microsoft/TypeScript on Hacker News

…is a superset[1] of javascript, so typescript-only syntactic sugar is entirely to be expected. [1]: https://github.com/microsoft/TypeScript (repo description)

comment by maronato · 2022-01-20 · in TypeScript Features to Avoid

A discussion on checked exceptions in TypeScript: https://github.com/microsoft/TypeScript/issues/13219

comment by WolfOliver · 2022-01-13 · in Does any other language than Java has the throws keyword to declare exceptions?

…is U): U[]; Additionally, getting TS better at inferring type guards is an open issue (literally): https://github.com/microsoft/TypeScript/issues/38390

comment by amitport · 2022-01-06 · in Flatten Arrays in Vanilla JavaScript with Flat() and FlatMap()

…but the ergonomics of `flatMap` type-wise are so much nicer! Just some interesting trivia. [0]: https://github.com/microsoft/TypeScript/issues/16069#issueco...

comment by jasonkillian · 2022-01-05 · in Flatten Arrays in Vanilla JavaScript with Flat() and FlatMap()

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

comment by ameliaquining · 2022-01-01 · in Do we need a link step?

Unfortunately the typescript definitions for these two methods haven't been written yet [1]. [1] https://github.com/microsoft/TypeScript/issues/47171

comment by ksbrooksjr · 2021-12-29 · in Using GroupBy on an array of objects in JavaScript

> but it's not true of generics in most languages not sure how true that is. * TypeScript: https://github.com/microsoft/TypeScript/issues/14833 * Rust: https://sdleffler.github.io/RustTypeSystemTuringComplete/ * Haskell (GHC):…

comment by wk_end · 2021-12-27 · in A Review of the Zig Programming Language (Using Advent of Code 2021)

…holder on this fork, but left the MIT license in place. How does this harm anyone? Here you go: https://github.com/microsoft/TypeScript Just fork TypeScript, change the copyright holder to yourself, and do what you want with it. I sure…

comment by thesuperbigfrog · 2021-12-25 · in Microsoft forked MIT licensed repo and changed the copyright [fixed]

…JS++ cannot read TypeScript, it's a completely new/different language. [0] https://github.com/microsoft/TypeScript/issues/29651

comment by eatonphil · 2021-12-21 · in Speedy Web Compiler – a fast TypeScript/JavaScript compiler

…and then you get both a TS type AND a JS parser/validator (which works as a TS typeguard). [1] https://github.com/microsoft/TypeScript/wiki/TypeScript-Desi... [2] https://github.com/colinhacks/zod

comment by kipple · 2021-12-13 · in Deno Joins TC39

…sure there's room to complain, unless you disagree with the direction they're taking the project: https://github.com/microsoft/TypeScript/blob/main/LICENSE.tx...

comment by TimTheTinker · 2021-12-13 · in Deno Joins TC39

…fan of TS, however, it's not likely ever going to be the thing that it's really close to being. [1] https://github.com/Microsoft/TypeScript/wiki/TypeScript-Desi...

comment by jollybean · 2021-12-13 · in Deno Joins TC39

…about it!). Looks like it's on the community's radar at least, so hopefully they fix it some day: https://github.com/Microsoft/TypeScript/issues/13347 Arrays are treated correctly though, at least: https://www.typescriptlang.org/play?#code/…

comment by brundolf · 2021-11-25 · in How JavaScript engines achieve great performance

…if my code is ANY more robust than if I had written it in JavaScript. Record<> is broken/unsound: https://github.com/microsoft/TypeScript/issues/45335 Generics are wonky and sometimes wrong: https://github.com/microsoft/TypeScript/issues/31…

comment by ragnese · 2021-11-24 · in How JavaScript engines achieve great performance

…structure with all the corresponding drawbacks. [0] https://stackoverflow.com/q/56034226/247441 [1] https://github.com/microsoft/TypeScript/issues/26223

comment by strogonoff · 2021-11-17 · in The perfect configuration format? Try TypeScript

Yep, that is exactly what it is, just a simple GH webhook to azure develops / GitHub Actions trigger. https://github.com/microsoft/TypeScript/issues/46177#issueco...

comment by orta · 2021-11-04 · in TypeScript: Control flow analysis for destructured discriminated unions

