Function compileCombinedValueRegex

lib/reactotron-mcp/src/redaction.ts:209–225

* Validate each pattern individually so one bad regex doesn't kill the rest, * then fold the survivors into a single alternation for one-pass matching.

(patterns: string[])

 * then fold the survivors into a single alternation for one-pass matching.
 */
function compileCombinedValueRegex(patterns: string[]): RegExp | null {
  const valid: string[] = []
  for (const pattern of patterns) {
    try {
      new RegExp(pattern)
      valid.push(pattern)
    } catch {
      // Invalid regex — skip
    }
  }
  if (valid.length === 0) return null
  try {
    return new RegExp(valid.map((p) => `(?:${p})`).join("|"), "g")
  } catch {
    return null
  }
}

function parseRules(rules: McpRedactionRules): ParsedRules {
  const statePathPatterns = rules.statePathPatterns ?? []