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.

まず、TSC を使って namespace と module の例を再現し、出力された JavaScript を比較します。namespace/module の出力を担当するコンパイラーパスを調査し、その後、重複する宣言と保持される改行について期待される出力を定義します。両方のフォーマット上の問題に対する回帰テストを追加し、生成された出力を検証します。