Consider using Node's ES loader hooks

[dead-claudia]

(ref)

Basically, this would allow me to turn thallium and thallium/assert into "builtins" for ES modules, so I can guarantee every module receives the same instance. I could also support CoffeeScript ES modules and similar on the fly. (Basically, better interop.)

Also, this is required for ES modules as configs, and so should be done by default.

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This is way better than require.extensions hacking... (although to do similar for CJS, I'd have to overwrite some Module internals)