- From: Domenic Denicola <notifications@github.com>
- Date: Thu, 12 Mar 2020 12:29:54 -0700
- To: heycam/webidl <webidl@noreply.github.com>
- Cc: Subscribed <subscribed@noreply.github.com>
Received on Thursday, 12 March 2020 19:30:06 UTC
domenic commented on this pull request. > + +<div algorithm="observable array exotic object deleteProperty trap"> + The steps for the <code>deleteProperty</code> proxy trap for + [=observable array exotic objects=], given |O| and |P|, are as follows: + + 1. Let |handler| be the <emu-val>this</emu-val> value. + 1. If |P| is "length", then return <emu-val>false</emu-val>. + 1. If |P| [=is an array index=], then: + 1. Let |oldLen| be |handler|.\[[BackingList]]'s [=list/size=]. + 1. Let |index| be [=!=] [$ToUint32$](|P|). + 1. If |index| ≠ |oldLen| − 1, then return + <emu-val>false</emu-val>. + 1. Perform the algorithm steps given by |handler|.\[[DeleteAlgorithm]], given + |handler|.\[[BackingList]][|index|] and |index|. + 1. [=list/Remove=] the last item from |handler|.\[[BackingList]]. + 1. Perform [=!=] |O|.\[[DefineOwnProperty]]("length", PropertyDescriptor{\[[Value]]: |oldLen| − 1}). Agreed, this is leftover from the earlier approach. -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/heycam/webidl/pull/840#discussion_r391844443
Received on Thursday, 12 March 2020 19:30:06 UTC