Hacker News with Generative AI: TypeScript

Show HN: Aberdeen – An elegant approach to reactive UIs (aberdeenjs.org)
Build blazing-fast, declarative UIs in pure TypeScript/JavaScript – no virtual DOM.
User Interfaces, JavaScript, TypeScript, Frontend Development, Reactive Programming
100 points by vanviegen 3 hours ago | 39 comments
Show HN: VoltAgent – Open-Source Observability-First TS AI Agent Framework (github.com/VoltAgent)
VoltAgent is an open source TypeScript framework for building and orchestrating AI agents.
Open Source, AI, TypeScript, Observability
31 points by omeraplak 5 days ago | 6 comments
Automatically add missing "async/await" keywords to your TypeScript code (github.com/stanNthe5)
This VScode extension automatically add missing 'async/await' keywords when you save a typescript file.
TypeScript, Programming, Developer Tools, Automation
7 points by theThree 6 days ago | 7 comments
Show HN: Moose – OSS framework to build analytical back ends with ClickHouse (fiveonefour.com)
Moose lets you develop analytical backends in pure TypeScript or Python code like this:
Open Source, Analytics, TypeScript, Python, Databases
76 points by okane 16 days ago | 15 comments
N-Params vs. Single Param (carlos-menezes.com)
When writing functions in TypeScript (and, truthfully, any language that does not support named parameters), you either pass arguments individually (n params) or group them into a single object.
TypeScript, Programming, Functions, Best Practices
37 points by carlos-menezes 22 days ago | 43 comments
Ts-Rest: TypeScript Contracts for REST APIs with Built-In Zod Validation (ts-rest.com)
A seriously tiny type-safe wrapper around existing, battle-tested, established techAn incrementally adoptable tool, for TS-first teams who care about stability + safetyNo opinionated API structure, should be compatible with your existing structures
TypeScript, REST APIs, Validation, Software, Web Development
18 points by cassepipe 25 days ago | 2 comments
Show HN: Zero-codegen, no-compile TypeScript type inference from Protobufs (github.com/nathanhleung)
Zero-codegen TypeScript type inference from protobuf messages.
TypeScript, Protobufs, Development, Programming, Open Source
138 points by 18nleung 25 days ago | 73 comments
Show HN: Gatehouse-TS – TypeScript port of Rust's authorization policy framework (github.com/9Morello)
Gatehouse-TS is a flexible, zero-dependencies authorization library written in TypeScript. It combines role-based (RBAC), attribute-based (ABAC), and relationship-based (ReBAC) access control policies. Port of the Gatehouse authorization library for Rust. The original authors did a fantastic job at creating an easy to use API, and were kind enough to let this library be named after Gatehouse.
TypeScript, Authorization, Security, Open Source, Rust
23 points by gr4vityWall 26 days ago | 0 comments
Zod v4 Beta (v4.zod.dev)
Zod 4 is now in beta after over a year of active development. It's faster, slimmer, more tsc-efficient, and implements some long-requested features.
Software, New Releases, Programming, TypeScript
177 points by mycroft_4221 27 days ago | 47 comments
ArkType: Ergonomic TS validator 100x faster than Zod (arktype.io)
📈 Announcing ArkType 2.1 📈Search⌘K
TypeScript, Validation, Performance, Software, New Releases
192 points by nathan_phoenix 27 days ago | 71 comments
Use the Gemini API with OpenAI Fallback in TypeScript (sometechblog.com)
If you want to use Gemini’s public API, but at the same time have a safe fallback in case you have exhausted the rate limits, you can use the OpenAI TS/JS library and a few helper functions. In my particular case I needed a type-safe solution for a chartmaker app with a fallback since Gemini’s gemini-2.5-pro-exp-03-25 model is restricted to 20 request/min.
TypeScript, API, OpenAI, Gemini, Rate Limiting
72 points by l5870uoo9y 35 days ago | 33 comments
In Defence of TypeScript Enums (yazanalaboudi.dev)
In the past few years, there’s been a growing trend of criticizing TypeScript’s enum feature.
TypeScript, Programming, Software Development, Enums
19 points by romellem 38 days ago | 5 comments
Show HN: TypeScript as a proof assistant for intuitionistic propositional logic (github.com)
TypeScript can be used just like a proof assistant (for intuitionistic propositional logic)!
TypeScript, Proof Assistants, Logic, Programming Languages, Computer Science
17 points by xxmarijnw 39 days ago | 3 comments
Typed Japanese (github.com/typedgrammar)
If you can write TypeScript, you can understand Japanese!
Programming Languages, TypeScript, Japan, Learning, Open Source
121 points by Philpax 41 days ago | 37 comments
TypeScript is Like C# – A Backend Guide (chrlschn.dev)
If you already know TypeScript, then learning C# is easy! This guide walks you through the similarities (and differences) between TypeScript and C#.
TypeScript, C#, Programming Languages, Software Development
13 points by CharlieDigital 48 days ago | 10 comments
Show HN: Minimal JavaScript/TS framework that made us 10k in 10 days (github.com/The-Pocket-World)
Enable LLMs to Program Themselves.
