1 files changed, 83 insertions, 0 deletions
diff --git a/lua/lsp/null-ls.lua b/lua/lsp/null-ls.lua
new file mode 100644
index 00000000..48924be5
--- /dev/null
+++ b/lua/lsp/null-ls.lua
@@ -0,0 +1,83 @@
+local M = {}
+
+local null_ls = require "null-ls"
+local sources = {}
+
+local local_executables = { "prettier", "prettierd", "prettier_d_slim", "eslint_d", "eslint" }
+
+local function is_table(t)
+  return type(t) == "table"
+end
+
+local function is_string(t)
+  return type(t) == "string"
+end
+
+local function has_value(tab, val)
+  for _, value in ipairs(tab) do
+    if value == val then
+      return true
+    end
+  end
+
+  return false
+end
+
+local find_local_exe = function(exe)
+  vim.cmd "let root_dir = FindRootDirectory()"
+  local root_dir = vim.api.nvim_get_var "root_dir"
+  local local_exe = root_dir .. "/node_modules/.bin/" .. exe
+  return local_exe
+end
+
+local function setup_ls(exe, type)
+  if has_value(local_executables, exe) then
+    local smart_executable = null_ls.builtins[type][exe]
+    local local_executable = find_local_exe(exe)
+    if vim.fn.executable(local_executable) == 1 then
+      smart_executable._opts.command = local_executable
+      table.insert(sources, smart_executable)
+    else
+      if vim.fn.executable(exe) == 1 then
+        table.insert(sources, smart_executable)
+      end
+    end
+  else
+    if vim.fn.executable(exe) == 1 then
+      table.insert(sources, null_ls.builtins[type][exe])
+    end
+  end
+  null_ls.register { sources = sources }
+end
+
+-- TODO: for linters and formatters with spaces and '-' replace with '_'
+local function setup(filetype, type)
+  local executables = nil
+  if type == "diagnostics" then
+    executables = lvim.lang[filetype].linters
+  end
+  if type == "formatting" then
+    executables = lvim.lang[filetype].formatter.exe
+  end
+
+  if is_table(executables) then
+    for _, exe in pairs(executables) do
+      if exe ~= "" then
+        setup_ls(exe, type)
+      end
+    end
+  end
+  if is_string(executables) and executables ~= "" then
+    setup_ls(executables, type)
+  end
+end
+
+-- TODO: return the formatter if one was registered, then turn off the builtin formatter
+function M.setup(filetype)
+  setup(filetype, "formatting")
+  setup(filetype, "diagnostics")
+  lvim.sources = sources
+  return sources
+end
+
+return M