Insignificant Order Deep-Equals for Arrays and Objects in Javascript

main.js

function insignificantOrderDeepContains(haystack, needle) {
    var matched = false;
    haystack.forEach(function(straw) {
        if(matched) return;
        if(insignificantOrderDeepEquals(straw, needle)) {
            matched = true;
        }
    });
    return matched;
}

function insignificantOrderDeepEquals(obj1, obj2) {
    var matching = true;
    Object.keys(obj1).forEach(function(key) {
        if(!matching) return;
        if(typeof obj1[key] === "object" && obj1[key] != null) {
            if(typeof obj2[key] !== "object" || obj2[key] == null) {
                matching = false;
                return;
            }
            matching = insignificantOrderDeepEquals(obj1[key], obj2[key]);
        }
        if(typeof obj1[key] === "array") {
            if(typeof obj2[key] !== "array") {
                matching = false;
                return;
            }
            var innerMatching = true;
            obj1[key].forEach(function(e) {
                if(!innerMatching) return;
                if(typeof e === "object" && e != null) {
                    innerMatching = insignificantOrderDeepContains(obj2[key], e);
                    return;
                }
                innerMatching = _.contains(obj2[key], e);
            });
        }
        matching = obj1[key] === obj2[key];
    });
    return matching;
}