当我观察index.html(中的完整路径CONFIG.APP.INDEX)中的更改时出现错误。我所有的任务都在单独的文件中。这是tasks/watch.ts,例如:
import * as CONFIG from '../config';
export default done => {
  // other watches
  gulp.watch(CONFIG.APP.INDEX, gulp.series('inject'));
};
第一次更改任务正常执行,但在第二次更改时出现此错误:
c:\~\node_modules\through2\node_modules\readable-stream\lib\_stream_writable.js:203
  var er = new Error('write after end');
           ^
Error: write after end
    at writeAfterEnd (c:\~\node_modules\through2\node_modules\readable-stream\lib\_stream_writable.js:203:12)
    at DestroyableTransform.Writable.write (c:\~\node_modules\through2\node_modules\readable-stream\lib\_stream_writable.js:239:20)
    at DestroyableTransform.ondata (c:\~\node_modules\through2\node_modules\readable-stream\lib\_stream_readable.js:531:20)
    at emitOne (events.js:77:13)
    at DestroyableTransform.emit (events.js:169:7)
    at readableAddChunk (c:\~\node_modules\through2\node_modules\readable-stream\lib\_stream_readable.js:198:18)
    at DestroyableTransform.Readable.push (c:\~\node_modules\through2\node_modules\readable-stream\lib\_stream_readable.js:157:10)
    at DestroyableTransform.Transform.push (c:\~\node_modules\through2\node_modules\readable-stream\lib\_stream_transform.js:123:32)
    at afterTransform (c:\~\node_modules\through2\node_modules\readable-stream\lib\_stream_transform.js:79:51)
    at TransformState.afterTransform (c:\~\node_modules\through2\node_modules\readable-stream\lib\_stream_transform.js:58:12)
    at c:\~\node_modules\vinyl-fs\lib\src\getContents\bufferFile.js:18:5
    at c:\~\node_modules\graceful-fs\graceful-fs.js:78:16
    at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:404:3)
任务/inject.ts任务:
declare var require;
const gulp = require('gulp');
const plugins = require('gulp-load-plugins')();
import * as CONFIG from '../config';
export default done => {
  return gulp
    .src(CONFIG.APP.INDEX)
    .pipe(require('../util/inject/fixes').default) // <--- PROBLEM IS HERE
    // other stuff...
    .pipe(gulp.dest(CONFIG.DST.BUILD))
    .on('error', plugins.util.log);
};
util/inject/fixes.ts任务
declare var require;
const plugins = require('gulp-load-plugins')();
// errors even with this...
export default plugins.util.noop();
任务是这样加载的gulpfile.ts/index.ts:
fs.readdirSync('./gulpfile.ts/tasks').map(file => {
  let name = file.replace(/\.ts$/, '');
  let task = require(path.join(path.resolve('.'), 'gulpfile.ts', 'tasks', file));
  gulp.task(name, task.default);
});
我已经设法确定错误来自哪里,但不知道是什么原因造成的,或者如何解决它。index.html 仅在第一次更改和任务执行后观看时才会出现问题。手动运行task正常(gulp inject),其他所有watch和task正常。