Files
everything-claude-code/scripts/hooks/post-edit-format.js
Affaan Mustafa 36864ea11a fix: harden error handling, fix TOCTOU races, and improve test accuracy
Core library fixes:
- session-manager.js: wrap all statSync calls in try-catch to prevent
  TOCTOU crashes when files are deleted between readdir and stat
- session-manager.js: use birthtime||ctime fallback for Linux compat
- session-manager.js: remove redundant existsSync before readFile
- utils.js: fix findFiles TOCTOU race on statSync inside readdir loop

Hook improvements:
- Add 1MB stdin buffer limits to all PostToolUse hooks to prevent
  unbounded memory growth from large payloads
- suggest-compact.js: use fd-based atomic read+write for counter file
  to reduce race window between concurrent invocations
- session-end.js: log when transcript file is missing, check
  replaceInFile return value for failed timestamp updates
- start-observer.sh: log claude CLI failures instead of silently
  swallowing them, check observations file exists before analysis

Test fixes:
- Fix blocking hook tests to send matching input (dev server command)
  and expect correct exit code 2 instead of 1
2026-02-12 13:40:14 -08:00

44 lines
1.0 KiB
JavaScript

#!/usr/bin/env node
/**
* PostToolUse Hook: Auto-format JS/TS files with Prettier after edits
*
* Cross-platform (Windows, macOS, Linux)
*
* Runs after Edit tool use. If the edited file is a JS/TS file,
* formats it with Prettier. Fails silently if Prettier isn't installed.
*/
const { execFileSync } = require('child_process');
const fs = require('fs');
const MAX_STDIN = 1024 * 1024; // 1MB limit
let data = '';
process.stdin.on('data', chunk => {
if (data.length < MAX_STDIN) {
data += chunk;
}
});
process.stdin.on('end', () => {
try {
const input = JSON.parse(data);
const filePath = input.tool_input?.file_path;
if (filePath && /\.(ts|tsx|js|jsx)$/.test(filePath) && fs.existsSync(filePath)) {
try {
execFileSync('npx', ['prettier', '--write', filePath], {
stdio: ['pipe', 'pipe', 'pipe'],
timeout: 15000
});
} catch {
// Prettier not installed or failed — non-blocking
}
}
} catch {
// Invalid input — pass through
}
console.log(data);
});