/**
 * Sets a value at a dot-separated path, creating missing objects along the way.
 * @example
 * const root: any = {};
 * setObjectPath(root, "a.b.c", 5);
 * // root.a.b.c === 5
 * @example
 * setObjectPath(root, ["x", "y"], true);
 * // root.x.y === true
 */
export declare function set(obj: any, pathValue: string | string[], value: unknown): void;
/**
 * Ensures a default value is set at the path and returns the stored value.
 * @example
 * const root: any = { a: { b: { c: [1] } } };
 * get(root, "a.b.c", []).unshift(0);
 * // root.a.b.c === [0, 1]
 */
export declare function get<T>(obj: any, pathValue: string | string[], defaultValue: T): T;