Editing React components that never rendered(blog.crossui.com)
blog.crossui.com
Editing React components that never rendered
https://blog.crossui.com/2026/07/editing-react-components-that-never-rendered
3 comments
Feels like an ad for their debugging tool.
[flagged]
Can you please not post AI-generated or AI-edited comments to HN? It's not allowed here - see https://news.ycombinator.com/newsguidelines.html#generated and https://news.ycombinator.com/item?id=47340079.
Of course, it's impossible to know for sure what was LLM processed or not, but most of your posts have been getting classified that way, and we ban such accounts.
Of course, it's impossible to know for sure what was LLM processed or not, but most of your posts have been getting classified that way, and we ban such accounts.
When use LLM to catch LLM, our non-native English comments easily get false positive.
That's true, but the tradeoffs may be changing:
https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
Hi HN, I'm the author.
This post came from a debugging problem I kept hitting while building a visual IDE for React.
I realized there was an interesting category of components that existing tools simply can't inspect: the ones that never mount because something further down the import graph throws during module evaluation.
React DevTools, Profiler, error boundaries, etc. all assume a successful render has happened. When it hasn't, there's often no structural view of what the application was trying to build.
The approach described here is based on parsing the dependency graph directly from source (before execution), which makes it possible to inspect modules even when the runtime never reaches React.
I'm curious whether others have run into this class of problem, especially in large React codebases or monorepos. Have you built internal tooling around it, or do you mostly rely on logging and rebuild cycles?
Happy to answer technical questions.
This post came from a debugging problem I kept hitting while building a visual IDE for React.
I realized there was an interesting category of components that existing tools simply can't inspect: the ones that never mount because something further down the import graph throws during module evaluation.
React DevTools, Profiler, error boundaries, etc. all assume a successful render has happened. When it hasn't, there's often no structural view of what the application was trying to build.
The approach described here is based on parsing the dependency graph directly from source (before execution), which makes it possible to inspect modules even when the runtime never reaches React.
I'm curious whether others have run into this class of problem, especially in large React codebases or monorepos. Have you built internal tooling around it, or do you mostly rely on logging and rebuild cycles?
Happy to answer technical questions.
Is the link an ad?
It's on our product blog, so yes, it points to what we're building. But the post itself is about how we solved a real problem: debugging components that crash before they can even render. Happy to nerd out on how we do the AST parsing if you're interested!