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Proxying property lookup

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To influence property lookup, the get handler must be used.

In this example, we modify property lookup so that not only the value, but also the type of that value is returned. We use Reflect to ease this. 

let handler = {
    get(target, property) {
        if (!Reflect.has(target, property)) {
            return {
                value: undefined,
                type: 'undefined'
            };
        }
        let value = Reflect.get(target, property);
        return {
            value: value,
            type: typeof value
        };
    }
};

let proxied = new Proxy({foo: 'bar'}, handler);
console.log(proxied.foo); // logs `Object {value: "bar", type: "string"}`
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Proxy:
* Proxy
* Very simple proxy using the set trap
* Proxying property lookup
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0 Getting started
1 Comments
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88 postMessage and MessageEvent
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97 How to make iterator usable inside async callback function
98 Context this
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100 Vibration API
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102 Tilde
103 Security issues
104 Get and set CSS custom variables
105 Contributors