how to import external library to nodejs

Question

I would like to know how can I import an external library to nodejs. For example I would like to have phanotmjs library (I know that arelady exist an npm to get phantomjs, b

Answer 1

When one requires a module on nodejs, the content of module.exports is returned. So, one can return a function (as you do on your example) or an object, as in

in module.js:

module.exports={
    func:function(){ return true; },
    val:10,
    ...
}

So that, in the requiring file, you can:

 var m=require('module');

 assert(m.func()===true);
 assert(10===m.val);

This is explained in the nodejs documentation under Modules

So if you have an external JS library that exposes three functions: a, b, and c, you might wrap them as:

module.exports={
    exportedA:lib.a,
    exportedB:lib.b,
    exportedC:lib.c
};

lib.a=function(){ ... };

lib.b=function(){ ... };

lib.c=function(){ ... };