The PR is the article submitted in this thread, https://github.com/microsoft/TypeScript/pull/46266

comment by nextaccountic · 2021-11-04 · in TypeScript: Control flow analysis for destructured discriminated unions

…2, // typo } x(y) The above is caught in Flow when exact types are enabled but not in TS. TS issue https://github.com/microsoft/TypeScript/issues/12936 TS has a concept of "freshness" which catches some of these mistakes when you construct…

comment by inbx0 · 2021-11-03 · in TypeScript: Control flow analysis for destructured discriminated unions

Also: https://github.com/microsoft/TypeScript/pull/46429 . Anders is on a roll!

comment by sizediterable · 2021-11-03 · in TypeScript: Control flow analysis for destructured discriminated unions

…this pull request, you can do the above. This can be convenient with patterns like reducers (see https://github.com/microsoft/TypeScript/issues/46143 for an example).

comment by arxanas · 2021-11-03 · in TypeScript: Control flow analysis for destructured discriminated unions

…in Minor updates [1]) [0]: https://devblogs.microsoft.com/typescript/announcing-typescr... [1]: https://github.com/microsoft/TypeScript/issues/14116#issueco...

comment by j1elo · 2021-10-13 · in Tricks I wish I knew when I learned TypeScript

…its history in [2]. [0] https://github.com/arcanis/typanion [1] https://github.com/jquense/yup [2] https://github.com/microsoft/TypeScript/issues/3628

comment by Etheryte · 2021-10-12 · in Tricks I wish I knew when I learned TypeScript

…, and ponder applications to just-slightly-too-powerful type theories. Or https://github.com/Microsoft/TypeScript/issues/14833 .

comment by jerf · 2021-10-01 · in Where do type systems come from? (2017)

…because it splits the TS community to those who write Deno and those who write regular TS. [1]: https://github.com/microsoft/TypeScript/issues/27481

comment by Ciantic · 2021-09-01 · in Deno Deploy Beta 2

…so it's consistent with not affecting code generation. (More Turing completeness discussion at https://github.com/Microsoft/TypeScript/issues/14833 ) Then there are other features that have no equivalent in JS. For example enums. And the…

comment by fulafel · 2021-08-24 · in Deno on MDN

…but currently only via the tooling. It integrates with TS as a language service plugin ( https://github.com/Microsoft/TypeScript/wiki/Writing-a-Langu... ) so you get great warnings/errors, type inference and much more. To define standalone…

comment by somebee · 2021-08-17 · in Show HN: Imba – I have spent 7 years creating a programming language for the web

…etc. can. They are upfront about this though and it's stated here in the design goals as a non-goal https://github.com/Microsoft/TypeScript/wiki/TypeScript-Desi...

comment by jamil7 · 2021-08-04 · in Are dynamic languages going to replace static languages? (2003)

…for typescript or also implementing a second protocol that is sort of but not quite LSP. See https://github.com/microsoft/TypeScript/issues/39459

comment by thayne · 2021-07-19 · in Diffsitter: A tree-sitter based AST difftool to get meaningful semantic diffs

…), Haskell, Rust ( https://sdleffler.github.io/RustTypeSystemTuringComplete/ ), Typescript ( https://github.com/Microsoft/TypeScript/issues/14833 ) ... Having a type system with generics and not being turing-complete as a result is the…

comment by jcelerier · 2021-07-08 · in Compiling Rust is NP-hard

…wraps tsserver, but there is hope that microsoft could implement lsp protocol directly for tsserver https://github.com/microsoft/TypeScript/issues/39459#issueco... at which point the experience should be more comparable to coc.nvim. On a…

comment by mjlbach · 2021-07-03 · in Neovim v0.5

…of resolution, because the proposed fix (from a member of the TS team) has terrible performance: https://github.com/microsoft/TypeScript/issues/21699 But since React is a such a minor part of the JS/TS landscape, who can really blame the…

comment by stupidcar · 2021-06-28 · in Four approaches to implicit state in compound components, ranked

…no more, and "inexact" types where such subtyping is allowed. TypeScript doesn't have this check ( https://github.com/Microsoft/TypeScript/issues/12936 ) and I've found it can be really error prone when you're wanting to return a copy of…

comment by seanwilson · 2021-06-26 · in Parse, Don't Validate (2019)

Just adding a link for myself: https://github.com/Microsoft/TypeScript

comment by jcuenod · 2021-06-10 · in Ask HN: What's a good TS codebase to learn from?

