define(function(require, exports, module) {

exports.inherits = function(Child, Parent) {
  Child.prototype = Object.create(Parent.prototype, { constructor: { value: Child }});
}

var isNode = (typeof global !== "undefined" && ({}).toString.call(global) == '[object global]');
var isBrowser = (typeof window !== "undefined" && ({}).toString.call(window) == '[object window]');

if (isNode) {
    exports.uid = function(length) {
        return (require("crypto")
            .randomBytes(length)
            .toString("base64")
            .slice(0, length)
        );
    };
} else if (isBrowser && window.crypto && window.crypto.getRandomValues) {
    exports.uid = function(length) {
        var values = new Uint8Array(length);
        window.crypto.getRandomValues(values);
        return btoa(String.fromCharCode.apply(null, values)).slice(0, 10);
    };
} else {
    exports.uid = function(length) {
        var arr = [];
        for (var i = 0; i < length; i++) {
            arr[i] = Math.floor(Math.random() * 255);
        }
        return btoa(String.fromCharCode.apply(null, values)).slice(0, 10);
    };
}

});