GoKawiil - Latest Tech News & Aggregated Headlines

Show HN: HMPL – Small Template Language for Rendering UI from Server to Client

news.ycombinator.com Unknown 2025-12-06 03:41:43

Server-oriented customizable templating for JavaScript Introduction hmpl is a small template language for displaying UI from server to client. It is based on customizable requests sent to the server via fetch and processed into ready-made HTML. The language is syntactically block-based and integrated with JSON5 and DOMPurify. Reduce the size of your javascript files and display the same UI as if it was written in a modern framework! ☆ If you find HMPL useful, please consider giving us a star

Topics: div hmpl js script server

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What's wrong with the JSON gem API?

news.ycombinator.com Byroot'S Blog 2025-12-10 04:46:38

As I mentioned at the start of my Optimizing Ruby’s JSON series of posts, performance isn’t why I candidated to be the new gem’s maintainer. The actual reason is that the gem has many APIs that I think aren’t very good, and some that are outright dangerous. As a gem user, it’s easy to be annoyed at deprecations and breaking changes. It’s noisy and creates extra work, so I entirely understand that people may suffer from deprecation fatigue. But while it occasionally happens to run into mostly c

Topics: api end json new obj

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TIL that You can spot base64 encoded JSON, certificates, and private keys

news.ycombinator.com Thibault Martin 2025-12-10 15:17:38

You can spot base64 encoded JSON, certificates, and private keys Last modified August 5, 2025 Last modified August 5, 2025 I was working on my homelab and examined a file that was supposed to contain encrypted content that I could safely commit on a Github repository. The file looked like this { "serial" : 13 , "lineage" : "24d431ee-3da9-4407-b649-b0d2c0ca2d67" , "meta" : { "key_provider.pbkdf2.password_key" : "eyJzYWx0IjoianpHUlpMVkFOZUZKcEpSeGo4UlhnNDhGZk9vQisrR0YvSG9ubTZzSUY5WT0iLCJpdGVyYX

Topics: base64 echo encoded json key

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SimpleW – Web Server Library .NET Core

news.ycombinator.com Unknown 2025-12-11 20:39:57

SimpleW Features Routing API REST (Controller/Method + automatic json serialization/deserialization) Json Web Token Websocket Server Sent Events Static Files OpenTelemetry Documentation To check out docs, visit stratdev3.github.io. Changelog Detailed changes for each release are documented in the CHANGELOG. Contribution Feel free to report issue. License This library is under the MIT License.

Topics: api changelog check json license

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How we made JSON.stringify more than twice as fast

news.ycombinator.com Unknown 2025-12-12 22:09:33

JSON.stringify is a core JavaScript function for serializing data. Its performance directly affects common operations across the web, from serializing data for a network request to saving data to localStorage . A faster JSON.stringify translates to quicker page interactions and more responsive applications. That’s why we’re excited to share that a recent engineering effort has made JSON.stringify in V8 more than twice as fast. This post breaks down the technical optimizations that made this impr

Topics: byte fast json path string

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Show HN: Sidequest.js – Background jobs for Node.js using your database

news.ycombinator.com Unknown 2025-12-13 05:39:49

Quick Start Guide This guide will help you quickly set up Sidequest.js in your Node.js application. To install Sidequest.js, check out Installation Guide. If you are strictly following this quick start, you should install the SQLite backend driver, which is the default backend for Sidequest.js. 2. Job Creation The first step is to create a Job class. This class will define the job's behavior and can be customized as needed. typescript // jobs/EmailJob.js import { Job } from "sidequest"

Topics: dashboard job jobs js sidequest

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Modern Node.js Patterns

news.ycombinator.com Unknown 2025-12-14 23:16:18

Node.js has undergone a remarkable transformation since its early days. If you’ve been writing Node.js for several years, you’ve likely witnessed this evolution firsthand—from the callback-heavy, CommonJS-dominated landscape to today’s clean, standards-based development experience. The changes aren’t just cosmetic; they represent a fundamental shift in how we approach server-side JavaScript development. Modern Node.js embraces web standards, reduces external dependencies, and provides a more in

Topics: const error js modern node

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JSON is not a YAML subset (2022)

news.ycombinator.com John Millikin 2025-12-15 10:06:09

JSON is not a YAML subset People on the internet believe that JSON is a subset of YAML, and that it's safe to parse JSON using a YAML parser: Following this advice will end badly because JSON is not a subset of YAML. It is easy to construct JSON documents that (1) fail to parse as YAML, or (2) parse to valid but semantically different YAML. The second case is more dangerous because it's difficult to detect. False has over "1.7e3" named fjords YAML (infamously) allows string scalars to be unqu

