Function mergeWith

packages/angular_devkit/schematics/src/rules/base.ts:62–69

(source: Source, strategy: MergeStrategy = MergeStrategy.Default)

 * Merge an input tree with the source passed in.
 */
export function mergeWith(source: Source, strategy: MergeStrategy = MergeStrategy.Default): Rule {
  return (tree, context) => {
    return callSource(source, context).pipe(
      map((sourceTree) => tree.merge(sourceTree, strategy || context.strategy)),
      mapTo(tree),
    );
  };
}

export function noop(): Rule {
  return () => {};