creating the missing objects on the way. Only own properties are descended
 * into, so the write can't land on a built-in shared by the whole process.
 * Paths through "__proto__", "constructor" or "prototype" are ignored.
 */
export declare function setProperty(object: Record<PropertyKey, any>, path: PropertyKey, value: unknown): void;