…This might be working well for M1, which has 4 high performance cores and 4 efficiency cores. [1]: https://github.com/microsoft/TypeScript/issues/30235

comment by jeswin · 2021-05-17 · in How M1 Macs feel faster than Intel models: it’s about QoS

…that requires your input be below some threshold eg: `type Limit = 0..100;` See discussion here: https://github.com/Microsoft/TypeScript/issues/15480

comment by mbildner · 2021-05-15 · in Parsix: Parse Don't Validate

…experiments started popping up last year. This issue thread on the TS repo may be of interest: https://github.com/microsoft/TypeScript/issues/33014

comment by RobertKerans · 2021-05-14 · in Scala 3.0

This was kinda explored at the start of April this year: https://github.com/microsoft/TypeScript/pull/43480

comment by orta · 2021-05-07 · in JavaScript for Shell Scripting

Do you know if that somehow fixes https://github.com/microsoft/TypeScript/issues/8677 ? That's still the most annoying thing about typescript for me.

comment by razze · 2021-04-20 · in Why we chose Elm for Humio’s web UI

> Valid JavaScript is also valid Typescript. Unfortunately, no: https://github.com/microsoft/TypeScript/issues/1863

comment by Tade0 · 2021-03-10 · in Why Become a TypeScript Fan?

…[1] https://v8.dev/blog [2] https://benchmarksgame-team.pages.debian.net/benchmarksgame/... [3] https://github.com/microsoft/TypeScript/pull/43035#issuecomm...

comment by Chyzwar · 2021-03-05 · in It Can Happen to You

…and then it wouldn't lie to you, but that would probably break a lot of people's code. EDIT: https://github.com/microsoft/TypeScript/issues/26188

comment by presentation · 2021-03-03 · in How an Anti-TypeScript “JavaScript developer” like me became a TypeScript fan

Not doing runtime checks is a deliberate decision: https://github.com/Microsoft/TypeScript/wiki/TypeScript-Desi... So Zod it is. I like it.

comment by gherkinnn · 2021-03-02 · in How an Anti-TypeScript “JavaScript developer” like me became a TypeScript fan

…(I still think this is actually due to bug in TypeScript, see https://github.com/microsoft/TypeScript/issues/31990 .)

comment by evmar · 2021-03-02 · in How an Anti-TypeScript “JavaScript developer” like me became a TypeScript fan

…protect us from our own code, but not external definitions/libraries. Relevant GitHub issue here — https://github.com/microsoft/TypeScript/issues/26188

comment by kipple · 2021-03-02 · in How an Anti-TypeScript “JavaScript developer” like me became a TypeScript fan

Nominal types are on Typescript's roadmap: https://github.com/Microsoft/TypeScript/wiki/Roadmap Side note: An Introduction to Nominal TypeScript: What are nominal types and why should I use them? : https://medium.com/better-programming/nomi…

comment by eevilspock · 2021-02-17 · in Typing Is Hard

This is being looked at https://github.com/microsoft/TypeScript/issues/31658

comment by jayflux · 2021-02-10 · in Using ES Modules in Node.js: A Practical Guide (Part 1)

…"pedantic" option for index access [1]) option that would check against that potential errors. [1] https://github.com/microsoft/TypeScript/pull/39560

comment by mpawelski · 2021-02-06 · in Don't use functions as callbacks unless they're designed for it

According to https://github.com/microsoft/TypeScript/wiki/Performance#pre... using union types in your example vs interfaces like #6 is bad for compilation performance.

comment by bengalister · 2021-02-02 · in Bad TypeScript Habits

I hope Typescript will support Export Maps soon: https://github.com/microsoft/TypeScript/issues/33079

comment by wildpeaks · 2021-01-13 · in Get Ready for ESM

…it is open-source.[0] It's sort of funny this pylance thing seems to suffer the same problem. [0]: https://github.com/microsoft/TypeScript/issues/39459

comment by prussian · 2021-01-10 · in Microsoft Refuses to Open Source VSCode Python Language Server