'modern' alternative to JS-Interpreter?

[TimNZ]

Turns out it's quite a challenge to google for this.

Are there (newer) alternatives to JS-Interpreter that offer the same support for async as sync and other features, and out of the box ES6+ keywords/statements e.g. let, const?
Without having to use Babel.

Not supporting ES6+ is not a show stopper, I'm just looking at replicating Google App Scripts language support.

Nothing listed here is an alternative:
https://en.wikipedia.org/wiki/List_of_ECMAScript_engines

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[brownstein]

I've actually had a pretty good experience using Babel to pre-process code and a source-map aware wrapper around this library to run and display it. Not perfect (babel generates a lot of code for async functions, which must be crunched by the interpreter), but it works.

See if there's anything you can borrow from https://github.com/brownstein/open-sourceror/tree/master/src/script-runner to meet your needs.

[TimNZ]

@brownstein thanks. Plenty to play with.