Topics: 1e2 json load parser yaml

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Show HN: Rewindtty – Record and replay terminal sessions as structured JSON

news.ycombinator.com Unknown 2025-12-13 12:28:36

A terminal session recorder and replayer written in C that allows you to capture and replay terminal sessions with precise timing. ⚠️ Disclaimer This is a hobby project created for fun and learning purposes. It's still in active development and may contain bugs or incomplete features. If you encounter any issues, please report them in the Issues section. Contributions are welcome and encouraged! Features Record terminal sessions : Capture all terminal input/output with accurate timing inform

Topics: file json replay session sessions

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From XML to JSON to CBOR

news.ycombinator.com Unknown 2025-12-23 05:31:12

In modern computing, data exchange is foundational to everything from web browsing to microservices and IoT devices. The ability for different systems to represent, share, and interpret structured information drives our digital world. Yet no single perfect format has emerged to meet all needs. Instead, we've seen an evolution of data interchange formats, each addressing the specific challenges and technical requirements of its time. This narrative traces three pivotal data formats: Extensible M

Topics: cbor data json web xml

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The many JavaScript runtimes of the last decade

news.ycombinator.com Unknown 2025-12-28 08:28:49

July 27, 2025 The many, many, many JavaScript runtimes of the last decade This last decade has seen an inundation of new JavaScript runtimes (and engines in equal measure), enabling us to run JavaScript in all manner of contexts with precise fitness for task. Through these, we've seen the language spread to the Cloud, the edge, Smart TVs, mobile devices, and even microcontrollers. In this article, we'll explore what's driving this diversity, and why no one runtime or engine suffices for all p

Topics: based javascript js native node

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The many, many, many JavaScript runtimes of the last decade

news.ycombinator.com Unknown 2025-12-28 14:28:49

July 27, 2025 The many, many, many JavaScript runtimes of the last decade This last decade has seen an inundation of new JavaScript runtimes (and engines in equal measure), enabling us to run JavaScript in all manner of contexts with precise fitness for task. Through these, we've seen the language spread to the Cloud, the edge, Smart TVs, mobile devices, and even microcontrollers. In this article, we'll explore what's driving this diversity, and why no one runtime or engine suffices for all p

Topics: based javascript js native node

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Simon Tatham's Portable Puzzle Collection

news.ycombinator.com Unknown 2025-12-28 05:46:44

Simon Tatham's Portable Puzzle Collection Introduction This page contains a collection of small computer programs which implement one-player puzzle games. All of them run natively on Unix (GTK) and on Windows. They can also be played on the web, as Java or Javascript applets. 2023-09-20: I'm sorry to say that I'm no longer going to be able to build the MacOS version of these puzzles. My Mac was very old and had been struggling for a while; it's now stopped working, and I don't intend to buy a

Topics: exe game java js manual

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npm 'accidentally' removes Stylus package, breaks builds and pipelines

bleepingcomputer.com Unknown 2026-01-05 05:21:25

npm has taken down all versions of the real Stylus library and replaced them with a "security holding" page, breaking pipelines and builds worldwide that rely on the package. A security placeholder webpage is typically displayed when malicious packages and libraries are removed by the admins of npmjs.com, the world's largest software registry primarily used for JavaScript and Node.js development. But that isn't quite the case for Stylus: a legitimate "revolutionary" library receiving 3 million

Topics: npm npmjs package packages stylus

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XSLT: A Precision Tool for the Future of Structured Transformation

news.ycombinator.com Unknown 2026-01-10 21:48:05

Vasu Chakkera gives a summary of some of the varied enterprise uses for XSLT Introduction While modern development trends lean toward JSON and microservices, XML continues to operate quietly but powerfully beneath the surface in enterprise domains like finance, healthcare, legal, education, and digital publishing. In these spaces, where precision, structure, and longevity are non-negotiable, XSLT (Extensible Stylesheet Language Transformations) remains one of the most capable — and often under

Topics: json streaming xml xsl xslt

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Running TypeScript Natively in Node.js

news.ycombinator.com Unknown 2026-01-14 15:41:22

Since v23.6.0, Node.js enables "type stripping" by default. If you are using v23.6.0 or later and your source code contains only erasable typescript syntax, you do not need this article. Since V22.6.0, Node.js has experimental support for some TypeScript syntax via "type stripping". You can write code that's valid TypeScript directly in Node.js without the need to transpile it first. The --experimental-strip-types flag tells Node.js to strip the type annotations from the TypeScript code before

