declare module 'rlp' {
    import { Buffer } from 'safe-buffer'

    type EncodeScalarInput = Buffer|string|number
    type EncodeInput = EncodeScalarInput|Array<EncodeScalarInput>

    export function encode(input: EncodeInput): Buffer
    export function decode(input: EncodeInput): Array<Buffer>
    export function getLength(input: EncodeInput): number
}