import { Obj } from "../type";
export declare function isFunction(val: any): boolean;
export declare function isPlainObject(o: any): boolean;
export declare function isString(o: any): boolean;
export declare function getValueByPath(source: Obj, path: string[], defaultValue: any): Obj;
export declare const isDef: (val: any) => boolean;
export declare const noop: (val: any) => any;
/**
 * debounce
 * @param {*} fn
 * @param {*} ms
 */
export declare function debounce(func: Function, wait: number, immediate: boolean): {
    (): any;
    cancel(): void;
};
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