Erroneous function expression instead of declaration

[karolciba]

In the "The Pause That Refreshes: Rebinding and References" chapter, section modules. Where there's:

var DrawModule = (function () {

return {
drawLine: drawLine,
drawRect: drawRect,
drawCircle: drawCircle
}

// public methods
var drawLine = function (screen, leftPoint, rightPoint) { ... }
var drawRect = function (screen, topLeft, bottomRight) { ... }
var drawCircle = function (screen, center, radius) { ... }

// private helpers
function bitBlt (screen, ...) { ... }
function resize (screen, ...) { ... }

})();

which returns

Object { drawLine=undefined, drawRect=undefined, drawCircle=undefined}

should rather be (based on what I've learned in "function declarations"):

var DrawModule = (function () {

return {
drawLine: drawLine,
drawRect: drawRect,
drawCircle: drawCircle
}

// public methods
drawLine = function (screen, leftPoint, rightPoint) { ... }
drawRect = function (screen, topLeft, bottomRight) { ... }
drawCircle = function (screen, center, radius) { ... }

// private helpers
function bitBlt (screen, ...) { ... }
function resize (screen, ...) { ... }

})();

or

var DrawModule = (function () {

// public methods
var drawLine = function (screen, leftPoint, rightPoint) { ... }
var drawRect = function (screen, topLeft, bottomRight) { ... }
var drawCircle = function (screen, center, radius) { ... }

return {
drawLine: drawLine,
drawRect: drawRect,
drawCircle: drawCircle
}

// private helpers
function bitBlt (screen, ...) { ... }
function resize (screen, ...) { ... }

})();

Otherwise module will return POJO with undefined references before executing function expression.