Paste Stack Trace AI: Fix a TypeScript Error with a Minimal Patch

Paste stack trace AI — the shortest path to a fix

If you want to paste a stack trace into AI and get something you can ship, order matters more than model brand. Put the error block first, then the failing snippet, then one sentence about the parent call site. Models latch onto the first failure signal. Dumping a whole file first often invents a different bug. On spacebunny.me the one-click demo “Paste error → patch” already uses this order so you can try the workflow without writing a prompt from scratch.

Fix TypeScript error with AI (concrete example)

A common case when you fix a TypeScript error with AI: TypeError: Cannot read properties of undefined (reading 'map') in a React list while users is still undefined on first paint. Ask for three root-cause bullets and a minimal unified diff — not a rewrite of the component tree. Temperature 0.2–0.4 keeps the patch boring and correct.

Copy-paste prompt skeleton

• Role: senior TypeScript engineer; output root cause (≤3 bullets) + minimal unified diff.
• Paste the full stack trace next (frames + file paths).
• Paste only the related 20–60 lines of code — not the whole package.
• Add one line of context: “Parent sometimes renders before fetch completes.”
• Forbid pep talks and full-file regenerations unless you ask for them.

What a good answer looks like

• Root cause tied to the stack frames you pasted (not a generic React lecture).
• A surgical patch: optional chaining, default [], or a loading guard — one clear change.
• One regression idea: render with users={undefined} and assert no throw.
• If the first reply misses, reply “still crashes on first paint — only change the map line” instead of pasting more files.

Credits: keep a stack-trace session cheap

A stack + short snippet is usually a few credits, not dozens. Watch the live estimate before send. Extra files burn tokens faster than a tighter instruction. When the estimate exceeds your balance, Spacebunny blocks send and links to /pricing#topup. Free signup credits are enough to prove the paste-stack-trace AI loop once; buy a $10 pack if you debug like this weekly.

Try it on Spacebunny

Open the playground, click “Paste error → patch”, replace the sample stack with yours, check the credit estimate, then send. Export Markdown when the diff looks right. Related: if your next task is docs, see how to AI summarize an RFC without wasting credits.