Topics: experimental js node types typescript

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Run TypeScript code without worrying about configuration

news.ycombinator.com Unknown 2026-01-14 17:29:46

TypeScript Execute (tsx) tsx stands for TypeScript Execute and it's a Node.js enhancement to run TypeScript. For starters, think of tsx as an alias to node and use it the same way: sh node file.js →↓ sh tsx file.ts You can pass in Node CLI flags and JS files too: sh tsx --env-file=.env ./file.js Seamless TypeScript execution Run TypeScript code without worrying about configuration! tsx runs your TypeScript code with modern and sensible defaults, making it user-friendly and especially

Topics: esm js node tsx typescript

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Show HN: DataRamen, a Fast SQL Explorer with Automatic Joins and Data Navigation

news.ycombinator.com Unknown 2026-01-18 23:42:17

🔧 Install Node.js DataRamen runs locally using Node.js. If you don’t have it yet, download the latest version (v22 or above) from the NodeJS website.

Topics: dataramen don install js node

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Windows 11 now uses JScript9Legacy engine for improved security

bleepingcomputer.com Unknown 2026-01-26 23:46:27

Microsoft announced that it has replaced the default scripting engine JScript with the newer and more secure JScript9Legacy on Windows 11 version 24H2 and later. The decision is driven by security concerns, as JScript9Legacy is expected to offer better protection against web threats, such as cross-site scripting (XSS), and also improved performance. "To provide a more secure experience, beginning with Windows 11, version 24H2, JScript9Legacy is enabled by default to handle all scripting proces

Topics: engine jscript jscript9legacy microsoft windows

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Compression Dictionary Transport

news.ycombinator.com Unknown 2026-02-08 12:07:33

Algorithms like Brotli compression and Zstandard compression achieve even greater efficiency by allowing the use of dictionaries of commonly encountered strings, so you don't need any copies of them in the compressed resource. These algorithms ship with a predefined default dictionary that is used when compressing HTTP responses. Compression Dictionary Transport builds on this by enabling you to provide your own dictionary which is especially applicable to a particular set of resources. The com

Topics: compression dictionary js library v2

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Gmailtail – Command-line tool to monitor Gmail messages and output them as JSON

news.ycombinator.com Unknown 2026-02-12 14:06:16

A command-line tool to monitor Gmail messages and output them as JSON, designed for automation, monitoring, and integration with other tools. # Clone and setup the project # Install uv if you haven't already # Monitor all new emails # JSON Lines format (one JSON per line) # Resume from last checkpoint

Topics: automation designed json line monitor

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gmailtail: tail -f Your Gmail

news.ycombinator.com Unknown 2026-02-12 20:06:16

A command-line tool to monitor Gmail messages and output them as JSON, designed for automation, monitoring, and integration with other tools. # Clone and setup the project # Install uv if you haven't already # Monitor all new emails # JSON Lines format (one JSON per line) # Resume from last checkpoint

Topics: automation designed json line monitor

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Chatbot Flow Editor – Visual tool for designing conversation flows

news.ycombinator.com Unknown 2026-02-11 04:19:59

Chatbot Flow Editor Visual development tool for creating chatbot conversation flows A GUI tool that opens in your browser. Design, test, and export chatbot conversation flows as JSON. Quick Start # Install as development dependency npm install --save-dev @enumura/chatbot-flow-editor # Launch the visual editor npx @enumura/chatbot-flow-editor Your browser will automatically open with the visual flow editor at http://localhost:3001 . Installation & Usage Method 1: Using npx npm install --s

Topics: chatbot editor flow flows json

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1KB JavaScript Demoscene Challenge Just Launched

news.ycombinator.com Unknown 2026-02-16 14:36:40

I just launched JS1024 — a creative coding challenge with a strict limit: 1024 bytes of JavaScript. No libraries. No frameworks. Just raw code. You can submit visual effects, generative art, tiny games, synths, or whatever you can fit into 1KB of JavaScript. → https://js1024.fun/ Think of it as a spiritual successor to JS1k or the 4k demoscene — with a modern twist. Would love feedback, ideas, or help spreading the word. And if you’ve ever made a tiny JS demo, please share — I’d love to see

Topics: javascript js1024 just love tiny

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Parsing JSON in Forty Lines of Awk

news.ycombinator.com Mohamed Akram 2026-02-20 20:23:48

JSON is not a friendly format to the Unix shell — it’s hierarchical, and cannot be reasonably split on any character (other than the newline, which is not very useful) as that character might be included in a string. There are well-known tools such as jq that let you correctly parse JSON documents in the shell, but all require an additional dependency. Another option is to use Python, which is ubiquitous enough that it can be expected to be installed on virtually every machine, and for new proje

