export declare function isObject(value: any): boolean;
export declare function isPromise(value: any): any;
export declare function isPlainObject(value: any): boolean;
/**
 * 对数组从小到大排序
 */
export declare function sortBy<T>(arr: T[], func?: (item: T) => number): T[];
export declare function includes<T>(array: T[], item: T): boolean;
export declare function remove<T>(array: T[], item: T): void;
export declare function batchRemove<T>(array: T[], items: T[]): void;
export declare function batchRemoveFromSet<T>(set: Set<T>, items: T[]): void;
export declare function isPrimitive(value: any): boolean;
export declare function convert2UniqueString(key: string | symbol | number): string;
export declare const deduplicate: <T>(array: T[]) => T[];
/**
 * nextTick would flush promise micro task
 */
export declare function nextTick(fn?: () => void): Promise<void>;
export declare const hasOwn: (val: object, key: string | symbol | number) => key is never;
export declare function is(x: any, y: any): boolean;
export declare function bind(fn: any, ctx: any): (a?: any) => any;
export declare function shallowEqual(objA: any, objB: any, ignoreKeys?: string[]): boolean;
export declare const dummy: () => void;
export declare function loadJSON(url: string): Promise<any>;
export declare function updateQueryStringParameter(url: string, key: string, value: string): string;
export declare function getContextEnv(): "browser" | "vm";
export declare function getContextParam(key: string): any;