Function deepClone

examples/index.js:617–657

(src, refs)

    }

    function deepClone(src, refs) {
        if (typeof src !== 'object' || src === null) {
            return src;
        }
        refs = refs || new Map();
        if (refs.has(src)) {
            return refs.get(src);
        }
        var result;
        if (Array.isArray(src)) {
            result = [];
            refs.set(src, result);
            src.forEach(function (d) {
                result.push(deepClone(d, refs));
            });
        } else if (src instanceof Date) {
            result = new Date(src.getTime());
            refs.set(src, result);
        } else if (src instanceof Node) {
            result = src.cloneNode(true);
            refs.set(src, result);
        } else if (src instanceof String || src instanceof Boolean || src instanceof Number) {
            var Ctor = Object.getPrototypeOf(src).constructor;
            result = new Ctor(src);
            refs.set(src, result);
        } else {
            Ctor = Object.getPrototypeOf(src).constructor;
            result = new Ctor();
            refs.set(src, result);
            Object.setPrototypeOf(result, Object.getPrototypeOf(src));
            var props = Object.getOwnPropertyNames(src);
            for (var i = 0, dtor, len = props.length; i < len; i++) {
                dtor = Object.getOwnPropertyDescriptor(src, props[i]);
                if ('value' in dtor) {
                    dtor.value = deepClone(dtor.value, refs);
                }
                Object.defineProperty(result, props[i], dtor);
            }
        }
        return result;
    }

    function stringifyURIQuery(obj) {
        var params = [];