Question

我有一个应用，该应用的gulpfile非常适中。我刚刚将Gulp从v3.9.1升级到v4.0.2，并修改了gulpfile.js。所有任务都可以正常工作，只有watch无效。

没有错误，但是Gulp监视似乎没有检查已定义的文件中的更改：

$  gulp -v
CLI version: 2.2.0
Local version: 4.0.2
$ gulp
[11:39:34] Using gulpfile /var/www/.../my-app/gulpfile.js
[11:39:34] Starting 'default'...
[11:39:34] Starting 'run'...
[11:39:34] Starting 'build-less'...
[11:39:34] Finished 'build-less' after 16 ms
[11:39:34] Starting 'build-vendors'...
[11:39:34] Finished 'build-vendors' after 5.5 ms
[11:39:34] Finished 'run' after 23 ms
[11:39:34] Starting 'watch-files'...
[11:39:34] Starting 'watchFiles'...

如何使Gulp手表适用于Gulp v4？

这是我原本的gulpfile.js的大嘴豆v3：

/**
 * Gulp File
 *
 * run `gulp run && gulp watch-files` on the command line
 */

// Include Gulp plugins
var gulp = require('gulp'),
    less = require('gulp-less'),
    watch = require('gulp-watch'),
    prefix = require('gulp-autoprefixer'),
    plumber = require('gulp-plumber'),
    filter = require('gulp-filter'),
    rename = require('gulp-rename'),
    path = require('path')
;

// Compile LESS to CSS
gulp.task('build-less', function() {
    const fileFilter = filter(['**/*', '!**/mixins.less', '!**/variables.less']);
    gulp.src('./public/less/*.less') // path to less file
        .pipe(fileFilter)
        .pipe(plumber())
        .pipe(less())
        .pipe(gulp.dest('./public/css/')) // path to css directory
    ;
});

// Get vendors' code
gulp.task('build-vendors', function() {
    gulp.src(['./public/components/bootstrap/less/theme.less', './public/components/bootstrap/less/bootstrap.less']) // path to less file
        .pipe(plumber())
        .pipe(less())
        .pipe(rename(function (path) {
            //rename all files except 'bootstrap.css'
            if (path.basename + path.extname !== 'bootstrap.css') {
                path.basename = 'bootstrap-' + path.basename;
            }
        }))
        .pipe(gulp.dest('./public/css')) // path to css directory
    ;
});

// Run the build process
gulp.task('run', ['build-less', 'build-vendors']);

// Watch all LESS files, then run build-less
gulp.task('watch', function() {
    gulp.watch('public/less/*.less', ['run'])
});

// Default will run the 'entry' task
gulp.task('default', ['watch', 'run']);

这是Gulp v4的新变种：

/**
 * Gulp File
 *
 * run `gulp run && gulp watch-files` on the command line
 */

// Include Gulp plugins
var gulp = require('gulp'),
    less = require('gulp-less'),
    watch = require('gulp-watch'),
    prefix = require('gulp-autoprefixer'),
    plumber = require('gulp-plumber'),
    filter = require('gulp-filter'),
    rename = require('gulp-rename'),
    path = require('path')
;

// Compile LESS to CSS
function buildLess(done) {
    const fileFilter = filter(['**/*', '!**/mixins.less', '!**/variables.less']);
    gulp.src('./public/less/*.less') // path to less file
        .pipe(fileFilter)
        .pipe(plumber())
        .pipe(less())
        .pipe(gulp.dest('./public/css/')) // path to css directory
    ;
    done();
};

// Get vendors' code
function buildVendors(done) {
    gulp.src(['./public/components/bootstrap/less/theme.less', './public/components/bootstrap/less/bootstrap.less']) // path to less file
        .pipe(plumber())
        .pipe(less())
        .pipe(rename(function (path) {
            //rename all files except 'bootstrap.css'
            if (path.basename + path.extname !== 'bootstrap.css') {
                path.basename = 'bootstrap-' + path.basename;
            }
        }))
        .pipe(gulp.dest('./public/css')) // path to css directory
    ;
    done();
};

// Watch all LESS files, then run build-less
function watchFiles() {
    return gulp.watch(['public/less/*.less'], gulp.series('build-less'));
};

gulp.task('build-less', buildLess);
gulp.task('build-vendors', buildVendors);
gulp.task('run', gulp.series('build-less', 'build-vendors'));
gulp.task('watch-files', gulp.series(watchFiles));
gulp.task('default', gulp.series('run', 'watch-files'));

Answer 1

我刚刚测试过

我确实在全球范围内安装了最新版本的gulp

npm install gulp -g

gulp -v CLI version: 2.2.0 Local version: 4.0.2

然后

gulp run watch-files

在进行任何更改后更新css文件

所以我建议使用path软件包，而不是静态地写文件夹的路径。

示例：

path.resolve(__dirname, "foo/bar/less/");

从v3迁移到v4后，如何使Gulp watch正常工作？

1 个答案: