Function branchAndMerge

packages/angular_devkit/schematics/src/rules/base.ts:89–96

(rule: Rule, strategy: MergeStrategy = MergeStrategy.Default)

}

export function branchAndMerge(rule: Rule, strategy: MergeStrategy = MergeStrategy.Default): Rule {
  return (tree, context) => {
    return callRule(rule, tree.branch(), context).pipe(
      map((branch) => tree.merge(branch, strategy || context.strategy)),
      mapTo(tree),
    );
  };
}

export function when(predicate: FilePredicate<boolean>, operator: FileOperator): FileOperator {
  return (entry: FileEntry) => {