25 lines
622 B
JavaScript
25 lines
622 B
JavaScript
module.exports = ensnare
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// creates a proxy object that calls cb everytime the obj's properties/fns are accessed
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function ensnare (obj, cb) {
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var proxy = {}
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Object.keys(obj).forEach(function (key) {
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var val = obj[key]
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switch (typeof val) {
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case 'function':
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proxy[key] = function () {
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cb()
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val.apply(obj, arguments)
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}
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return
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default:
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Object.defineProperty(proxy, key, {
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get: function () { cb(); return obj[key] },
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set: function (val) { cb(); obj[key] = val; return val },
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})
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return
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}
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})
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return proxy
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}
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