Question

无法理解我在哪里出错（如果它是我的话），我已经得到了我的（第一个）gulp文件，并且它工作正常：

var gulp = require('gulp');
var uglify = require('gulp-uglify');
var del = require('del');
var sourcemaps = require('gulp-sourcemaps');
var concat = require('gulp-concat');
var handlebars = require('gulp-handlebars');
var wrap = require('gulp-wrap');
var declare = require('gulp-declare');

gulp.task('default', ['clean', 'minify-external', 'minify-internal']);

gulp.task('clean', function() {
    del(['build/js/'], function(err){ });
});

gulp.task('minify-external', function() {
    return gulp.src([
        'bower_components/jquery/dist/jquery.js',
        'bower_components/handlebars/handlebars.js',
        'bower_components/ember/ember.js',
        'bower_components/ember-data/ember-data.js',
    ])
    .pipe(sourcemaps.init())
        .pipe(uglify())
        .pipe(concat('scripts.min.js'))
    .pipe(sourcemaps.write('.'))
    .pipe(gulp.dest('build/js/'));
});

gulp.task('minify-internal', function() {
    return gulp.src('src/js/**/*.js')
    .pipe(sourcemaps.init())
        .pipe(uglify())
        .pipe(concat('lib.min.js'))
    .pipe(sourcemaps.write('.'))
    .pipe(gulp.dest('build/js//'));
});

gulp.watch('src/js/**/*.js', ['minify-internal']);

接下来，我正在尝试将手柄预编译添加到其中：

//above omitted for brevity
gulp.task('default', ['clean', 'minify-external', 'minify-internal']);

//...
gulp.task('templates', function() {
    return gulp.src('src/templates/**/*.hbs')
    .pipe(handlebars())
    .pipe(wrap('Handlebars.template(<%= contents %>)'))
    .pipe(declare({
        namespace: 'Todos.templates',
        noRedeclare: true, // Avoid duplicate declarations
    }))
    .pipe(concat('templates.min.js'))
    .pipe(gulp.dest('build/js/'));
});

现在脚本失败了：

Error: EEXIST, mkdir '[BUILD PATH]/build/js'

似乎特定于templates任务，因为其他两个minify-x任务运行正常。我尝试过异步和同步运行（即从任务中删除return语句）。我错过了关于流如何在这里互动的内容吗？从多个任务输出到同一个文件夹是否正常？

吞噬同一目的地的多个任务失败

0 个答案: