/**
 * bem helper
 * --不传参默认返回block--
 * b() => 'button'
 * --只第一个参数传string即为element--
 * b('text') => 'button__text'
 * --只第一个参数传对象或数组即为block+modifiers--
 * b({ disabled }) => 'button button--disabled'
 * b(['disabled', 'primary']) => 'button button--disabled button--primary'
 * --传两参数即为element+modifiers--
 * b('text', { disabled:false, loading:true }) => 'button__text button__text--loading'
 */
export type Incoming = string | {
    [key: string]: unknown;
};
export type Incomings = Incoming | Incoming[];
export type BEM = ReturnType<typeof createBEM>;
export type G_BEM = ReturnType<typeof createGlobalBem>;
export declare const createBEM: (block: string) => (el?: Incomings, mods?: Incomings) => string;
export declare const createGlobalBem: () => (el: string, mods?: Incomings) => string;