エラー処理

import * as errors from "@supertone/supertone/models/errors";

try {
  const response = await client.textToSpeech.createSpeech({ /* ... */ });
} catch (err) {
  if (err instanceof errors.BadRequestErrorResponse) {
    console.error("Bad request:", err.message);
  } else if (err instanceof errors.UnauthorizedErrorResponse) {
    rotateKeyAndRetry();
  } else if (err instanceof errors.PaymentRequiredErrorResponse) {
    notifyLowCredits();
  } else if (err instanceof errors.ForbiddenErrorResponse) {
    fallbackToPresetVoice();
  } else if (err instanceof errors.TooManyRequestsErrorResponse) {
    await backoffAndRetry();
  } else if (err instanceof errors.InternalServerErrorResponse) {
    await retryWithBackoff();
  } else if (err instanceof errors.SupertoneError) {
    console.error(`HTTP ${err.statusCode}: ${err.message}`);
  } else {
    throw err;
  }
}