text: const gulp = require('gulp')
  const sass = require('gulp-sass')
  const uglifycss = require('gulp-uglifycss')
  const concat = require('gulp-concat')
  
  gulp.task('default', ['copiarHTML'], () => {
      gulp.src('src/sass/index.scss')/* Index importa todos os outros arquivos .scss */
          .pipe(sass().on('error', sass.logError))
          .pipe(uglifycss({"uglyComments":true}))
          .pipe(concat('estilo.min.css'))
          .pipe(gulp.dest('build/css'))
  })
  
  /* simplesmente copiar o arquivo de index para build */
  
  gulp.task('copiarHTML', () => {
      gulp.src('src/index.html')
          .pipe(gulp.dest('build'))
  })