Function validateCustomTheme

packages/cli/src/ui/themes/theme.ts:426–442

(customTheme: Partial<CustomTheme>)

 * @returns An object with isValid boolean and error message if invalid.
 */
export function validateCustomTheme(customTheme: Partial<CustomTheme>): {
  isValid: boolean;
  error?: string;
  warning?: string;
} {
  // Since all fields are optional, we only need to validate the name.
  if (customTheme.name && !isValidThemeName(customTheme.name)) {
    return {
      isValid: false,
      error: `Invalid theme name: ${customTheme.name}`,
    };
  }

  return {
    isValid: true,
  };
}

/**
 * Checks if a theme name is valid.