How to Deep Merge JSON Files Safely in the Browser (100% Client-Side)
We've all been there: It's Friday at 4:55 PM. You just need to merge two simple .json config files for deployment. "This will take 30 seconds," you…
Latest News
⚑ Report a ProblemTech news from the best sources
All topics
AI
Gear
News
Tech
agents
ai
api
architecture
automation
beginners
career
database
devchallenge
devops
discuss
javascript
llm
machinelearning
mcp
opensource
performance
productivity
programming
python
security
showdev
testing
tutorial
typescript
webdev
Defensive Rollback Gates for Malformed Metrics Query JSON Responses
Rollback safety changes the design: an alert worker must treat a malformed or partial metrics query response as unknown, never healthy . For a gamin…
HealthKit to JSONL vs JSON: one snapshot survives a cut sync, the other gives you nothing
Two apps can write the exact same Apple Health records to disk and behave nothing alike the moment a sync gets interrupted. I benchmarked it on 2026…
How to Debug JSON Errors Fast: A Practical Guide
JSON errors are among the most common (and annoying) issues developers face. A missing comma, an extra quote, or a trailing comma can break an entir…
Why search-and-replace is the wrong way to fix a trailing comma in JSON
A single comma can make a whole JSON file unusable: { "name" : "ada" , "roles" : [ "admin" , "ops" ,], } # Python json.decoder.JSONDecodeError: Expe…
How to Validate and Format JSON in JavaScript (and a Free Tool That Does It Instantly)
Working with JSON in JavaScript means dealing with one constant problem: is this string actually valid JSON, and how do I make it readable? Whether…
What happens when you paste JSON into an online formatter
In November 2025, researchers at watchTowr Labs published findings about two popular online formatters — JSONFormatter and CodeBeautify. According t…
How to Compare Two JSON Files (Semantic Diff vs Text Diff)
Comparing two JSON documents with an ordinary text diff often produces a wall of red and green for changes that don't matter. Reordered keys, differ…
How to Convert JSON to TypeScript Interfaces (and Why Types Aren't Enough)
When you consume an API in TypeScript, writing the types by hand from a JSON response is tedious and error-prone. A generator can turn a sample resp…
JSON Schema for Beginners: Validate Your Data with a Few Keywords
JSON Schema is a standard way to describe what valid JSON looks like: which fields exist, what type each one is, and what values are allowed. Once y…
Do We Really Need Reflection or Code Generation for JSON in Kotlin? Building a Lightweight JSON Library
Building a lightweight Kotlin/JVM JSON library with a direct JSON representation and optional reflection-based mapping between JSON and Kotlin class…
JSON in Production: 7 Subtle Bugs That Break Web APIs and How to Debug Them
JSON in Production: 7 Subtle Bugs That Break Web APIs and How to Debug Them JSON (JavaScript Object Notation, RFC 8259) is the undisputed lingua fra…
How to Convert JSON to CSV (Nested Data, Arrays, and Excel Gotchas)
JSON is great for nested data; spreadsheets want flat rows and columns. Converting between them is easy when your JSON is a list of similar objects,…
JSON vs YAML: When to Use Which
JSON and YAML can describe the same data, so the choice comes down to who (or what) reads and writes the file. JSON is strict, small, and easy for s…
How to Fix "Unexpected Token" and Other Invalid JSON Errors
Errors such as "Unexpected token } in JSON at position 42" or "Expected property name or '}'" almost always come from a small syntax slip. JSON is s…
The model obeys your schema, not your description
Two models. Same prompt, same tool description, same request. One of them returned this: { "kind" : "entity" , "entityName" : "todo" , "definition"…
Why JSON Array Diffing Is Harder Than It Looks
Change one field in a JSON object, then reorder the surrounding array. A diff can suddenly report that nearly every record changed. Many JSON diff t…
Advanced JSON Path Operations in WebForms Core 2.1
At Elanat , we have enhanced the standard JSON CRUD operations in our WebForms Core technology with powerful new features in WebForms Core 2.1, incl…
A Practical JSON Minification Workflow for Web Developers
Introduction JSON is one of those formats developers work with every day without thinking much about it. We use it for API responses, configuration…
Valid JSON, Wrong Shape: Structured Output Across Three AI Backends
On March 3rd, 2026, a planning step in our content pipeline asked the model for a list of entities and got back exactly what it asked for. That was…
I Put `minimum` in My JSON Schema. ShapeCraft Ignored It. That Was By Design
I was extracting customer details from onboarding messages. The result needed a name, an age, and a country code before it could be passed to the ac…
Decode and encode JSON in Haskell like an Elm developer
If you're an Elm developer writing Haskell and you like elm/json , you might like dwayne/hs-json-codec . hs-json-codec provides JSON decoders and en…
JSON to String Conversion: The Edge Cases That Actually Bite in Production
Every JS developer writes JSON.stringify(data) a hundred times before they ever stop to think about what it's actually doing under the hood. It's on…
JSONPath Cheat Sheet: Syntax, Examples & Common Mistakes
JSONPath looks simple until you actually need a filter, a slice, or a recursive match - then the handful of symbols that looked obvious start behavi…
Five Languages, One Law
A library gets proven by people using it. A specification is a harder claim to back up: someone else has to build from your rules alone, without bei…
SSE Fragmented My JSON Into 30 Pieces. Here's the Parser That Put It Back Together.
I was building a streaming chat interface against MonkeyCode's free model access and its free server option, and the first few test runs went so smo…
The Lottielab watermark is layer 12345679
There is a tool on GitHub called "lottielab-watermark-remover" . It is a few lines long. All it does is walk the layers array of a Lottie file and d…
Moderation Summary JSON API: 4 Schema Rules for Title and Bullets
Use chat completions with schema-like JSON instructions, then reject any response that fails a local contract before a moderation report reaches a h…
How I wrote a Go message broker with a throughput of a million messages per second
I built HermitMQ entirely in Go. The main feature is ditching heavy wrappers like JSON in favor of a custom 29 byte binary protocol. Additionally, d…
How to Minify JavaScript, CSS, and JSON (Free, No Build Step)
Minification is one of those things everyone knows they should do before shipping to production, but reaching for a full build pipeline just to shri…