javascript - Node Require with two Parenthesis -

Try to read code codes recently and find this line of code:

 < Code> var debug = requirement ('debug') ('co-root');  

What does this mean? Why use ('debug') and then ('Co-root')? You can find the code and I say that I get this line of code in the KoA-Root Medium Ware definition

Module looks basically something like this:

  function to run () {// do stuff} module.exports = toRun;  

Then your script code does the following:

  var ran = require ('torun') ();  

This is a convenient way to expose some of the frequently used items, but it is also useful if you have some methods on directly exported functions Want to expose. For example:

  toun () {// do stuff} toRun.morestuff = function () {// and then}; Module.exports = toRun;  

Then you can catch the whole thing to gain access to additional tasks:

  var toRun = require ('torun'); Var ran = toRun (); Var accessories = toRun.moreStuff ();