import { type JSX } from 'woby';
export declare const extend: {
    <T extends {}, U>(target: T, source: U): T & U;
    <T extends {}, U, V>(target: T, source1: U, source2: V): T & U & V;
    <T extends {}, U, V, W>(target: T, source1: U, source2: V, source3: W): T & U & V & W;
    (target: object, ...sources: any[]): any;
};
export declare const prefixed: (prop: string) => string;
export declare const getStyle: (el: JSX.Element, prop: string) => string;
export declare const isArray: (obj: Function) => boolean;
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