feat(provider): support bun as node.js provider #38517

Problem:
Neovim's Node.js provider does not support the Bun package manager.
PR #26829 attempted to add this but used a hardcoded path and was abandoned.

Solution:
- Use `bun pm bin -g` to dynamically locate the global binary directory.
- Update `health.lua` to recognize bun installations.

runtime/autoload/provider/node.vim

@@ -83,6 +83,22 @@ function! provider#node#Detect() abort
     let pnpm_opts.job_id = jobstart('pnpm --loglevel silent root -g', pnpm_opts)
   endif
 
+  if executable('bun')
+    let bun_bin_dir = trim(system(['bun', 'pm', 'bin', '-g']))
+    if v:shell_error == 0 && !empty(bun_bin_dir)
+      if has('win32')
+        "On Windows Node.js cannot execute the .cmd shims created by Bun.
+        let bun_root_dir = fnamemodify(bun_bin_dir, ':h')
+        let bun_default_path = bun_root_dir . '/install/global/node_modules/neovim/bin/cli.js'
+      else
+        let bun_default_path = bun_bin_dir . '/neovim-node-host'
+      endif
+      if filereadable(bun_default_path)
+        return [bun_default_path, '']
+      endif
+    endif
+  endif
+
   " npm returns the directory faster, so let's check that first
   if !empty(npm_opts)
     let result = jobwait([npm_opts.job_id])

runtime/doc/news.txt

@@ -163,7 +163,7 @@ PERFORMANCE
 
 PLUGINS
 
-• todo
+• provider: add bun support for Node.js plugins
 
 STARTUP
 

runtime/lua/vim/provider/health.lua

@@ -174,11 +174,12 @@ local function node()
       vim.fn.executable('npm') == 0
       and vim.fn.executable('yarn') == 0
       and vim.fn.executable('pnpm') == 0
+      and vim.fn.executable('bun') == 0
     )
   then
     health.warn(
-      '`node` and `npm` (or `yarn`, `pnpm`) must be in $PATH.',
-      'Install Node.js and verify that `node` and `npm` (or `yarn`, `pnpm`) commands work.'
+      '`node` and `npm` (or `yarn`, `pnpm`, `bun`) must be in $PATH.',
+      'Install Node.js and verify that `node` and `npm` (or `yarn`, `pnpm`, `bun`) commands work.'
     )
     return
   end
@@ -199,10 +200,11 @@ local function node()
   local node_detect_table = vim.fn['provider#node#Detect']() ---@type string[]
   local host = node_detect_table[1]
   if host:find('^%s*$') then
-    health.warn('Missing "neovim" npm (or yarn, pnpm) package.', {
+    health.warn('Missing "neovim" npm (or yarn, pnpm, bun) package.', {
       'Run in shell: npm install -g neovim',
       'Run in shell (if you use yarn): yarn global add neovim',
       'Run in shell (if you use pnpm): pnpm install -g neovim',
+      'Run in shell (if you use bun): bun install -g neovim',
       'You may disable this provider (and warning) by adding `let g:loaded_node_provider = 0` to your init.vim',
     })
     return
@@ -255,9 +257,10 @@ local function node()
       'Run in shell: npm install -g neovim',
       'Run in shell (if you use yarn): yarn global add neovim',
       'Run in shell (if you use pnpm): pnpm install -g neovim',
+      'Run in shell (if you use bun): bun install -g neovim',
     })
   else
-    health.ok('Latest "neovim" npm/yarn/pnpm package is installed: ' .. current_npm)
+    health.ok('Latest "neovim" npm/yarn/pnpm/bun package is installed: ' .. current_npm)
   end
 end