How to use the magix-combine.combine function in magix-combine

gulp.task('rely', () => {
    combineTool.config({
        log: false,
        tmplFolder: 'dist',
        srcFolder: 'build'
    })
    return combineTool.combine().then(() => {
        console.log('complete');
    }).catch(ex => {
        console.log('gulpfile:', ex);
    });
});

gulp.task('build', ['cleanBuild','copyImagesBuild'], function() {
    combineTool.config({
        compressCss: true
    });


    combineTool.combine().then(() => {
        gulp.src(srcFolder + '/**/*.js')
            .pipe(uglify({
                compress: {
                    drop_console: true
                },
                output: {
                    ascii_only: true
                }
            }))
            .pipe(gulp.dest(buildFolder));
    });
});