As you may have noticed, developing our application involves the operation of several tasks together. For instance, in order to run our application, we'll need to transpile our Angular files and then run our Express application. This pattern will repeat itself and even get more complicated. To solve this, developers prefer to automate some of the application functionality and use supportive tools to speed up their work. Some developers prefer using third-party tools, such as Grunt or Gulp, also known as task runners; however, we already use a tool that allows us to run scripts, a tool called NPM. To understand this better, take a look at your package.json file's scripts property:
...
"scripts": {
"tsc": "tsc",
"tsc:w": "tsc -w",
"app": "node server",
"start": "concurrently \"npm run tsc:w\" \"npm run app\" ",
"postinstall": "typings install",
},
...As you can see, you already have five scripts to manage your application developments. In the following sections,...