gulpfile.js

const { src, dest, series, parallel } = require('gulp');
const del = require('del');
const log = require('fancy-log');

const paths = {
    react_src: 'src/main/javascript/bug-tracker/build/**/*',
    react_dist: 'src/main/resources/static/'
};

function clean()  {
    log('removing the old files in the directory')
    return del('src/main/resources/static/**', {force:true});
}

function copyReactCodeTask() {
    log('copying React code into the directory')
    return src(`${paths.react_src}`)
        .pipe(dest(`${paths.react_dist}`));
}

exports.default = series(
    clean,
    copyReactCodeTask
);