Function parseYaml

packages/blocks/src/deepnote-file/parse-yaml.ts:124–144

(yamlContent: string)

 * - Explicit typing enforced by schema
 */
export function parseYaml(yamlContent: string): unknown {
  try {
    // Validate no BOM prefix (string-level check only)
    // Note: For proper UTF-8 validation, use decodeUtf8NoBom() on raw bytes before calling this
    validateNoBomPrefix(yamlContent)

    // Validate YAML structure (no anchors, aliases, merge keys, custom tags)
    validateYamlStructure(yamlContent)

    // Parse and validate in a single pass (checks duplicate keys and converts to JS)
    const parsed = parseAndValidate(yamlContent)

    return parsed
  } catch (error) {
    if (error instanceof DeepnoteError) {
      throw error
    }
    const message = error instanceof Error ? error.message : String(error)
    throw new ParseError(`Failed to parse Deepnote file: ${message}`, { cause: error })
  }
}