1 files changed, 74 insertions, 0 deletions
diff --git a/autoload/prettier/resolver/executable.vim b/autoload/prettier/resolver/executable.vim
new file mode 100644
index 0000000..8d233ab
--- /dev/null
+++ b/autoload/prettier/resolver/executable.vim
@@ -0,0 +1,74 @@
+let s:ROOT_DIR = fnamemodify(resolve(expand('<sfile>:p')), ':h')
+
+" By default we will search for the following
+" => user defined prettier cli path from vim configuration file
+" => locally installed prettier inside node_modules on any parent folder
+" => globally installed prettier
+" => vim-prettier prettier installation
+" => if all fails suggest install
+function! prettier#resolver#executable#getPath() abort
+  let l:user_defined_exec_path = fnamemodify(g:prettier#exec_cmd_path, ':p')
+  if executable(l:user_defined_exec_path)
+    return l:user_defined_exec_path
+  endif
+
+  let l:localExec = s:ResolveExecutable(getcwd())
+  if executable(l:localExec)
+    return fnameescape(l:localExec)
+  endif
+
+  let l:globalExec = s:ResolveExecutable()
+  if executable(l:globalExec)
+    return fnameescape(l:globalExec)
+  endif
+
+  let l:pluginExec = s:ResolveExecutable(s:ROOT_DIR)
+  if executable(l:pluginExec)
+    return fnameescape(l:pluginExec)
+  endif
+
+  return -1
+endfunction
+
+function! s:GetExecPath(...) abort
+  let l:rootDir = a:0 > 0 ? a:1 : -1
+  let l:dir = l:rootDir != -1 ? l:rootDir . '/.bin/' : ''
+  return l:dir . 'prettier'
+endfunction
+
+" Searches for the existence of a directory accross 
+" ancestral parents
+function! s:TraverseAncestorDirSearch(rootDir) abort
+  let l:root = a:rootDir
+  let l:dir = 'node_modules'
+
+  while 1
+    let l:searchDir = l:root . '/' . l:dir
+    if isdirectory(l:searchDir)
+      return l:searchDir
+    endif
+
+    let l:parent = fnamemodify(l:root, ':h')
+    if l:parent == l:root
+      return -1
+    endif
+
+    let l:root = l:parent
+  endwhile
+endfunction
+
+function! s:ResolveExecutable(...) abort
+  let l:rootDir = a:0 > 0 ? a:1 : 0
+  let l:exec = -1
+
+  if isdirectory(l:rootDir)
+    let l:dir = s:TraverseAncestorDirSearch(l:rootDir)
+    if l:dir != -1
+      let l:exec = s:GetExecPath(l:dir)
+    endif
+  else
+    let l:exec = s:GetExecPath()
+  endif
+
+  return l:exec
+endfunction