jquery-spies.js

const sinon = require('sinon');
const fakeDOM = require('jsdom').jsdom();

let nodeJquery = null;
let jquerySpies = null;

export function getJquery() {
   if (!nodeJquery) {
      nodeJquery = require('jquery')(fakeDOM.defaultView);
    }

    return nodeJquery;
}

export function getJquerySpies() {
  if (!jquerySpies) {
    jquerySpies = {};

    Object.keys(nodeJquery.prototype).forEach(method => {
      if (typeof nodeJquery.prototype[method] === 'function') {
        jquerySpies[method] = sinon.spy(nodeJquery.prototype, method);
      }
    });
  }

  return jquerySpies;
}