feat: add preserve-caught-error rule for ESLint >= 9.35.0

[Copilot]

This PR implements the new ESLint rule preserve-caught-error that was introduced in ESLint v9.35.0. The rule enforces adding a cause property when rethrowing errors to preserve the original error context.

What this PR does

• Conditionally enables the rule: Only applies preserve-caught-error when ESLint version is >= 9.35.0, ensuring backward compatibility
• Proper version detection: Uses semver to check the installed ESLint version at runtime
• Graceful fallback: Handles cases where ESLint package information is unavailable

Implementation details

The rule is added to the JavaScript configuration in src/eslint/configs/javascript.ts with version checking:

// Check if ESLint version is >= 9.35.0 to enable preserve-caught-error rule
const eslintInfo = await getPackageInfo("eslint");
const supportsPreserveCaughtError = 
  eslintInfo?.version !== undefined && semver.gte(eslintInfo.version, "9.35.0");

// Conditionally add the rule
...(supportsPreserveCaughtError ? { "preserve-caught-error": "error" } : {}),

Rule behavior

The preserve-caught-error rule will now catch patterns like:

// ❌ This will trigger an error
try {
  throw new Error("Original error");
} catch (error) {
  throw new Error("New error without cause"); // Missing cause
}

// ✅ This is correct
try {
  throw new Error("Original error");
} catch (error) {
  throw new Error("New error with cause", { cause: error }); // Preserves context
}

Testing

• Added comprehensive unit tests covering different ESLint version scenarios
• Verified manual functionality with test files
• All existing tests continue to pass
• Linting and build processes work correctly

Fixes #529.

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commit: af01ce0

[kguzek]

zbyt ambitne