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@Drag13
Created September 20, 2018 16:33
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function spyFactory(array) {
const interceptor = {
get: function (obj, prop) {
if (prop !== 'push') { return obj[prop]; }
return function(...args) {
console.log('prepush');
Array.prototype.push.apply(this, args);
console.log('postpush');
}
}
}
return new Proxy(array, interceptor);
}
const spyedArray = spyFactory([77, 5]);
console.log(spyedArray[0]);
spyedArray.push('4');
console.log(spyedArray[2]);
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