Oops I just click reply instead of reply all. Sorry for that.
The point I am trying to make is that they still work, because legacy code
assumes {}.toString.call(String.prototype) returns [object String]. The only
possible incompatibility is the change of String.prototype, from itself a
String to an ordinary object.
P.S.
I am trying to submit this to buzilla, but due to unknown reason I cannot
access it.
Subject: Re: @@toStringTag spoofing for null and undefined
From: [email protected]
Date: Tue, 10 Feb 2015 19:51:59 +0100
CC: [email protected]
To: [email protected]
You misunderstood me: I wasn't referring to interaction between legacy and new
code, but to legacy code by itself, e.g. on an unmaintained site, that used to
work and would suddenly break (hint: "unknown object" was specifically
`String.prototype`). ―Claude
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