@revoloo/cypress6/packages/server/test/support/fixtures/projects/browser-extensions/cypress/plugins/index.js

Cypress.io end to end testing tool

const path = require('path')

module.exports = (on) => {
  on('before:browser:launch', (browser, options) => {
    options.extensions.push(path.join(__dirname, '../../../plugin-extension/ext'))
    options.preferences.devTools = true

    return options
  })
}