👀 Using `Reflect.ownKeys` to see Class function names in `Math`, `Array`, `Set`, etc.

index.html

<table><tbody><tr id=o></tr></tbody></table>
<script>
o.innerHTML = [window, Set, Array, Math, Number, RegExp, Date]
.map(M=>`<td><h3>${M.name || M}</h3><br>${Reflect.ownKeys(M).map(a=>JSON.stringify(a)).join`<br>`}</td>`).join``;
</script>
<style>*{vertical-align:top}