tsup VS TypeScript

Now, we can run all this server reaching the port 4000. If you want to test, build it with tsup or any other way that you want, like ts-node.

If you're building hooks, providers & components you can go with only React + TypeScript, and use something ESBuild or tsup to build it.

I am using `tsup` to transpile my application - https://github.com/egoist/tsup

I spent way to much time over the last couple days trying to line up vite/rollup to bundle my component library with types, type maps and the correct formats. Until I ran across this blog post which introduced me to https://github.com/egoist/tsup and it all just worked in a single readable command. I figured I'd share with you beautiful people so you could get your code bundled faster and carry on with the fun part of programming.

As we iterate on the definition, we are going to want a better developer experience for rebuilding the package on changes. Typically, for a “library” or “utility” style package, I’d reach for either unbuild’s stub concept or use esbuild/tsup/rollup to implement a more traditional watch/rebuild, but in this case, I’m watching a proto file that lives outsides of the source, which breaks assumptions of those tools.

My most recent project uses tsup to package a CJS and a ESM version separately, and I just publish both. It's too early to go full ESM, but I also don't want to stay on CJS, granted that we've been slowly moving away from it. To me as a dev it makes no difference, but if you want to use one or the other as a library consumer, you have a choice in my package

If you want to stay in that ecosystem, try tsup. But you should still try to wire up a canonical tsc-based project first to understand the fundamentals.

Have a look at tsup (https://tsup.egoist.dev) and microbundle (https://www.npmjs.com/package/microbundle)...

I actually recommend using tsup to build instead of tsc. It can bundle if you want, makes it easier to output multiple formats if you want, etc. It's also dead simple and lightning fast (like, MUCH faster than tasc). It's zero config so the build script is as simple as this.

Regular expressions are part of the language, so it's not so unreasonable that TypeScript should parse them and take their semantics into account. Indeed, TypeScript 5.5 will include [new support for syntax checking of regular expressions](https://github.com/microsoft/TypeScript/pull/55600), and presumably they'll eventually be able to solve the problem the GP highlighted on top of those foundations.

Dedicated syntax for creating unique subsets of a type that denote a particular refinement is a longstanding ask[2] - and very useful, we've experimented with implementations.[3]

I don't think it has any relation to runtime type checking at all. It's refinement types, [4] or newtypes[5] depending on the details and how you shape it.

[1] https://github.com/microsoft/TypeScript/blob/main/src/compil...

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