《es6标准入门》chapter11中关于Proxy的一个错误例子的纠正

var pipe=(function(){
    var pipe;
    return function(value){
        pipe=[];
        return new Proxy({}, {
            get(target, fnName, receiver){
                console.log(‘enter get, fnName ‘ + fnName.toString())
                if(fnName == ‘get‘){
                    console.log(‘begin to calc the value‘);
                    return pipe.reduce(function(val, fn){
                        return fn(val);
                    }, value);
                }
                pipe.push(global[fnName]);
                console.log(pipe, pipe.length);
                console.log(target);
                //此处应该是要返回proxy对象，而不是原来的target对象
                return receiver;
            }
        });
    }
}());
//此处是为了兼容node环境而做的修改
global["double"] = n =>n*2;
global["pow"] = n =>n*n;
global["reverseInt"] = n=>n.toString().split(‘‘).reverse().join(‘‘) | 0;
console.log(pipe(3).double.pow.reverseInt.get)