@har-tools/http-message

JavaScript API to create an HTTP message from Fetch API requests/responses.

Installation

npm install @har-tools/http-message

API

new HttpMessage(startLine, headers, body)

Creates a new HTTP message from the given start line, heades, and optional body.

HttpMessage.fromRequest(request)

• request: Request

Creates a new HTTP message from the given request instance.

const request = new Request('https://example.com', {
  method: 'POST',
  body: 'Hello world!',
})
const message = HttpMessage.from(request)

console.log(message)
// POST https://example.com HTTP/1.0
// content-type: text/plain;charset=UTF-8
//
// Hello world!

HttpMessage.fromResponse(response)

• response: Response | http.IncomingMessage

Creates a new HTTP message from the given response instane.

const response = new Response(
  JSON.stringify({
    id: 1,
    name: 'John',
  }),
  {
    status: 201,
    headers: {
      'Content-Type': 'application/json',
      'X-Custom-Header': 'Value',
    },
  }
)
const message = HttpMessage.from(response)

console.log(message)
// HTTP/1.0 201 Created
// content-type: application/json
// x-custom-header: Value
//
// {"id":1,"name":"John"}

Make sure to clone the response before passing it to the .fromResponse() method. This method reads the response body.