Re: [heycam/webidl] Only install @@toStringTag on the prototype (#357) from Alexey Shvayka on 2020-04-22 (public-webapps-github@w3.org from April 2020)

From: Alexey Shvayka <notifications@github.com>
Date: Wed, 22 Apr 2020 03:35:34 -0700
To: heycam/webidl <webidl@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <heycam/webidl/pull/357/c617696014@github.com>

> They appear to use infrastructure similar to ES5's [[Class]], which was replaced with toStringTag in ES2015.

To my best judgement, this infrastructure in WebKit is quite error-prone since it requires new interfaces to opt-out of `[[Class]]` rather than a handful of pre-ES6 era objects opting-in. It also blocks making `Object.prototype.toString` spec-perfect with Proxies in a clean way.

My attempt to fix these issues (http://webkit.org/b/199138) implements this PR. I am very optimistic on getting its `Symbol.toStringTag` part landed as soon as we have the spec and WPT.

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Received on Wednesday, 22 April 2020 10:35:47 UTC