Function validateErrorCodes

scripts/update_metrics.ts:108–132

()

}

function validateErrorCodes(): void {
  // The compiled JavaScript object has both forward and backward mappings of the enum,
  // for example: { '0': 'ERROR_CODE_UNSPECIFIED', 'ERROR_CODE_UNSPECIFIED': 0 }.
  // This filters out the numeric keys.
  const stringKeysOnly = Object.entries(ErrorCode).filter(([key]) =>
    isNaN(Number(key)),
  );

  let expectedIndex = 0;
  for (const [key, index] of stringKeysOnly) {
    if (index !== expectedIndex) {
      throw new Error(
        `Error: ErrorCode enums must be sequentially numbered from 0.`,
      );
    }
    if (/_\d/.test(key)) {
      throw new Error(
        `Error: ErrorCode enum ${key} is invalid. No numbers should be preceded with an underscore.`,
      );
    }
    expectedIndex++;
  }

  console.log(`Successfully validated ${expectedIndex} ErrorCode enums.`);
}

function main() {
  validateErrorCodes();