kriskowal/es5-shim — comment on commit 21c880db543b5d15fe01443a0d4bf1ec4dcf75dc
File:  line 0
By michaelficarra:

@tkissing: While you're right about the `POSITIVE_INFINITY` property, that's only useful if we can guarantee we have a reference to the original `Number` constructor, which *is* writeable...