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Imho standardizing the syntax is enough and this is what https://github.com/tc39/proposal-type-annotations does.
The type checker is immensely complex and should be left out so that other type checkers can be developed, e.g. similar to how it's for Python today.
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Namespaces are also not supported as per https://github.com/nodejs/node/blob/main/doc/api/typescript.....
I for one can can live without all these features and will be banning via eslint.
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There's a "dedicated thread" on the question here https://github.com/nodejs/loaders/issues/214
There are about 100 messages in the comments on the linked PR all about the import extensions compatibility/consequences :)
There's a "roadmap doc" here https://github.com/nodejs/loaders/issues/217 that states "No .js extension for .ts files."
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TypeScript in its current usage reminds me of Hello, World! or FizzBuzz Enterprise Edition. There's almost more code dedicated to typing than the actual running software itself in some codebases I've seen.
The authors trick you with reasonable examples on https://www.typescriptlang.org, but in the wild, you have these ridiculous codebases that couldn't control themselves and they have this insane ratio of multiple declaration files to actual source files and you have to ask yourself, "Are you writing software to get something actually done, or do you just like write type definitions?"
Even people who write in C++ don't go to the lengths that TypeScript users do. It's super weird and cult-like.
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rescript
ReScript is a robustly typed language that compiles to efficient and human-readable JavaScript.
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Google’s Closure Library is fascinating too. It’s being retired, but if you want to build a rich text interface for email authoring that truly feels like Gmail, warts and all, you can just use a pre-compiled version of the library and follow https://github.com/google/closure-library/blob/master/closur... within a more modern codebase!
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I don't use them directly much, but template literal generic and contidiontal types is probably the closest a mainstream language has inched towards dependent types.
Some examples of TypeScript power:
- SQL database in TypeScript types: https://github.com/codemix/ts-sql
- Statically typed raw SQL queries: https://github.com/andywer/squid?tab=readme-ov-file#tag-func...
- (Someone fill in your TS hackery for me)
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I don't use them directly much, but template literal generic and contidiontal types is probably the closest a mainstream language has inched towards dependent types.
Some examples of TypeScript power:
- SQL database in TypeScript types: https://github.com/codemix/ts-sql
- Statically typed raw SQL queries: https://github.com/andywer/squid?tab=readme-ov-file#tag-func...
- (Someone fill in your TS hackery for me)
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There are various programming language interpreters that run entirely in the type system:
- BF: https://github.com/susisu/typefuck
- Assembly: https://github.com/judehunter/ts-asm
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There are various programming language interpreters that run entirely in the type system:
- BF: https://github.com/susisu/typefuck
- Assembly: https://github.com/judehunter/ts-asm
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tsx has very slow startup performance, I prefer https://github.com/swc-project/swc-node which is around twice as fast.
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This can give you some hints of the current status of closure compiler:
https://github.com/google/closure-compiler/issues/2731
I happen to know this because we have some old projects that depend on this and are working hard to get rid of the dependency.
I wish Google either updates it or just mark the whole thing deprecated -- the world has already moved on anyway. Relating this to Google's recent cost cutting, and seeing some other Google's open source projects more or less getting abandoned, I have to say that today's Google is definitely not the same company from two decades ago.
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Maybe I just have bad luck, but most of the libraries I've tried that are "crazy to look at" seem good in theory but are janky in practice. For example, openapi-fetch (https://github.com/openapi-ts/openapi-typescript/tree/main/p...), on paper seems great, but has lots of jank in practice.
And I would wager the bugs and jank are in no small part due to the extremely complex generics/constraints.
