我需要建立的咕嘟咕嘟的任务，像这样的顺序：
任务1 - > Task2A，Task2B，Task2C - >任务3，
其中任务2A，2B，2C并行运行（但task1应该在之前完成，并且只完成一次）。
我尝试过：
gulp.task（'Task1'，[]）; gulp.task（'Task2A'，['Task1']）; gulp.task（'Task2B'，['Task1']）; gulp.task（'Task2C'，['Task1']）; gulp.task（'Task3'，['Task2A'，'Task2B'，'Task2C']）;看起来像是在工作，但我不确定，它是否保证只会执行Task1 1次，或者它可以被触发多次？
谢谢。
解决方案也许最简单的方法（不使用gulp4.0）是 run-序列插件。
您的情况：
var runSequence = require（'run-sequence'）; gulp.task（'build'，function（callback）{ runSequence（'Task1'， ['Task2A'，'Task2B'，'Task2C']，'Task3'，回调）; }）;确保您的所有任务都有返回语句。
请注意
这是一个临时解决方案，直到发布gulp 4.0应该支持定义任务
考虑到Gulp 4似乎永远不会完全发布，请将其作为您的愿望。请注意，此解决方案是一种破解方式，可能会在将来更新gulp时停止工作。
I need to build a sequence of Gulp tasks like this:
Task1 -> Task2A, Task2B, Task2C -> Task3,
where tasks 2A,2B,2C run in parallel(but task1 should be completed before, and completed just once).
What I tried:
gulp.task('Task1', []); gulp.task('Task2A', ['Task1']); gulp.task('Task2B', ['Task1']); gulp.task('Task2C', ['Task1']); gulp.task('Task3', ['Task2A', 'Task2B', 'Task2C']);Looks like it's working, but I'm not sure, does it guarantee that Task1 will be executed only 1 time, or it can be triggered multiple times?
Thank you.
解决方案Perhaps the simplest way to do this (without using gulp4.0) is the run-sequence plugin.
For your case:
var runSequence = require('run-sequence'); gulp.task('build', function(callback) { runSequence( 'Task1', ['Task2A', 'Task2B', 'Task2C'], 'Task3', callback); });Make sure you have return statements in all your tasks.
Please Note
This was intended to be a temporary solution until the release of gulp 4.0 which should have support for defining task dependencies similarly.
Given that Gulp 4 appears to never be fully released, take that for what you will. Be aware that this solution is a hack, and may stop working with a future update to gulp.
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