wishthis/node_modules/fomantic-ui/tasks/build/assets.js

/*******************************
 Build Task
 *******************************/

const
    gulp      = require('gulp'),

    // gulp dependencies
    chmod     = require('gulp-chmod'),
    gulpif    = require('gulp-if'),
    normalize = require('normalize-path'),
    print     = require('gulp-print').default,

    // config
    config    = require('../config/user'),
    tasks     = require('../config/tasks'),
    install   = require('../config/project/install'),

    log       = tasks.log
;

function build(src, config) {
    return gulp.src(src, { base: config.paths.source.themes })
        .pipe(gulpif(config.hasPermissions, chmod(config.parsedPermissions)))
        .pipe(gulp.dest(config.paths.output.themes))
        .pipe(print(log.created))
    ;
}

function buildAssets(src, config, callback) {
    if (!install.isSetup()) {
        console.error('Cannot build assets. Run "gulp install" to set-up Fomantic');
        callback();

        return;
    }

    if (callback === undefined) {
        callback = config;
        config = src;
        src = config.paths.source.themes + '/**/assets/**/*.*';
    }

    // copy assets
    let assets         = () => build(src, config);
    assets.displayName = 'Building Assets';

    gulp.series(assets)(callback);
}

module.exports = function (callback) {
    buildAssets(config, callback);
};

module.exports.watch = function (type, config) {
    gulp
        .watch([normalize(config.paths.source.themes + '/**/assets/**/*.*')])
        .on('all', function (event, path) {
            console.log('Change in assets detected');

            return gulp.series((callback) => buildAssets(path, config, callback))();
        })
    ;
};

module.exports.buildAssets = buildAssets;