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Add definition for "weak map" #1713

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whimboo merged 1 commit into from
Mar 7, 2024
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Add definition for "weak map" #1713

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14 changes: 11 additions & 3 deletions index.html
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Expand Up @@ -4065,15 +4065,23 @@ <h2>Elements</h2>
representing a handle to a DOM node in a specific
WebDriver <a>session</a>.

<p>A <dfn>weak map</dfn> is a [=infra/map=] in which keys are held weakly
i.e. items are removed if the key object is garbaged collected, and presence
in the map does not prevent garbage collection. This acts as an alternative
to defining properties directly on the key objects.

<p class=note>Unlike the ECMAScript [=WeakMap=] type, a <a>weak map</a> can
participate in the full set of operations available for a <a>Map</a>.

<p>A WebDriver <a>session</a> has a <dfn>browsing context group node
map</dfn>, which is a weak map between a <a>browsing context group</a>
map</dfn>, which is a <a>weak map</a> between a <a>browsing context group</a>
and a <a>node id map</a>.

<p>A <dfn>node id map</dfn> is weak map between nodes and their
<p>A <dfn>node id map</dfn> is <a>weak map</a> between nodes and their
corresponding <a>WebDriver node id</a>.

<p>A WebDriver <a>session</a> has a <dfn>navigable seen nodes map</dfn>
which is a weak map between a [=navigable=] and a set.
which is a <a>weak map</a> between a [=navigable=] and a set.

<p>To <dfn>get a node</dfn> given <var>session</var>,
<var>browsing context</var>, and <var>reference</var>:
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