PROSAGA码农传奇-gulp-Gulp 4 watch gulp.series只运行一次

<div class =“post-text”itemprop =“text”>
  <P>
    我做了一个完整的重写，可以在这里找到：
    <a href="https://github.com/jenstornell/gulpfile-style-script" rel="nofollow noreferrer">
      https://github.com/jenstornell/gulpfile-style-script
    </A>
    。
  </p>
  <P>
    你也可以在这里看到它。希望它可以帮助某人。
  </p>
   <pre>
    <code>
      let gulp = require("gulp");
let sass = require("gulp-sass");
let autoprefixer = require("gulp-autoprefixer");
let concat = require("gulp-concat");
let uglify = require('gulp-uglify-es').default;
let csso = require('gulp-csso');
let rename = require('gulp-rename');

var css = {
  src: 'assets/css/src/**/*.scss',
  dest: 'assets/css/dist',
  filename: 'style.scss'
};

var js = {
  src: 'assets/js/src/**/*.js',
  dest: 'assets/js/dist',
  filename: 'script.js'
};

function style() {
  return (
    gulp
      .src(css.src)
      .pipe(concat(css.filename))
      .pipe(sass())
      .on("error", sass.logError)
      .pipe(autoprefixer())
      .pipe(gulp.dest(css.dest))
      .pipe(csso())
      .pipe(rename({extname: '.min.css'}))
      .pipe(gulp.dest(css.dest))
  );
}

function script() {
  return (
    gulp
      .src(js.src)
      .pipe(concat(js.filename))
      .pipe(gulp.dest(js.dest))
      .pipe(uglify())
      .pipe(rename({extname: '.min.js'}))
      .pipe(gulp.dest(js.dest))
  );
}

function watch(){
  gulp.watch(css.src, style);
  gulp.watch(js.src, script);
}

exports.css = style;
exports.js = script;
exports.default = watch;

</code>
  </pre>
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