export function sha256_constructor(options: any): void;
export class sha256_constructor {
    constructor(options: any);
    heap: any;
    asm: any;
    BLOCK_SIZE: number;
    HASH_SIZE: number;
}
export namespace sha256_constructor {
    export { _sha256_block_size as BLOCK_SIZE };
    export { _sha256_hash_size as HASH_SIZE };
    export const NAME: string;
}
export function get_sha256_instance(): any;
export var _sha256_block_size: number;
export var _sha256_hash_size: number;