https://github.com/D-Pow/MockRequests/issues/15?utm_source=pocket_mylist#issuecomment-888685996 ``` global.fetch = require('node-fetch'); global.Headers = fetch.Headers; global.XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest; MR = require('mock-requests'); global.axios = require('axios'); MR.setMockUrlResponse('http://localhost:1111/t', { mockExample: 1 }); axios.get('http://localhost:1111/t').then(resp => console.log(resp)); // Error "Cannot read property 'headers' of undefined" // at exports.XMLHttpRequest.getAllResponseHeaders at node_modules/xmlhttprequest/lib/XMLHttpRequest.js:239` ```