如何在打字稿文件更改时观察和重新加载ts-node [英] How to watch and reload ts-node when typescript file changes

问题描述

我试图用typescript和angular2应用程序运行一个开发服务器，但没有每次都检测ts文件，我发现我可以用ts-node来运行，但我也想看.ts文件并重新加载应用程序/服务器因为我会用吞咽手表之类的东西。

解决方案

我一直在为我的开发环境苦苦挣扎，直到我注意到nodemon的api允许我们改变它的默认行为为了执行自定义命令。一个例子如下所示：

  nodemon --watch'src / ** / *。ts'--ignore 'src / ** / *。spec.ts'--exec'ts-node'src / index.ts 
  

或者更好的并且将nodemon的配置外部化，因为Sandokan通过以下内容获取到nodemon.json文件，然后运行nodemon：

  {watch：[src / ** / *。ts]，ignore：[src / ** / *。spec.ts]，exec：ts-node ./index.ts} 
  

凭借这样做，您可以实时重新加载一个ts节点过程，而不必担心底层的实现。

干杯！

已更新对于最新版本的nodemon：

使用以下内容创建一个nomdemon.json文件。

< pre $
$ watch $ $ b $ ex $ $ $ $ $ $ $ $ $ $ $'$' ** / *。spec.ts]，
exec：ts-node ./src/index.ts
}

Im trying to run a dev server with typescript and an angular2 application without transpiling ts files every time, I found that i can do the running with ts-node but i want also to watch .ts files and reload the app/server as i would do with something like gulp watch.

解决方案

I was struggling with the same thing for my development environment until i noticed that nodemon's api allows us to change it's default behaviour in order to execute a custom command. An example of this would be like follows:

nodemon --watch 'src/**/*.ts' --ignore 'src/**/*.spec.ts' --exec 'ts-node' src/index.ts

Or even better and externalize nodemon's config as Sandokan sugested to a nodemon.json file with the following content, and then just run nodemon:

{ "watch": ["src/**/*.ts"], "ignore": ["src/**/*.spec.ts"], "exec": "ts-node ./index.ts" }

By virtue of doing this you'll be able to live-reload a ts-node process without having to worry about the underlying implementation.

Cheers!

Updated for most recent version of nodemon:

Create a nomdemon.json file with the following content.

{
  "watch": ["src"],
  "ext": "ts",
  "ignore": ["src/**/*.spec.ts"],
  "exec": "ts-node ./src/index.ts"
}

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