declare module 'multicodec' {
  export function addPrefix(multicodecStrOrCode: (string | number), data: Buffer): Buffer
  export function rmPrefix(data: Buffer): Buffer
  export function getCodec(prefixedData: Buffer): string
  export function getName(codec: number): string
  export function getNumber(name: string): number
  export function getCode(prefixedData: Buffer): number
  export function getCodeVarint(codecName: string): Buffer
  export function getVarint(code: number): Array<number>
}