Is there a way to flatten or merge single-folder folders in vs code explorer?

Question

I don't know if there's a name for this kind of behavior.
I've seen it in IntelliJ, where single-folder folders are unified or flattened in the project tree pane, where instead of:

.
├── pom.xml
├── src
│   ├── main
│   │   ├── java
│   │   │   └── com
│   │   │       └── somepkg
│   │   │           └── coreapi
│   │   │               ├── controllers
│   │   │               │   ├── AssetMutations.java
│   │   │               │   ├── HomeController.java
│   │   │               │   └── SessionsQuery.java
│   │   │               ├── CoreApiApplication.java

You see:

.
├── pom.xml
├── src
│   ├── main
│   │   ├── java
│   │   │   └── com.somepkg.coreapi
│   │   │       ├── controllers
│   │   │       │   ├── AssetMutations.java
│   │   │       │   ├── HomeController.java
│   │   │       │   └── SessionsQuery.java
│   │   │       ├── CoreApiApplication.java

Is there a way to make vs code tree-view file explorer to show subfolders this way?

Answer 1

It looks like it is in the iteration plan for June, 2019.

See Iteration plan for June, 2019: release in July, 2019 and issue: merging single child directories.

---

Update: making it into v1.41 to be released in December, 2019. See https://github.com/microsoft/vscode-docs/blob/vnext/release-notes/v1_41.md#compact-folders-in-explorer

Compact folders in Explorer

In the File Explorer, we now render single child folders in a compact form. In such a form, single child folders will be compressed in a combined tree element. Useful for Java package structures, for example.

Setting explorer.compactFolders controls this behavior. By default, this setting is turned on.

So "explorer.compactFolders": false, will disable the feature.