shared module

1 readme.md

node.js module hickups

modules in node are great. sharing them in npm is even better.

• make sure you understand, that module when you require the same module from within the same directory, you get the reference to the same thing.
• if you require the same module in files wich are located in different directories, you get two new module instances.

run

node b.js

a.js

var c = {
  a: 1,
  b: 2
};

module.exports = function() {

};

module.exports.set = function(key, val) {
  c[key] = val;
};

module.exports.print = function() {
  var json = JSON.stringify(c, null, 2);
  console.log(json);
};

b.js

var a1 = require('./a');
a1.set('b', 22);
a1.print();

var a2 = require('./a');
a2.print();
a2.set('c', 33);

a1.print();

/*
 ouput:
 {
 "a": 1,
 "b": 22
 }
 {
 "a": 1,
 "b": 22
 }
 {
 "a": 1,
 "b": 22,
 "c": 33
 }

 */