n class="Identifier">doAssert</span> <span class="FloatNumber">3.</span><span class="Identifier">toJs</span> <span class="Keyword">in</span> <span class="Identifier">d</span>
  <span class="Identifier">doAssert</span> <span class="StringLit">&quot;3&quot;</span><span class="Operator">.</span><span class="Identifier">cstring</span><span class="Operator">.</span><span class="Identifier">toJs</span> <span class="Keyword">notin</span> <span class="Identifier">d</span>
  <span class="Identifier">doAssert</span> 