Add a tree viewer to display hierarchies in tree format

[naiyerasif]

Related problem

There are many instances where I'm interested in viewing the hierarchies, for example,

• folder hierarchy (particularly when I'm doing ls **/*)
• object hierarchy while viewing large XML, JSON files, etc

Describe the solution you'd like

For example, for ls **/* | where type == dir | tree --level 1, I'd like to see a hierarchy of directories at the depth 1.

.
├── drafts
├── templates
╰── workspaces

Similarly, for an application.yml containing the following configuration

management:
  endpoints.web.exposure.include: health,info
  endpoint.info.enabled: true
  info.env.enabled: true

info:
  app.version: 1.0.0
  java.version: 22

open application.yml | tree can display the hierarchy as follows.

.
├── management
│  ├── endpoints
│  │  ╰── web
│  │     ╰── exposure
│  │        ╰── include
│  ├── endpoint
│  │  ╰── info
│  │     ╰── enabled
│  ╰── info
│     ╰── env
│        ╰── enabled
╰── info
   ├── app
   │  ╰── version
   ╰── java
      ╰── version

Describe alternatives you've considered

For files hierarchies, eza provides a nice tree view but for viewing the hierarchies of different file types, I've hacked together some scripts. Those scripts get the job done but are a pain to maintain because of underlying dependencies.

Additional context and details

No response

[francesco-gaglione]

@naiyerasif if confirmed I can work on this... directions on where to find the tree command in the source code?

[naiyerasif]

directions on where to find the tree command in the source code

There's no tree command for now (there used by a tree command around v0.4 as far as I can recall but it was removed in later versions).

This issue still needs a triage so let's wait for someone from core contributors check this to determine if it is worth implementing.