Quick typescript namespace iterator

NameSpaceIterator.js

var NameSpaceIterator;
(function (NameSpaceIterator) {
    function graph(namespace, depth) {
        if (depth === void 0) { depth = 0; }
        var result = "";
        for (var key in namespace) {
            if (namespace.hasOwnProperty(key)) {
                var val = namespace[key];
                if (val !== null && typeof val === "object") {
                    result += "" + getSpaces(depth) + key + "\n";
                    result += graph(val, depth + 1);
                }
                else if (typeof val === "function") {
                    result += getSpaces(depth) + "- " + key + "\n";
                }
            }
        }
        return result;
    }
    NameSpaceIterator.graph = graph;
    function getSpaces(num) {
        var tabs = "";
        for (var i = 0; i < num; i++) {
            tabs += "  ";
        }
        return tabs;
    }
})(NameSpaceIterator || (NameSpaceIterator = {}));

NameSpaceIterator.ts

namespace NameSpaceIterator {
    export function graph(namespace: Object, depth: number = 0) {
        let result = "";

        for (let key in namespace) {
            if (namespace.hasOwnProperty(key)) {
                const val = namespace[key];

                if (val !== null && typeof val === "object") {
                    result += `${getSpaces(depth)}${key}\n`;
                    result += graph(val, depth + 1);
                } else if (typeof val === "function") {
                    result += `${getSpaces(depth)}- ${key}\n`;
                }
            }
        }

        return result;
    }

    function getSpaces(num: number) {
        var tabs = "";

        for (var i = 0; i < num; i++) {
            tabs += "  ";
        }

        return tabs;
    }
}