ar>; else let <var>T</var> be <emu-val>undefined</emu-val>.</li><li>Let <var>entries</var> be the List that is <var>map</var>.<var class="field">[[MapData]]</var>.</li><li>For each Record { <var class="field">[[Key]]</var>, <var class="field">[[Value]]</var>&nbsp;} <var>e</var> that is an element of <var>entries</var>, in original key insertion order, do:<ol><li>If <var>e</var>.<var class="field">[[Key]]</var> is not <emu-const>empty</emu-const>, then<ol><li>Let <var>testResult</var> be ToBoolean(? Call(<va