添加gulp-babel如何导致回调错误?

时间:2019-02-11 14:03:05

标签: javascript gulp babeljs babel

我正在尝试通过向其添加gulp-babel来稍微修改gulp样板。

我在gulpfile中的Javascript任务中添加了babel预设:

var jsTasks = lazypipe()
    .pipe(header, banner.full, {
        package: package
    })
    .pipe(optimizejs)
    .pipe(dest, paths.scripts.output)
    .pipe(rename, {
        suffix: '.min'
    })
    .pipe(babel, {
        presets: ['es2015']
    })
    .pipe(uglify)
    .pipe(optimizejs)
    .pipe(header, banner.min, {
        package: package
    })
    .pipe(dest, paths.scripts.output);

我得到的错误:

[13:47:27] Finished 'default' after 429 ms
error!
events.js:174
      throw er; // Unhandled 'error' event
      ^

Error: write callback called multiple times
    at DestroyableTransform.afterTransform (/Users/mac/dev/gulp-boilerplate/node_modules/readable-stream/lib/_stream_transform.js:84:31)
    at Stream.<anonymous> (/Users/mac/dev/gulp-boilerplate/node_modules/gulp-flatmap/index.js:62:9)
    at Stream.emit (events.js:189:13)
    at Stream.EventEmitter.emit (domain.js:459:23)
    at Pumpify.handleEnd (/Users/mac/dev/gulp-boilerplate/node_modules/duplexer/index.js:81:21)
    at Pumpify.emit (events.js:194:15)
    at Pumpify.EventEmitter.emit (domain.js:459:23)
    at endReadableNT (/Users/mac/dev/gulp-boilerplate/node_modules/readable-stream/lib/_stream_readable.js:1010:12)
    at process._tickCallback (internal/process/next_tick.js:63:19)
Emitted 'error' event at:
    at DestroyableTransform.EventEmitter.emit (domain.js:454:12)
    at DestroyableTransform.afterTransform (/Users/mac/dev/gulp-boilerplate/node_modules/readable-stream/lib/_stream_transform.js:84:17)
    at Stream.<anonymous> (/Users/mac/dev/gulp-boilerplate/node_modules/gulp-flatmap/index.js:62:9)
    [... lines matching original stack trace ...]
    at process._tickCallback (internal/process/next_tick.js:63:19)

没有gulp-babel,我没有收到该错误,但随后我无法在代码中使用ES6。 究竟是什么引起回调错误,如何解决?

0 个答案:

没有答案