- Implement Hello World in Node
- Run the script from the terminal
In this lab, you'll practice how to run Node scripts from command line. In addition, you'll develop your first Node application—Hello World, the traditional first app in any language.
- Create file
hello-world.js
and open it in your favorite editor - Implement an expression (function with
return
) which returns "Hello World". Be very meticulous about the function output. Don't worry about the specific name of the function. It can be whatever you want! - Export your expression (function with
return
) withmodule.exports = <function name>
to allow other programs, modules and especially our wonderful Learn lab tests to verify your solution. In other words, you need to export this expression/function so that our specs have access to this function to test the return value. - Install testing dependencies with
npm install
. You need to runnpm install
just once for each lab. It will download Mocha, Chai and other dependencies for the tests. - Run tests with
npm test
.
Tip: Don't overthink it.
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