an> parse : <span><span><span class="type-var">'a</span> <a href="#type-t">t</a></span> <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-input">input</a> <span class="arrow">&#45;&gt;</span></span> <span><span><span>(<span class="type-var">'a</span>, string)</span> <span class="xref-unresolved">Stdlib</span>.result</span> <a href="#type-promise">promise</a></span></span></code></div></div><h3 id="monadic-operators"><a href="#monadic-operators" class="anchor"></a>Monadic operators</h3><div c