export declare const htmlAttrNameReg: RegExp;
export declare const userAttrNameReg: RegExp;
export declare function _call<T>(fn: (v: T) => unknown, v: T): T;
export declare function stringifyClassObject(name: string, value: unknown): string;
export declare function stringifyStyleObject(name: string, value: unknown): string;
export declare const toDelimitedString: (val: unknown, delimiter: string, stringify: (n: string, v: unknown) => string | undefined) => string;
export declare function isEventHandler(name: string): name is `on${string}`;
export declare function getEventHandlerName(name: `on${string}`): string;
export declare function isVoid(value: unknown): value is false | null | undefined;
export declare function isNotVoid(value: unknown): boolean;
export declare function normalizeDynamicRenderer<Renderer>(value: any): Renderer | string | undefined;
export declare const decodeAccessor: (num: number) => string;