Splitting a JavaScript namespace into multiple files

2018-05-29 22:24:38

Let's say I have a namespace like that:

var myNamespace = {
    foo: function() {
    },
    bar: function() {
    }
};

What is the best way to split this code into files defining foo and bar separately?

I'm not worried about loading time - I'll concatenate it back into one file before deployment.

At the start of each file:

if(myNameSpace === undefined) {
  var myNameSpace = {};
}

File 1:

myNamespace.foo = function()...

File 2:

myNamespace.bar = function()...

// File1:
// top level namespace here:
var myNamespace = myNamespace || {};

// File2:
myNamespace.foo = function() {
    // some code here...
}

In each file follow this pattern:

(function(nameSpace) {
    nameSpace.foo = function() { ... };
})(window.nameSpace = window.nameSpace || {});

This way load ordering is unimportant.

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