ToolJet/frontend/cypress/plugins/index.js

module.exports = (on, config) => {
  if (config.testingType === 'component') {
    const { startDevServer } = require('@cypress/webpack-dev-server');

    // Your project's Webpack configuration
    const webpackConfig = require('../../webpack.config.js');

    on('dev-server:start', (options) => startDevServer({ options, webpackConfig }));
  }

  return config;
};