[async-node]: support for require flag?

So then we can just async-node -x .mjs,.js,.jsx -r @std/esm foo.mjs

[jdalton]

@leebyron

The @std/esm loader now works with @babel/register, nyc, and other tools that transform source.

Have you seen pirates? It’s what @babel/register uses to register its hooks. If you use that it would work seamlessly with things like @std/esm esp if you allowed the -r flagged code to run before your hook.

[leebyron]

I believe @std/esm attempts to transform sources live, so I would recommend first transforming your source files with async-to-gen to replace async/await statements, then used the output of that alongside @std/esm. Otherwise, the intermediate state of a half-transformed file will not behave as expected.