While fun, I do hope this is a joke, since as other comments have said, it’s fairly straight-forward to make a DSL for the given problems that this could solve.

While fun, I do hope this is a joke, since as other comments have said, it’s fairly straight-forward to make a DSL for the given problems that this could solve. Beyond that, this would never be safe from syntax mutations in new versions of ECMAScript and sadly would cause issues similar to the recent smoosh controversy (where a common library implemented `flatten` in a way that was incompatible with the new ES specification).