JSFiddle - React, Tailwind, and code Playground

HTML

<script>
"use strict";
Object.defineProperty(window, 'someFunction', {
    value: function() { alert('safe'); },
    writable: false,
    enumerable: false,
    configurable: false
});
</script>

<script>
"use strict";
function someFunction() { alert('boom!'); }
someFunction(); // boom!
</script>