From 70439b375da36d7f7b186b0588c0f0419cb61c1b Mon Sep 17 00:00:00 2001
From: Peter Sheehan <145384599+peter-bread@users.noreply.github.com>
Date: Fri, 16 Jan 2026 02:22:13 +0000
Subject: [PATCH] feat: replace `peter.util.list.uniq` with `vim.list.unique`

---
 lua/peter/plugins/core/treesitter.lua |  3 +--
 lua/peter/plugins/lsp/mason.lua       |  3 +--
 lua/peter/util/list.lua               | 27 ++++++++++++---------------
 3 files changed, 14 insertions(+), 19 deletions(-)

diff --git a/lua/peter/plugins/core/treesitter.lua b/lua/peter/plugins/core/treesitter.lua
index f01db527..af232a84 100644
--- a/lua/peter/plugins/core/treesitter.lua
+++ b/lua/peter/plugins/core/treesitter.lua
@@ -40,12 +40,11 @@ return {
     ---@param opts peter.treesitter.Config
     config = function(_, opts)
       local nts = require("nvim-treesitter")
-      local list = require("peter.util.list")
       local autocmds = require("peter.util.autocmds")
 
       nts.setup(opts --[[@as TSConfig]])
 
-      local ensure_installed = list.uniq(opts.ensure_installed or {})
+      local ensure_installed = vim.list.unique(opts.ensure_installed or {})
 
       local already_installed = nts.get_installed()
 
diff --git a/lua/peter/plugins/lsp/mason.lua b/lua/peter/plugins/lsp/mason.lua
index d60e073a..2d112ed3 100644
--- a/lua/peter/plugins/lsp/mason.lua
+++ b/lua/peter/plugins/lsp/mason.lua
@@ -42,8 +42,7 @@ return {
 
     ---@param opts peter.mason.Opts
     config = function(_, opts)
-      local list = require("peter.util.list")
-      opts.ensure_installed = list.uniq(opts.ensure_installed or {})
+      opts.ensure_installed = vim.list.unique(opts.ensure_installed or {})
 
       require("mason").setup(opts --[[@as MasonSettings]])
 
diff --git a/lua/peter/util/list.lua b/lua/peter/util/list.lua
index 698768f6..76f3607d 100644
--- a/lua/peter/util/list.lua
+++ b/lua/peter/util/list.lua
@@ -7,21 +7,18 @@ local M = {}
 --
 --[[ ---------------------------------------------------------------------- ]]
 
----Remove duplicate elements from a list.
----@param list any[] List to remove duplicates from.
----@return any[] new_list List with duplicates removed.
-function M.uniq(list)
-  local hash = {}
-  local ret = {}
-
-  for _, v in ipairs(list) do
-    if not hash[v] then
-      ret[#ret + 1] = v
-      hash[v] = true
-    end
-  end
-
-  return ret
+---Removes duplicate values from a list-like table without modifying the original
+---table.
+---
+---The input table is not modified. A new table is created by this function.
+---
+---For in-place deduplication, see `:h vim.list.unique`.
+---
+---@generic T
+---@param t T[]
+---@return T[] t A new, deduplicated list.
+function M.uniq_copy(t)
+  return vim.list.unique(vim.deepcopy(t))
 end
 
 return M