Question

Is it possible, using Google Closure compiler, to define a class in two files? For example, if I auto-generate one class and want to keep another one for user-entered code:

In MyClass.AutoGenerated.js

goog.provide("MyClass");
MyClass = function() {
}
MyClass.prototype.SomeMember = 15;

And then in MyClass.js, continue declaring members and functions:

MyClass.prototype.AnotherMember = 15;
MyClass.prototype.SomeAwesomeFunction = function() {};

Answer 1

The only way I found to come close to this, without relying on build order is this:

In MyClass.js

goog.provide("MyClass");
MyClass = function() {
}
MyClass.prototype.SomeMember = 15;

And then in MyClass.Partial.js, continue declaring members and functions and provide a namespace with .Partial (for example):

goog.require("MyClass");
goog.provide("MyClass.Partial");

MyClass.prototype.AnotherMember = 15;
MyClass.prototype.SomeAwesomeFunction = function() {};

Then the calling code must call:

goog.require("MyClass");
goog.require("MyClass.Partial");

in order to include both files in the right order. The MyClass.Partial class does not need to exist in any way; it is just an identifier used by the goog.require and goog.provide methods.