Function readAnsiEscapeAt

src/replay/test/progress.ts:320–326

(value: string, index: number)

}

function readAnsiEscapeAt(value: string, index: number): string | null {
  if (!value.startsWith(ANSI_ESCAPE_PREFIX, index)) return null;
  for (let cursor = index + ANSI_ESCAPE_PREFIX.length; cursor < value.length; cursor += 1) {
    if (isAnsiFinalByte(value.charCodeAt(cursor))) return value.slice(index, cursor + 1);
  }
  return null;
}

function isAnsiFinalByte(code: number): boolean {
  return code >= 0x40 && code <= 0x7e;