Question

我尝试使用gulp-pump和gulp-run-sequence，但是遇到了关于task completion callback called too many times的错误。

以下是我的Gulpfile：

var gulp = require('gulp');
var sass = require('gulp-sass');
var uglify = require('gulp-uglify');
var autoprefixer = require('gulp-autoprefixer');
var cleanCSS = require('gulp-clean-css');
var rename = require('gulp-rename');
var runSequence = require('run-sequence');
var pump = require('pump');

var pumpCb = function (err) {
    if (err) {
        console.log('Error: ', err.toString());
    }
};

// Local

gulp.task('local-sass', function (pumpCb) {
    return pump([
            gulp.src('public/assets/src/sass/**/*.scss'),
            sass(),
            autoprefixer(),
            gulp.dest('public/assets/dist/css/')
        ],
        pumpCb
    );
});

gulp.task('local-js', function (pumpCb) {
    return pump([
            gulp.src('public/assets/src/js/**/*.js'),
            uglify(),
            gulp.dest('public/assets/dist/js/')
        ],
        pumpCb
    );
});

// Production

gulp.task('prod-sass', function (pumpCb) {
    return pump([
            gulp.src('public/assets/src/sass/**/*.scss'),
            sass({outputStyle:'compact'}),
            autoprefixer(),
            gulp.dest('public/assets/dist/css/')
        ],
        pumpCb
    );
});

gulp.task('prod-css', function (pumpCb) {
    return pump([
            gulp.src(['./public/assets/dist/css/**/*.css','!./public/assets/dist/css/**/*.min*']),
            cleanCSS(),
            rename({ suffix: '.min' }),
            gulp.dest('public/assets/dist/css/')
        ],
        pumpCb
    );
});

gulp.task('prod-js', function (pumpCb) {
    return pump([
            gulp.src('public/assets/src/js/**/*.js'),
            uglify(),
            rename({ suffix: '.min' }),
            gulp.dest('public/assets/dist/js')
        ],
        pumpCb
    );
});

// Calls

gulp.task('default', function () {
    gulp.watch('public/assets/src/sass/**/*.scss',['local-sass']);
    gulp.watch('public/assets/src/js/**/*.js',['local-js']);
});

gulp.task('prod', function () {
    runSequence('prod-sass','prod-css','prod-js');
});

从run-sequence和pump的文档中我无法看到我做错了什么，所以也许这对Gulp有更广泛的误解？

我已经阅读了大部分关于同一错误的答案，但我不认为它们适用于这个特定情况，我也不知道如何将他们的发现推断到我自己的Gulpfile上。

任何帮助将不胜感激！

Answer 1

我的gulp任务中也出现了这个错误。这是因为你有一个return语句而你正在调用任务回调pumpCb。删除return语句。

Gulp（泵，运行顺序）＆＃34;任务完成回调调用太多次＆＃34;

1 个答案: