flre VS TypeScript

In Pascal that is really common, since the files are the modules. You publish your library as one file, and the user can import it by the file name.

I ran wc on FreePascal to search for some. There are a few, but not as many as I expected.

9k file, data structures for the compiler itself: https://gitlab.com/freepascal.org/fpc/source/-/blob/main/./c...

30k file: Pascal parser/scope resolver: https://gitlab.com/freepascal.org/fpc/source/-/blob/main/pac...

And the record:

119k file, Sharepoint API (but it seems to be autogenerated): https://gitlab.com/freepascal.org/fpc/source/-/blob/main/pac...

As far as libraries go, this is one of my favorites:

23k file, regular expression library: https://github.com/BeRo1985/flre/blob/master/src/FLRE.pas

I searched my own files and found a 197k file to parse HTML entities. But that was an autogenerated trie (one switch/case for each letter)

While we were fighting against the modules, we forgot one small detail - their built-in typings. Esbuild can't do this at all yet. Unbelievable, but the tsc, native TS compiler, also does not provide a typings concat feature. Got around this problem: we've introduced [a utility to combine typings](tsc-dts-fix of zx own code, and applied some monkey patches for external libdefs squashed via dts-bundle-generator.

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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