namespace / module: Duplicate declaration & needlessly remove line-breaks

I wonder why TSC re-declare a global var after each namespace or module block.

namespace OurName {
    export var isAndroid = true;
    export var isWinPhone = false;
    // do something
    var checkCookies = function() {
        return true;
    }
}

namespace OurName {
    export var HTML = '<b>hello</b>';
    export var state = [1, 2, 3];
    export var addToCart = function() {
        return true;
    }
}

namespace OurName {
    var xyz = false;
    // do something
    export module Office {
        var isClosed = false;
    }
}

Above code is translated to:

var OurName;
(function (OurName) {
    OurName.isAndroid = true;
    OurName.isWinPhone = false;
    // do something
    var checkCookies = function () {
        return true;
    };
})(OurName || (OurName = {}));
var OurName;
(function (OurName) {
    OurName.HTML = '<b>hello</b>';
    OurName.state = [1, 2, 3];
    OurName.addToCart = function () {
        return true;
    };
})(OurName || (OurName = {}));
var OurName;
(function (OurName) {
    var xyz = false;
    // do something
    var Office;
    (function (Office) {
        var isClosed = false;
    })(Office = OurName.Office || (OurName.Office = {}));
})(OurName || (OurName = {}));

It also removes the line-breaks that help me keeping the code easier to look. I am porting our production ES5 code to TypeScript, so I have to carefully re-check the output of TSC. This behaviour makes my work even harder.

Start by reproducing the namespace and module example with TSC and comparing the emitted JavaScript. Inspect the compiler path responsible for namespace/module emission, then define expected output for duplicate declarations and preserved line breaks. Add regression coverage for both formatting concerns and verify the generated output.