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Anders Hejlsberg
256 posts
user avatar
Anders Hejlsberg
@ahejlsberg
Technical Fellow at Microsoft
Seattle
Joined September 2012
75
Following
49K
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  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Mar 11, 2025
    Thrilled to announce...
    A 10x Faster TypeScript - TypeScript
    From devblogs.microsoft.com
    1.5M
  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Nov 1, 2021
    25 years at Microsoft today. Can't believe it's been that long, but still having fun!
  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Oct 1, 2022
    Amazing it is 10 years today since @TSteveLuc, @lukehoban and I unveiled @typescript at @GOTOcon in Aarhus, Denmark. Would've never imagined our success, or still being at it 10 years later. What a fun ride! youtube.com/watch?v=3dqZW_… devblogs.microsoft.com/typescript/ten…
  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Jul 20, 2023
    Today we’re releasing TypeChat (microsoft.github.io/TypeChat/blog/…), an open source project that uses AI to bridge between natural language and application schema and APIs. It uses TypeScript in novel and interesting ways. Check it out and let us know what you think. @TypeScript
    300K
  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Mar 12, 2024
    The new —ultraStrict option where you must double check everything! Actually, no. It’s a bug. Fix has been merged.
    user avatar
    Haz
    @diegohaz
    Mar 7, 2024
    Just another day working with TypeScript.
    The following TypeScript code shows a type error when passing the value constant to the setState function:

if (value === undefined) return;
store.setState(key, value);
    The following TypeScript code doesn't show any type error:

if (value === undefined) return;
if (value === undefined) return;
store.setState(key, value);
    Fix nullability intersections in CFA and relations by ahejlsberg · Pull Request #57724 · microsof...
    From github.com
    120K
  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Jun 16, 2020
    Variadic tuple types are coming to TypeScript 4.0. @typescript #TypeScript
    Variadic tuple types by ahejlsberg · Pull Request #39094 · microsoft/TypeScript
    From github.com
  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Jul 30, 2018
    TypeScript 3.0! Some good stuff in this one!
    user avatar
    TypeScript
    @typescript
    Jul 30, 2018
    🎉 TypeScript 3.0 is here!!!! 🎉 Check out project references, extractable parameter lists, easier errors, and more! blogs.msdn.microsoft.com/typescript/201…
  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Jan 8, 2024
    Probably the most issues I've closed in a single PR. Happy we're finally able to improve this. @typescript
    Preserve type refinements in closures created past last assignment by ahejlsberg · Pull Request...
    From github.com
    72K
  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Nov 12, 2020
    Replying to @gvanrossum
    Welcome Guido. So looking forward to working with you.
  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Jan 20, 2018
    Conditional Types are coming to TypeScript (slated for the 2.8 release). #TypeScript @typescriptlang
    Conditional types by ahejlsberg · Pull Request #21316 · microsoft/TypeScript
    From github.com
  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Aug 31, 2020
    Been working on a fun new feature, Template String Types:
    github.com
    Template literal types and mapped type 'as' clauses by ahejlsberg · Pull Request #40336 · microso...
    This PR implements two new features: Template literal types, which are a form of string literals with embedded generic placeholders that can be substituted with actual string literals through type...
  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Jun 12, 2018
    Fun with functions! Strong typing of variadic higher order functions coming to TypeScript.
    Tuples in rest parameters and spread expressions by ahejlsberg · Pull Request #24897 · microsoft/...
    From github.com
  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Mar 4, 2019
    Really excited about this one...
    Higher order function type inference by ahejlsberg · Pull Request #30215 · microsoft/TypeScript
    From github.com
  • user avatar
    Anders Hejlsberg
    @ahejlsberg
    Nov 5, 2019
    Lots of good stuff in this one!
    user avatar
    TypeScript
    @typescript
    Nov 5, 2019
    TypeScript 3.7 is finally here! ✔ Optional Chaining & Coalescing ✔ Assertion Functions ✔ .d.ts Emit From .js Files ✔ Smarter Control Flow Analysis ✔ Flatter Error Messages and more! Check out the blog post today! devblogs.microsoft.com/typescript/ann…
    GIF

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