Here is a plan of what I'm planning to do for the next v8 release. Feel free to join, by picking one on the objectives.

v8

• Set $.verbose = false by default ∅
  • stderr should be echoed by default.
  • stdout should not be printed by default.
• Refactor $ to support const $$ = $({...}) syntax.
  • AbortController support by $.
  • Split $ into a separate package with minimum dependencies. (probably)
    • Add zx/core.
  • Remove ps-tree dependency.
  • (probably) Deprecate within().
    • Refactor process.cwd() calls
  • Add trim to ProcessOutput::valueOf(): string
  • Add $.sync API.
• Use bash by default on Windows (and fail if not found, with ZX_SHELL env config).
• Use node18 by default (but allow zx to run on node16 too).
  • Remove node-fetch dependency (node18 already has fetch, this allows to drop DOM lib in ts).
• Add some CI tests for deno.
• Bundle deps.

Future

• Better support for multiline commands.
• Better support for dotenv.
• $.log refactoring (probably)
• Remove fs-extra dependency (probably)
• Add exit()
• Add pool()
• Add progressBar()
• Improve retry()
• Improve --install
• Add API for plugins*

Note: Before submitting PR, discuss implementation and API.
Note: * - complex task.