@spree/storefront-api-v2-sdk/src/interfaces/Result.ts

Node module to easily integrate your JavaScript or TypeScript application with Spree API V2. You can create an entirely custom Storefront in JS/TS with this package including one page checkout, Single Page Apps, PWAs and so on

export interface Result<F extends Error, S> {
  isSuccess(): boolean
  isFail(): boolean
  success(): S
  fail(): F
}