Call api wrapper

apiCall.js

// @flow
export class ApiCall {
  constructor(url: string) {
    this.url = url;
  }

  get = (id?: string) => app.api.get(id ? `${this.url}/${id}` : this.url);
  post = (body: object = {}) => app.api.post(body);
  put =  (body: object = {}) => app.api.put(body);
  delete =  (id?: string) => app.api.delete(`${this.url}/${id}`);
}