export declare function isEventProp(propName: string): boolean;
export declare function isNullOrUndefined(o: any): o is null | undefined;
export declare const toString: () => string;
export declare const isArray: (arg: any) => arg is any[];
export declare function isInvalid(o: any): o is null | boolean | undefined;
export declare function isStringOrNumber(o: any): o is string | number;
export declare function isNull(o: any): o is null;
export declare function isUndefined(o: any): o is undefined;
export declare function isFunction(o: any): o is Function;
export declare function isNumber(o: any): o is number;
export declare function isString(o: any): o is string;
export declare function isObject(o: any): o is object;
export declare const ERROR_MSG = "a runtime error occured! Use Intact in development environment to find the error.";
export declare function throwError(message?: string): never;
export declare function error(message: string): void;
export declare const hasOwn: (v: PropertyKey) => boolean;
export declare const EMPTY_OBJ: any;
export declare const noop: () => void;
export declare const hasDocumentAvailable: boolean;