Functional programming way of hexagonal architecture

Hexagonal architecture for survey application. There are Survey and Response

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Goals

• show examples with fp-ts
• keep it simple

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Functionalities

• user can create survey

• user can update survey

• user can get survey by form id

• user can create response for specific survey

• user can get all responses for specific survey

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API

sample-request.http can be used for test requests with VSCode REST Client extension.

Survey

GET: /surveys/{formId}
response: Survey

POST: /surveys response: Survey

PUT: /surveys/{formId}
response: Survey

Response

GET: /surveys/{formId}/responses
response: Response[]

POST: /responses
response: Response

type Survey = {
  id: string
  closeDate: string
  questions: {
      id: string
      type: "select" | "multiple-choice" | "open"
      options: string[]
  }[]
}

type Response = {
  formId: string
  email: string
  answers: {
      questionId: string
      value: string[]
  }[];
}

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How to run

• serverless-dynamodb-local is used, so Java Runtime Engine (JRE) version 6.x or newer is required (https://www.serverless.com/plugins/serverless-dynamodb-local)
• run yarn install
• run yarn dev