問題描述

有沒有辦法根據設置的 NODE_ENV 指定 gulp 任務?

Is there a way to specify a gulp task depending on the NODE_ENV that is set?

例如在我的 package.json 文件中，我有類似的內容:

For example in my package.json file, I have something like:

"scripts": {
    "start": "gulp"
 }

我有多個 gulp 任務

gulp.task('development', function () {
   // run dev related tasks like watch 
});

gulp.task('production', function () {
   // run prod related tasks
});

如果我設置NODE_ENV=production npm start，我可以指定只運行gulp production嗎?或者有更好的方法嗎?

If I set NODE_ENV=production npm start, can I specify to only run gulp production? Or is there a better way to do this?

推薦答案

在你的默認 gulp 任務中使用一個三元組，你可以有類似的東西:

Using a single ternary in your default gulp task, you can have something like:

gulp.task('default',
  [process.env.NODE_ENV === 'production' ? 'production' : 'development']
);

然后您將能夠在您的 package.json 中保留單個 gulp 命令并像您所說的那樣使用它:

You will then be able to keep the single gulp command in your package.json and using this like you said:

NODE_ENV=production npm start

NODE_ENV 變量的任何其他值都將啟動 development 任務.

Any other value of your NODE_ENV variable will launch the development task.

您當然可以使用允許多個任務的對象進行高級用法并避免 if 樹地獄:

You could of course do an advanced usage using an object allowing for multiple tasks and avoiding if trees hell:

var tasks = {
  development: 'development',
  production: ['git', 'build', 'publish'],
  preprod: ['build:preprod', 'publish:preprod'],
  ...
}

gulp.task('default', tasks[process.env.NODE_ENV] || 'fallback')

請記住，當給定一組任務時，它們將并行運行.

Keep in mind that when giving an array of tasks, they will be run in parallel.

這篇關于根據 NODE_ENV 設置 gulp 任務的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！