Function truncateStringLine

packages/emcn/src/components/code/code.tsx:315–327

* Truncates a long string value in a JSON line for collapsed display. * * @param line - The original line content * @returns Truncated line with ellipsis

(line: string)

 * @returns Truncated line with ellipsis
 */
function truncateStringLine(line: string): string {
  const colonIdx = line.indexOf('":')
  if (colonIdx === -1) return line

  const valueStart = line.indexOf('"', colonIdx + 1)
  if (valueStart === -1) return line

  const prefix = line.slice(0, valueStart + 1)
  const suffix = line.charCodeAt(line.length - 1) === 44 /* ',' */ ? '",' : '"'
  const truncated = line.slice(valueStart + 1, valueStart + 1 + MAX_TRUNCATED_STRING_LENGTH)

  return `${prefix}${truncated}...${suffix}`
}

/**
 * Custom hook for managing JSON collapse state and computations.