Function writeChangeMetadata

src/utils/change-metadata.ts:53–84

(
  changeDir: string,
  metadata: ChangeMetadata,
  projectRoot?: string
)

 * @throws ChangeMetadataError if validation fails or write fails
 */
export function writeChangeMetadata(
  changeDir: string,
  metadata: ChangeMetadata,
  projectRoot?: string
): void {
  const metaPath = path.join(changeDir, METADATA_FILENAME);

  // Validate schema exists
  validateSchemaName(metadata.schema, projectRoot);

  // Validate with Zod
  const parseResult = ChangeMetadataSchema.safeParse(metadata);
  if (!parseResult.success) {
    throw new ChangeMetadataError(
      `Invalid metadata: ${parseResult.error.message}`,
      metaPath
    );
  }

  // Write YAML file
  const content = yaml.stringify(parseResult.data);
  try {
    fs.writeFileSync(metaPath, content, 'utf-8');
  } catch (err) {
    const ioError = err instanceof Error ? err : new Error(String(err));
    throw new ChangeMetadataError(
      `Failed to write metadata: ${ioError.message}`,
      metaPath,
      ioError
    );
  }
}

/**
 * Reads change metadata from .openspec.yaml in the change directory.