Open Source, Programming, JavaScript, TypeScript, Generative AI
10 points by hez2000 49 days ago | 2 comments
Show HN: AgentKit – JavaScript Alternative to OpenAI Agents SDK with Native MCP (github.com/inngest)
Build multi-agent networks in TypeScript with deterministic routing and rich tooling via MCP.
JavaScript, OpenAI, AI, Agents, TypeScript
64 points by tonyhb 50 days ago | 15 comments
Valibot v1 – The 1 kB schema library for TypeScript (valibot.dev)
I am excited to announce the release of Valibot v1. Valibot is a modular and fully tree-shakable schema library that helps you describe and validate your data with a type-safe and easy-to-remember API. As a 1 kB alternative to Zod, Valibot is perfect for validating forms and securing backend-frontend communication with a single source of truth.
TypeScript, Data Validation, JavaScript Libraries, Frontend Development, Backend Development
10 points by fabianhiller 51 days ago | 1 comments
TypeScript-go is now a performance benchmark for the Go compiler (googlesource.com)
TypeScript, Go, Programming Languages, Benchmarking, Performance
9 points by dimitropoulos 57 days ago | 0 comments
Choosing Languages (steveklabnik.com)
The other day, Microsoft announced that they are re-writing the TypeScript compiler in Go. A lot of people had a lot of feelings about this. I did too, but in a different way than many other people.
Programming, Languages, TypeScript, Go
16 points by steveklabnik 57 days ago | 1 comments
TypeScript is being ported to Go – interview with Anders Hejlsberg (youtube.com)
TypeScript, Go, Programming Languages, Interviews
27 points by TowerTall 58 days ago | 2 comments
Why Go? (github.com/microsoft)
Language choice is always a hot topic! We extensively evaluated many language options, both recently and in prior investigations. We also considered hybrid approaches where certain components could be written in a native language, while keeping core typechecking algorithms in JavaScript. We wrote multiple prototypes experimenting with different data representations in different languages, and did deep investigations into the approaches used by existing native TypeScript parsers like swc, oxc, and esbuild.
Programming Languages, TypeScript, Performance, JavaScript
130 points by mepian 59 days ago | 107 comments
A 10x Faster TypeScript (microsoft.com)
Today I’m excited to announce the next steps we’re taking to radically improve TypeScript performance.
TypeScript, Software Development, Performance
1827 points by DanRosenwasser 59 days ago | 908 comments
Bundling MCP Servers in Every OpenAPI –> TypeScript SDK (speakeasy.com)
It’s no longer enough for businesses to make their services available to developers. A great development experience also hinges on the ability for AI to access and integrate with available APIs. That’s why starting today, every TypeScript SDK generated by Speakeasy now bundles a runnable Model Context Protocol (MCP) (opens in a new tab) server enabling you to expose your API to the growing landscape of AI agents.
API, TypeScript, AI, Software, Open Source
16 points by disintegrator 60 days ago | 1 comments
How to Implement a Cosine Similarity Function in TypeScript (alexop.dev)
To understand how an AI can understand that the word “cat” is similar to “kitten,” you must realize cosine similarity. In short, with the help of embeddings, we can represent words as vectors in a high-dimensional space. If the word “cat” is represented as a vector [1, 0, 0], the word “kitten” would be represented as [1, 0, 1]. Now, we can use cosine similarity to measure the similarity between the two vectors.
Cosine Similarity, TypeScript, AI, Embeddings
86 points by alexop 61 days ago | 40 comments
Node just added TypeScript support (deno.com)
Node.js recently added native TypeScript support in version 22.6 (stabilized in 23.6), a welcome enhancement simplifying setups for TypeScript users. This has sparked questions within the community about how Node’s new capabilities compare with Deno’s existing TypeScript integration.
Node.js, TypeScript, JavaScript, Programming Languages, Web Development
6 points by samspenc 64 days ago | 1 comments
Show HN: Testeranto – the AI driven test framework for TypeScript projects (npmjs.com)
🚧 WARNING: Testeranto is still under development and is not ready for production yet. 🚧
TypeScript, Testing, AI, Software, Open Source
22 points by adamwong246 64 days ago | 0 comments
An ode to TypeScript enums (disintegrator.dev)
It’s official, folks. TypeScript 5.8 is out bringing with it the --erasableSyntaxOnly flag and the nail in the coffin for many of the near-primordial language features like Enums and Namespaces. Node.js v23 joined Deno and Bun in adding support for running TypeScript files withouth a build step. The one true limitation is that only files containing erasable TypeScript syntax are supported. Since Enums and Namespaces (ones holding values) violate that rule since they are transpiled to JavaScript objects.
TypeScript, JavaScript, Programming Languages, Software Development, Enums
57 points by disintegrator 68 days ago | 67 comments
Porting Doom to TypeScript Types Took 3.5T Lines, 90GB of RAM (tomshardware.com)
TypeScript, Programming, Gaming, Performance, Software
5 points by Alupis 71 days ago | 1 comments
MichiganTypeScript: A WebAssembly runtime implemented in TypeScript types (github.com/MichiganTypeScript)
This is a WebAssembly runtime implemented purely in TypeScript types.
WebAssembly, TypeScript, Runtime, Programming Languages
88 points by Philpax 72 days ago | 8 comments