declare module '@decentraland/EthereumController' {
  export type RPCSendableMessage = {
    jsonrpc: '2.0'
    id: number
    method: string
    params: any[]
  }

  export interface MessageDict {
    [key: string]: string
  }

  /**
   * Requires a generic payment in ETH or ERC20.
   * @param  {string} [toAddress] - NFT asset id.
   * @param  {number} [amount] - Exact amount of the order.
   * @param  {string} [currency] - ETH or ERC20 supported token symbol
   */
  export function requirePayment(toAddress: string, amount: number, currency: string): Promise<any>

  /**
   * Takes a dictionary, converts it to string with correct format and signs it.
   * @param  {messageToSign} [MessageDict] - Message in an object format.
   * @return {object} - Promise of message and signature in an object.
   */
  export function signMessage(
    message: MessageDict
  ): Promise<{ message: string; hexEncodedMessage: string; signature: string }>

  /**
   * Takes a message string, parses it and converts to object.
   * @param  {message} [string] - Message in a string format.
   * @return {object} - Promise of message as a MessageDict.
   * @internal
   */
  export function convertMessageToObject(message: string): Promise<MessageDict>

  /**
   * Used to build a Ethereum provider
   */
  export function sendAsync(message: RPCSendableMessage): Promise<any>

  /**
   * Returns the user's public key (address)
   */
  export function getUserAccount(): Promise<string>
}