Function extractCompilationErrors

apps/sim/app/api/tools/latex/route.ts:148–164

* Extracts TeX error lines (lines starting with `!`, each with two lines of * context) from the compiler log files returned by the compile service.

(logFiles: unknown)

 * context) from the compiler log files returned by the compile service.
 */
function extractCompilationErrors(logFiles: unknown): string | undefined {
  if (typeof logFiles !== 'object' || logFiles === null) return undefined

  const snippets: string[] = []
  for (const log of Object.values(logFiles)) {
    if (typeof log !== 'string') continue
    const lines = log.split('\n')
    for (let i = 0; i < lines.length; i++) {
      if (lines[i].startsWith('!')) {
        snippets.push(lines.slice(i, i + 3).join('\n'))
      }
    }
  }

  if (snippets.length === 0) return undefined
  return truncate([...new Set(snippets)].join('\n\n'), MAX_ERROR_MESSAGE_CHARS)
}

/**
 * Maps a failed compile-service response to a JSON error response: 422 with