import { ConfigOptions, WidgetConfig } from "../types";
declare type KeysOf<T> = keyof T;
declare type SimpleObject = {
    [key: string]: unknown;
};
export declare function hasProps<T extends SimpleObject & {}>(object: unknown, props: KeysOf<T> | KeysOf<T>[]): object is T;
export declare function isObject(x: unknown): x is {};
export declare function assertProp<T extends SimpleObject & {}>(object: unknown, ...props: KeysOf<T>[]): object is T;
declare type Required<T> = T extends object ? {
    [P in keyof T]-?: NonNullable<T[P]>;
} : T;
export declare function validateConfig(raw: unknown): Required<ConfigOptions>;
export declare function validateLocale(locale?: string): string | undefined;
export declare function validateWidgetConfig(raw: unknown): WidgetConfig;
export declare function validatePasswordlessConfig(raw: unknown): WidgetConfig;
export {};