declare module 'redux-optimist-promise' {
  import { Middleware } from 'redux'
  export function resolve(actionName: string): string
  export function unresolve(actionName: string): string

  export function reject(actionName: string): string
  export function unreject(actionName: string): string

  export function isResolvedAction(actionName: string): boolean
  export function isRejectedAction(actionName: string): boolean
  export function isThenAction(actionName: string): boolean

  export default function(options?: {
    throwOnReject?: boolean
    resolvedName?: string
    rejectedName?: string
  }): Middleware
}