addDevDependencyToPubspec static method

void addDevDependencyToPubspec({ required String pubspecPath, required String name, required String version, })

Add a dev dependency to pubspec.yaml under the dev_dependencies map.

If the dev dependency already exists its version is updated in place. Creates the dev_dependencies section if it does not exist.

@param pubspecPath Absolute or relative path to pubspec.yaml. @param name Package name as published on pub.dev. @param version Version constraint, e.g. ^1.0.0.

Implementation

static void addDevDependencyToPubspec({
  required String pubspecPath,
  required String name,
  required String version,
}) {
  final content = FileHelper.readFile(pubspecPath);
  final editor = YamlEditor(content);

  // 1. Ensure `dev_dependencies` exists. `parseAt` throws when the key path
  //    is missing, so catch and create a fresh map in either no-value or
  //    no-key case.
  try {
    if (editor.parseAt(['dev_dependencies']).value == null) {
      editor.update(['dev_dependencies'], {});
    }
  } catch (_) {
    editor.update(['dev_dependencies'], {});
  }

  // 2. Upsert the dev dependency.
  editor.update(['dev_dependencies', name], version);

  FileHelper.writeFile(pubspecPath, editor.toString());
}