sp-dev-fx-webparts/samples/react-functional-component-with-data-fetch/gulpfile.js

'use strict';

const gulp = require('gulp');
const build = require('@microsoft/sp-build-web');
build.addSuppression(`Warning - [sass] The local CSS class 'ms-Grid' is not camelCase and will not be type-safe.`);
build.configureWebpack.mergeConfig({
    additionalConfiguration: (config) => {
        config.externals = config.externals.filter(name => !(["react", "react-dom"].includes(name)))
        return config;
    }
});

var getTasks = build.rig.getTasks;
build.rig.getTasks = function () {
  var result = getTasks.call(build.rig);

  result.set('serve', result.get('serve-deprecated'));

  return result;
};

build.initialize(gulp);