fleet/frontend/kolide/request.js

import fetch from 'isomorphic-fetch';
import { isUndefined, omitBy } from 'lodash';

export default class Request {
  constructor (options) {
    this.body = options.body;
    this.credentials = 'same-origin';
    this.endpoint = options.endpoint;
    this.headers = {
      Accept: 'application/json',
      'Content-Type': 'application/json',
      ...options.headers,
    };
    this.method = options.method;
  }

  static REQUEST_METHODS = {
    DELETE: 'DELETE',
    GET: 'GET',
    PATCH: 'PATCH',
    POST: 'POST',
  };

  static handleResponse (response, jsonResponse) {
    if (response.ok) {
      return jsonResponse;
    }

    const error = new Error(response.statusText);
    error.error = jsonResponse.error;
    error.message = jsonResponse;
    error.response = jsonResponse;
    error.status = response.status;

    throw error;
  }

  get requestAttributes () {
    const { body, credentials, headers, method } = this;

    return omitBy({ body, credentials, headers, method }, isUndefined);
  }

  send () {
    const { endpoint, requestAttributes } = this;

    return fetch(endpoint, requestAttributes)
      .then((response) => {
        return response.json()
          .then((jsonResponse) => {
            return Request.handleResponse(response, jsonResponse);
          });
      });
  }
}