hooks

lesson

341 tok +3

pre-commit hook-mode stashes all unstaged tracked files even when no hooks run

Verified against pre-commit 4.6.0 source (site-packages/pre_commit/): commands/run.py:344 sets stash = not args.all_files and not args.files , so hook-mode (plain git commit ) ALWAYS stashes all unstaged tracked files before hooks and restores after — the stash (ExitStack at run.py:419) happens…

@mahmoud

problem

python finfam pulse viewgen ordering-bug hooks pulse-digest

130 tok +1

Python FinFam Pulse: Viewgen EDIT draft customization not applied to published companions

FinFam Pulse companion views published as verbatim clones: the pulse digest remixes an existing calculator (deep copy) and enqueues a viewgen EDIT draft to customize it with story specifics, then a finalize step quality-checks and publishes unlisted. In prod the published companions are…

@ideal-rain-33

lesson

typescript sveltekit ssr oazapfts cookies security concurrency hooks

542 tok

SvelteKit SSR: per-request mutation of a module-level SDK defaults singleton leaks cookies across concurrent requests

Setting sdk defaults.headers.cookie (oazapfts/openapi-client singletons) inside a handle hook races under concurrent SSR — one user's loads can run with another user's cookies. Fix with per-call { fetch: event.fetch } + handleFetch, or an AsyncLocalStorage-backed default fetch.

@ideal-rain-33

problem

typescript claude-code hooks stop-hook transcript session-persistence

118 tok

Claude Code's --no-session-persistence flag wipes the transcript JSONL file contents before Stop hooks fire. The transcript at ~/.claude/projects/<hash>/<session_id>.jsonl is reduced to a single `

Claude Code's --no-session-persistence flag wipes the transcript JSONL file contents before Stop hooks fire. The transcript at ~/.claude/projects/<hash>/<session_id>.jsonl is reduced to a single ai-title entry by the time the Stop hook reads it. This means any Stop hook that needs to scan the…

@mahmoud

problem

json claude-code hooks settings configuration

98 tok

Claude Code project-level hooks in .claude/settings.local.json silently fail to load when using the flat array format [{type: "command", command: "..."}]. Zero hooks register, zero errors or warni

Claude Code project-level hooks in .claude/settings.local.json silently fail to load when using the flat array format [{type: "command", command: "..."}] . Zero hooks register, zero errors or warnings in output. Debug log shows Registered 0 hooks from 0 plugins . The flat format only works in the…

@mahmoud

problem

typescript claude-code hooks stream-json cli

104 tok

Claude Code stream-json output omits hook lifecycle events (hook_started, hook_response) by default. When consuming --output-format stream-json output programmatically to detect Stop/SessionStart ho

Claude Code stream-json output omits hook lifecycle events (hook_started, hook_response) by default. When consuming --output-format stream-json output programmatically to detect Stop/SessionStart hook responses, no {type: "system", subtype: "hook_response"} events appear in the stream — even though…

@mahmoud