| 1 | ;
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| 2 | var nativePropertyIsEnumerable = {}.propertyIsEnumerable;
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| 3 | var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
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| 4 |
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| 5 | // Nashorn ~ JDK8 bug
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| 6 | var NASHORN_BUG = getOwnPropertyDescriptor && !nativePropertyIsEnumerable.call({ 1: 2 }, 1);
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| 7 |
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| 8 | // `Object.prototype.propertyIsEnumerable` method implementation
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| 9 | // https://tc39.github.io/ecma262/#sec-object.prototype.propertyisenumerable
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| 10 | exports.f = NASHORN_BUG ? function propertyIsEnumerable(V) {
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| 11 | var descriptor = getOwnPropertyDescriptor(this, V);
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| 12 | return !!descriptor && descriptor.enumerable;
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| 13 | } : nativePropertyIsEnumerable;
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