type Options = {
    /**
     * A delimiter to split a BEM element. Defaults to `"__"`.
     */
    elementDelimiter: string;
    /**
     * A delimiter to split a BEM modifier. Defaults to `"--"`.
     */
    modifierDelimiter: string;
    /**
     * A namespace to prepend a BEM block. Defaults to `""`.
     */
    namespace: string | string[];
    /**
     * A delimiter to split a namespace. Defaults to `"-"`.
     */
    namespaceDelimiter: string;
    /**
     * A flag to force a BEM convention. Defaults to `true`.
     */
    strict: boolean;
};
type PartialOptions = Partial<Options>;
/**
 * Set up the default options.
 *
 * @param options - Options to control a generated class name.
 */
export declare function setup({ elementDelimiter, modifierDelimiter, namespace, namespaceDelimiter, strict, }: PartialOptions): void;
/**
 * BEM modifiers.
 */
type Modifiers = Record<string, boolean | null | undefined> | Array<string | null | undefined>;
/**
 * A function to generate a BEM class name.
 *
 * @param elementOrModifiers - A BEM element or modifiers.
 * @param modifiers - BEM modifiers.
 * @returns A generated class name.
 */
type BemBlockFunction = (elementOrModifiers?: string | Modifiers, modifiers?: Modifiers) => string;
/**
 * Creates a function to generate a BEM class name.
 *
 * @param block - A BEM block name.
 * @param options - Options to control a generated class name.
 * @returns A function to generate a BEM class name.
 */
export default function bem(block: string, options?: PartialOptions): BemBlockFunction;
export {};