t of evaluating <emu-nt id="_ref_44"><a href="#prod-MemberExpression">MemberExpression</a></emu-nt>.</li><li>Let <var>baseValue</var> be ?&nbsp;<emu-xref aoid="GetValue" id="_ref_13"><a href="https://tc39.es/ecma262/#sec-getvalue">GetValue</a></emu-xref>(<var>baseReference</var>).</li><li>Let <var>startExpression</var> be the first <emu-nt><a href="https://tc39.es/ecma262/#prod-AssignmentExpression">AssignmentExpression</a></emu-nt>.</li><li>Let <var>endExpression</var> be the second <emu-nt><a href="https: