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Beyond Promise<any>: Designing a Type-Safe Modal API

await modal.open(...) improves control flow. But if the result is any , the most important part of the contract is still unchecked. In the previous article , I described a modal interaction as an asynchronous operation: Input ↓ [ user interaction ] ↓ Result That naturally leads to an API like: const result = await modal . open ( renameReportModal , input ); That immediately raises the question that determines whether the abstracti...
AI Made Me Faster at Building—But It Also Gave Me More to Supervise
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AI Made Me Faster at Building—But It Also Gave Me More to Supervise

I did not set out to build Issue Flow as a product. I built it because I was frustrated... In September 2025, I was developing a large product while working a demanding full-time job. This is a product I was planning to build for a long tine, but never had the bandwidth. AI had opened up a new kind of possibility: I could make meaningful progress in the limited time I had outside work. With an IDE, a chat interface, and early coding agents, I started building piece by piece. But as develo...
Ask ten questions, read the text once: making a decision model 6.7x faster
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Ask ten questions, read the text once: making a decision model 6.7x faster

A lot of "AI" in production isn't generation at all. It's a pile of small decisions about a piece of text: which team should handle this ticket? how urgent is it? is the customer threatening to leave? is this e-mail phishing? Sending each of those to an LLM and parsing the answer is slow, expensive and occasionally creative in ways you didn't ask for. Laya is an open model for exactly this job: you send a state (a ticket, an e-mail, a JSON document) and typed questions — choice , score ...
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Marketplace API Key Identity and Scope — Credential Lifetime Management Explained

Short answer: treat an API key as a credential bound to one tenant identity, an explicit permission set, and a finite validity window. Store only a verifier, check revocation on every request, and write the resolved tenant and key identifiers into immutable usage events. That is the smallest design that keeps a marketplace request attributable when invoices depend on it. The deciding constraint is billing accuracy. A key that merely proves "someone knows this secret" is too vague. If two sell...
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Track AI Prompt Changes with a Run Manifest

An AI evaluation improves after a prompt edit. A week later, a teammate cannot reproduce the comparison. The prompt file is available, but the retrieved note changed, a model alias may point somewhere else, and nobody recorded the adapter revision. There is an answer on disk without enough context to explain its origin. Create a run manifest that identifies the actual request inputs, configuration, source snapshot, and evaluator revision. Then assign that manifest a stable digest. The diges...
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Function in javascript

In JavaScript, a function is a reusable block of code that performs a task. You define it once and can call it whenever you need it. 1. Basic function function greet () { console . log ( " Hello! " ); } greet (); Here, greet is the function name, and greet() calls the function. 2. Function with parameters Parameters let you pass information into a function: function greet ( name ) { console . log ( " Hello, " + n...
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Django OTP Verification: 4 Security Mistakes Most Tutorials Get Wrong

If you've ever built email/phone verification into a Django app, there's a good chance your OTP flow looks something like this: otp = random . randing ( 100000 , 999999 ) user . otp_code = otp user . save () It works in local testing. But it also quietly makes four mistakes that most Django OTP tutorials skip entirely, mistakes that only surface once real traffic, multiple servers, and actual attackers enter the picture. Mistake #1: Using ...
Hexagonal Architecture for Provider-Agnostic RAG Pipelines
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Hexagonal Architecture for Provider-Agnostic RAG Pipelines

Demo stack: LangChain, Llama.cpp, Mistral.ai, Qwen Embeddings, PostgreSQL, Telegraf, Prometheus on Docker. I recently came across Machine Learning Mastery's guide on Building a RAG Pipeline with llama.cpp and decided to try it myself. One thing quickly became apparent: some of the APIs and methods used in the example had already changed or become deprecated. That led me to a bigger question: How do you design a RAG system that can evolve as the underlying technologies change? ...
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Workflow Engine by Optimajet is now a family of four products

One workflow engine for every .NET scenario, as an embeddable library, an HTTP API or a standalone server, now in four products with a new website. Key takeaways The Workflow Engine Family by Optimajet is one .NET workflow engine in four products: Workflow Engine Free and Workflow Engine as an embeddable library, Workflow Engine NEO as an HTTP API, and Workflow Server as a standalone server. A scheme drawn in Workflow Designer or built in C# runs in all four. Workflow Engine NEO is...
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A free Next.js 16 SaaS dashboard starter with shadcn/ui and Tailwind CSS 4

I just released a free SaaS dashboard starter built with Next.js 16, React 19, TypeScript, Tailwind CSS 4 and shadcn/ui. It's MIT-licensed, frontend only, and meant to be a clean first screen for an admin panel or internal tool. Live demo: https://saas-dashboard-starter-chi.vercel.app/ Repo: https://github.com/studiogridpro/saas-dashboard-starter Disclosure: this is a free starter for a paid kit we sell. The starter works on its own and you don't need anything else to use it. ...
Why HTML/CSS Is Not Enough: Steps to Transition from HTML to React
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Why HTML/CSS Is Not Enough: Steps to Transition from HTML to React

If you started your journey as a web developer, chances are the very first concepts you heard about were HTML and CSS. Perhaps you have already mastered these two skills and started building websites. If you have, I have good news for you: yes, these two skills are genuinely enough to build a website. But they are not sufficient. It is possible to build any site using HTML and CSS, and the professional frameworks and libraries we will look at shortly are built on top of HTML and CSS foundatio...
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The Computer Explained

Hey dev.to 👋 I've just published a new series about how computers actually work, starting from the fundamentals. I wanted to go beyond programming languages and frameworks and revisit the concepts underneath everything we build as software engineers, from bits and binary representation to hardware, memory, CPUs, operating systems, and eventually the bigger picture. The goal is to understand computers from the ground up, one concept at a time. This is the first post in the series (1/9...