intercept.js

/**
 * in order to run this file make sure you have `webdriverio`
 * installed using NPM before running it:
 *
 *   $ npm install webdriverio
 *
 */
import { remote } from 'webdriverio'

const browser = await remote({
    capabilities: {
        browserName: 'chrome'
    }
})

await browser.url('https://v6.webdriver.io')

// switch to Puppeteer
const puppeteerBrowser = await browser.getPuppeteer()
const page = (await puppeteerBrowser.pages())[0]
await page.setRequestInterception(true)
page.on('request', interceptedRequest => {
    if (interceptedRequest.url().endsWith('webdriverio.png')) {
        return interceptedRequest.continue({
            url: 'https://user-images.githubusercontent.com/10379601/29446482-04f7036a-841f-11e7-9872-91d1fc2ea683.png'
        })
    }

    interceptedRequest.continue()
})

// continue with WebDriver commands
await browser.refresh()
await browser.pause(2000)

await browser.deleteSession()