沉默地失败 - 没有错误印在控制台上 [英] gulp silently failing - no errors printed to console

问题描述

我的gulp文件没有在gulp.src（）等标准gulp方法上发出任何错误，而且它们的处理程序也不会调用流错误。我已经包含一个简单的文件，默默地失败，只打印开始..并完成..默认消息。

My gulp file is not emitting any errors on either standard gulp methods like gulp.src() with non existant paths nor are stream errors being called by their handler. I've included a simple file that silently fails, printing only the starting.. and finished.. default messages.

var //
  gulp      = require( "gulp" ),
  gulpUtil  = require( "gulp-util" ),
  sass      = require( "gulp-ruby-sass");


 gulp.task( "default", function() {
  gulp.src( "path-that-does-not-exist.scss" )
  .pipe( sass() )
  .on( "error", function( err ) {
    console.log( "this should print" );
  })
  .pipe( gulp.dest( "./client-side/public/compiled" ) );
 });

推荐答案

好的，Gulp正在正确地工作。但是，我听到你的问题是，如果Gulp可以告诉你一个文件是否存在，它将会很好。

Okay, so Gulp is working "correctly." But what I'm hearing in your question is that it would be nice if Gulp could just tell you if a file doesn't exist.

我使用 gulp-expect-file 等等。

I use gulp-expect-file as such

var coffee = require('gulp-coffee');
var expect = require('gulp-expect-file');

gulp.task('mytask', function() {
  var files = ['idontexist.html'];

  return gulp.src(files)
    .pipe(expect(files))
    .pipe(coffee());
});

现在你会在终端中看到这个：

Now you'll see this in the terminal:

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