pattern-debug

Debug Pattern Use Skill("ct") for ct CLI documentation if debugging deployment or piece issues. Read First docs/development/debugging/workflow.md - 5-step debugging process docs/development/debugging/README.md - Error reference matrix Process Check TypeScript errors: deno task ct check pattern.tsx --no-run Match error to documentation: Read the error message carefully Check docs/development/debugging/README.md for matching errors Check gotchas: docs/development/debugging/gotchas/handler-inside-pattern.md docs/development/debugging/gotchas/filter-map-find-not-a-function.md docs/development/debugging/gotchas/onclick-inside-computed.md Simplify to minimal reproduction: Comment out code until error disappears Add back piece by piece to find root cause Fix and verify: Apply fix Run tests to confirm Common Issues Handler defined inside pattern body: Move handler() to module scope Only bind it inside pattern: onClick={myHandler({ state })} Type errors with Writable/Default: Check if field needs write access → use Writable<> Check if field could be undefined → use Default Action not triggering: Ensure Output type includes action as Stream Use .send() not .get() to trigger Done When Root cause identified Error fixed Tests pass again