Topics: json key object substr type

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Show HN: To-Userscript: Chrome Extension to Userscript Converter

news.ycombinator.com Unknown 2026-03-06 09:25:45

Demo 2x Speed (conversion takes 4s total normal speed, incl. downloading) to-userscript.mp4 Demo but normal speed Screen.Shot.2025-06-20.at.7.59.06.AM.mov A powerful CLI for converting browser extensions into standalone userscripts. What is this? to-userscript bridges the gap between complex, packaged browser extensions and simple, portable userscripts. It takes an extension from the Chrome or Firefox store, a local directory, or a zip/xpi, and creates a single .user.js file that can be run i

Topics: chrome convert js script userscript

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Unexpected security footguns in Go's parsers

news.ycombinator.com Unknown 2026-03-02 21:35:12

In Go applications, parsing untrusted data creates a dangerous attack surface that’s routinely exploited in the wild. During our security assessments, we’ve repeatedly exploited unexpected behaviors in Go’s JSON, XML, and YAML parsers to bypass authentication, circumvent authorization controls, and exfiltrate sensitive data from production systems. These aren’t theoretical issues—they’ve led to documented vulnerabilities like CVE-2020-16250 (a Hashicorp Vault authentication bypass found by Goog

Topics: data field json parser xml

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Tuxracer.js play Tux Racer in the browser

news.ycombinator.com Unknown 2026-03-07 12:54:12

You can play Tux Racer directly in your browser here: Play TuxRacer.JS TuxRacer.js is a port / rewrite of Extreme Tux Racer, which itself is based on the original Tux Racer game. This project allows you to enjoy Tux Racer directly in your web browser, supporting all major desktop and mobile browsers. Note: This project is in an early development stage and far from complete. However, some courses are already functional enough to provide a fun experience (at least for me!). How to Run TuxRacer.

Topics: course environment js racer tux

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YouTube's new anti-adblock measures

news.ycombinator.com Unknown 2026-03-07 20:01:35

Over the past few months, YouTube has been trying another round of anti-adblock measures. Currently the anti-adblock stuff is being A/B tested, and one of my accounts is in the experimental group. I wrote a filter that partially avoids one of the anti-adblock measures, fake buffering, on uBlock Origin (and Brave browser, since it uses the same filter rules). (It’s already in the default filter lists, you don’t need to manually add the filter.) One thing that people have ran into is “fake buffer

Topics: ad gvs json video youtube

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Next.js 15.1 is unusable outside of Vercel

news.ycombinator.com Unknown 2026-03-22 17:20:23

If you use Next.js anywhere but Vercel, here's some bad news: Next.js 15.1+ is broken. tl;dr: Starting with version 15.1.8, Next.js might break metadata handling for non-Vercel deployments, potentially devastating your search rankings. This is not a bug. When Did This Happen? In 2024, Vercel introduced metadata streaming as an experimental feature. This fundamentally changes how Next.js handles metadata. Traditional approach: Metadata tags (title, description, Open Graph tags) are rendered d

Topics: js metadata server streaming vercel

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Latest Tech News

Show HN: HMPL – Small Template Language for Rendering UI from Server to Client

What's wrong with the JSON gem API?

TIL that You can spot base64 encoded JSON, certificates, and private keys

SimpleW – Web Server Library .NET Core

How we made JSON.stringify more than twice as fast

Show HN: Sidequest.js – Background jobs for Node.js using your database

Modern Node.js Patterns

JSON is not a YAML subset (2022)

Show HN: Rewindtty – Record and replay terminal sessions as structured JSON

From XML to JSON to CBOR

The many JavaScript runtimes of the last decade

The many, many, many JavaScript runtimes of the last decade

Simon Tatham's Portable Puzzle Collection

npm 'accidentally' removes Stylus package, breaks builds and pipelines

XSLT: A Precision Tool for the Future of Structured Transformation

Running TypeScript Natively in Node.js

Run TypeScript code without worrying about configuration

Show HN: DataRamen, a Fast SQL Explorer with Automatic Joins and Data Navigation

Windows 11 now uses JScript9Legacy engine for improved security

Compression Dictionary Transport

Gmailtail – Command-line tool to monitor Gmail messages and output them as JSON

gmailtail: tail -f Your Gmail

Chatbot Flow Editor – Visual tool for designing conversation flows

1KB JavaScript Demoscene Challenge Just Launched

Parsing JSON in Forty Lines of Awk

Show HN: To-Userscript: Chrome Extension to Userscript Converter

Unexpected security footguns in Go's parsers

Tuxracer.js play Tux Racer in the browser

YouTube's new anti-adblock measures

Next.js 15.1 is unusable outside of Vercel

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