RT @satanacchio: Node.js v23.6.0 is out! 🥳🎉 This release enables the flag --experimental-strip-types by default. Node.js will execute Type…

@ballingt In those cases, you kind of _want_ to have duplicated and unassignable TS types, because that accurately describes the situation. But for simple functions and values, things that aren't meant to be used nominally, there's no issue.

@ballingt But I mean, for some import that results in TS loading `a/dist/esm-types`, is the same import meaningful at runtime, e.g. will it load a value in Node.js? In other words, do any of the types describe the exports of a JS module, or is it purely a collection of types?

@ballingt So this is a package entrypoint that has no corresponding JS? (Or empty stubs for JS?)

@mitschabaude But Node doesn't do type stripping inside node_modules, so if you're writing a library, you're in this situation where you can run TS during development, but you need to publish JS files. That makes it impossible to satisfy our rule of "write the specifier that works at runtime."

@bradleymeck @devongovett This is possibly the thing I most wish people understood about TypeScript

@wooorm @robpalmer2 @remcohaszing @ssalbdivad @johnny_reilly Yeah. Put another way: compile .ts and/or .js files, publish .js and .d.ts files. If you’re skipping the compilation step, you’re authoring .js and .d.ts.

@johnny_reilly @mattpocockuk 🤩

Editing with @britto_gab's work on region-prioritized diagnostics has been so great: > in our testing on TypeScript’s own checker.ts, a full semantic diagnostics response took 3330ms. In contrast, the response for the first region-based diagnostics response took 143ms! 👏

@ballingt That’s so kind, hope you’re having a good summer too!

RT @johnny_reilly: Dual publishing ESM and CJS is hard. Getting the types incorrect in your package.json is disappointingly easy. If you wa…

@craciun_07 @mattpocockuk The output is indeed wrong, though it’s not always super meaningful to discuss tsc emit when errors are present. But the whole idea of `verbatimModuleSyntax` is that anything not marked with `type` gets preserved.

@meoyawn This seems totally believable; I would love to know the details and see perf numbers. I would be shocked if it was a significant difference but I could be wrong!

I personally tend to use type-only imports via auto-imports (with `verbatimModuleSyntax`) in new projects, but maybe I just like using stuff I made 😄Do what makes you happy, and go deeper into understanding how your tools work if you can. It might be more complex than you think.