Gulp 4.0 信号异步完成错误尽管返回流

Question

我有以下 gulp 任务 returns 一个流。它在 gulp 3.9.1 中运行良好，但转换为 gulp 4.0 时，我得到：

Did you forget to signal async completion?

const gulp = require('gulp');
const gulpif = require('gulp-if');
const plumber = require('gulp-plumber');
const rename = require('gulp-rename');
const buffer = require('vinyl-buffer');
const es = require('event-stream');
const browserify = require('browserify');
const browserifyInc = require('browserify-incremental');
const babelify = require('babelify');
const browserSync = require('browser-sync').create();

// Incrementally building the js
gulp.task('build-js-inc', () =>
  es.merge.apply(null, paths.entry.scripts.map(script => {
    const b = browserify(Object.assign({}, browserifyInc.args,
      {
        entries: script,
        extensions: ['.jsx'],
        debug: true
      }
    ));

    browserifyInc(b, { cacheFile: './browserify-cache.json' });

    return b.transform(babelify)
      .bundle()
        .on('error', handleErrors)
        .pipe(source(`./${script.split('/')[script.split('/').length - 1]}`))
        .pipe(buffer())
        .pipe(plumber())
        .pipe(rename(path => {
          path.extname = '.bundle.js';
        }))
        .pipe(gulp.dest('public/js'))
        .pipe(gulpif('*sw.bundle.js', gulp.dest('public')))
        .pipe(browserSync.reload({ stream: true }));
  }))
);

我已经尝试将 done() 添加到我的上游任务中，但它仍然出错，因为我认为它起源于此并通过我的后续任务传播，这些任务依赖于此完成。

Answer 1

问题最终出在模块 event-stream 上。显然是 no longer being maintained.

@phated:

Support for event-stream is deprecated. Everything is supposed to move to through2, et al. Maybe just fully deprecate this module?

我切换到 merge-stream，现在我的 gulpfile 工作正常。

Gulp 4.0 信号异步完成错误尽管返回流

Gulp 4.0 signal async completion error despite returning stream

javascript

gulp

gulp-4