Gulp中的任务依赖 [英] Task Dependency in Gulp

问题描述

因此，当我运行 build 时，需要连续执行其他两个任务。当 task-a 时，首先运行 task-a code>完成
任务-b 执行。

目前我使用这个脚本，我想确认是正确的。

  gulp.task（'build'，[
'task-a'，
'task-b'
]）; 
  

解决方案

将平行运行（全部在一次），所以不要认为任务会按顺序开始/结束。

您必须明确定义任务的顺序如下所示，让Gulp锻炼出正确的顺序：

  gulp.task（'task-a'，function（）{.. 。}）; 
 
 gulp.task（'task-b'，['task-a']，function（）{...}）; 
 
 gulp.task（'build'，['task-a'，'task-b']，function（）{...}）; 
  

此时您将尝试运行 build Gulp将构建任务和锻炼的依赖关系树，该任务和锻炼 task-b 依赖于 task-a 在执行前完成。

更完整的例子可以在这里找到： https://github.com/gulpjs/gulp/blob/master/docs/recipes/running-tasks-in-series.md

I have a task in gulp that need to execute other two tasks consecutively and in order.

So when I run build, build run first task-a, when task-a is completed task-b is performed.

At the moment I am using this script, I would like to have confirmation the is correct.

 gulp.task('build', [
        'task-a',
        'task-b'
    ]);

解决方案

As stated at the official documentation with that format the tasks will run in parallel (all at once), so don't assume that the tasks will start/finish in order.

You have to explicitly define the order of tasks as follow to make Gulp workout the right order:

gulp.task('task-a', function(){ ... });

gulp.task('task-b', ['task-a'], function(){ ... });

gulp.task('build', ['task-a', 'task-b'], function(){ ... });

At this point when you'll try to run build Gulp will build the dependency tree of the tasks and workout that task-b relies on task-a to be completed before executing.

A more complete example can be found here: https://github.com/gulpjs/gulp/blob/master/docs/recipes/running-tasks-in-series.md

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