diff --git a/lua/gopher/_utils/init.lua b/lua/gopher/_utils/init.lua
index 58a17b2..ad27fb4 100644
--- a/lua/gopher/_utils/init.lua
+++ b/lua/gopher/_utils/init.lua
@@ -1,10 +1,11 @@
-local c = require "gopher.config"
-local log = require "gopher._utils.log"
 local utils = {}
 
 ---@param msg string
 ---@param lvl? integer by default `vim.log.levels.INFO`
 function utils.notify(msg, lvl)
+  local c = require "gopher.config"
+  local log = require "gopher._utils.log"
+
   lvl = lvl or vim.log.levels.INFO
   vim.notify(msg, lvl, {
     ---@diagnostic disable-next-line:undefined-field
diff --git a/lua/gopher/_utils/runner.lua b/lua/gopher/_utils/runner.lua
index 15eaa42..23e5f73 100644
--- a/lua/gopher/_utils/runner.lua
+++ b/lua/gopher/_utils/runner.lua
@@ -1,4 +1,3 @@
-local c = require "gopher.config"
 local runner = {}
 
 ---@class gopher.RunnerOpts
@@ -12,6 +11,7 @@ local runner = {}
 ---@param opts? gopher.RunnerOpts
 ---@return vim.SystemObj
 function runner.async(cmd, on_exit, opts)
+  local c = require "gopher.config"
   opts = opts or {}
   return vim.system(cmd, {
     cwd = opts.cwd or nil,
@@ -25,6 +25,7 @@ end
 ---@param opts? gopher.RunnerOpts
 ---@return vim.SystemCompleted
 function runner.sync(cmd, opts)
+  local c = require "gopher.config"
   opts = opts or {}
   return vim
     .system(cmd, {
diff --git a/lua/gopher/comment.lua b/lua/gopher/comment.lua
index 4ce264c..7c4f410 100644
--- a/lua/gopher/comment.lua
+++ b/lua/gopher/comment.lua
@@ -7,9 +7,6 @@
 --- Set cursor on line with function/method/struct/etc and
 --- run `:GoCmt` to generate a comment.
 
-local ts = require "gopher._utils.ts"
-local log = require "gopher._utils.log"
-local u = require "gopher._utils"
 local comment = {}
 
 --- NOTE: The order of functions executed inside this function is IMPORTANT.
@@ -20,6 +17,9 @@ local comment = {}
 ---@return string
 ---@dochide
 local function generate(bufnr, line)
+  local ts = require "gopher._utils.ts"
+  local u = require "gopher._utils"
+
   local sf_ok, sf_res = pcall(ts.get_struct_field_under_cursor, bufnr)
   if sf_ok then
     return u.indent(line, sf_res.indent) .. "// " .. sf_res.name .. " "
@@ -54,6 +54,8 @@ local function generate(bufnr, line)
 end
 
 function comment.comment()
+  local log = require "gopher._utils.log"
+
   local bufnr = vim.api.nvim_get_current_buf()
   local lnum = vim.fn.getcurpos()[2]
   local line = vim.fn.getline(lnum)
diff --git a/lua/gopher/go.lua b/lua/gopher/go.lua
index ca57068..7e36895 100644
--- a/lua/gopher/go.lua
+++ b/lua/gopher/go.lua
@@ -1,9 +1,10 @@
-local c = require "gopher.config"
-local u = require "gopher._utils"
-local r = require "gopher._utils.runner"
 local go = {}
 
 local function run(subcmd, args)
+  local c = require "gopher.config"
+  local u = require "gopher._utils"
+  local r = require "gopher._utils.runner"
+
   local rs = r.sync { c.commands.go, subcmd, unpack(args) }
   if rs.code ~= 0 then
     error("go " .. subcmd .. " failed: " .. rs.stderr)
diff --git a/lua/gopher/gotests.lua b/lua/gopher/gotests.lua
index 0a9eaf4..578252b 100644
--- a/lua/gopher/gotests.lua
+++ b/lua/gopher/gotests.lua
@@ -18,16 +18,16 @@
 ---
 --- If you prefer named tests, you can enable them in |gopher.nvim-config|.
 
-local c = require "gopher.config"
-local ts_utils = require "gopher._utils.ts"
-local r = require "gopher._utils.runner"
-local u = require "gopher._utils"
-local log = require "gopher._utils.log"
 local gotests = {}
 
 ---@param args table
 ---@dochide
 local function add_test(args)
+  local c = require "gopher.config"
+  local r = require "gopher._utils.runner"
+  local u = require "gopher._utils"
+  local log = require "gopher._utils.log"
+
   if c.gotests.named then
     table.insert(args, "-named")
   end
@@ -57,8 +57,10 @@ end
 
 -- generate unit test for one function
 function gotests.func_test()
+  local ts = require "gopher._utils.ts"
+
   local bufnr = vim.api.nvim_get_current_buf()
-  local func = ts_utils.get_func_under_cursor(bufnr)
+  local func = ts.get_func_under_cursor(bufnr)
 
   add_test { "-only", func.name }
 end
diff --git a/lua/gopher/iferr.lua b/lua/gopher/iferr.lua
index 79ebc0d..6a2bfcc 100644
--- a/lua/gopher/iferr.lua
+++ b/lua/gopher/iferr.lua
@@ -24,14 +24,15 @@
 ---    }
 ---
 
-local c = require "gopher.config"
-local u = require "gopher._utils"
-local r = require "gopher._utils.runner"
-local log = require "gopher._utils.log"
 local iferr = {}
 
 ---@param message? string Optional custom error message to use instead of config default
 function iferr.iferr(message)
+  local c = require "gopher.config"
+  local u = require "gopher._utils"
+  local r = require "gopher._utils.runner"
+  local log = require "gopher._utils.log"
+
   local curb = vim.fn.wordcount().cursor_bytes
   local pos = vim.fn.getcurpos()[2]
   local fpath = vim.fn.expand "%"
diff --git a/lua/gopher/impl.lua b/lua/gopher/impl.lua
index 907bbee..9dd1d4c 100644
--- a/lua/gopher/impl.lua
+++ b/lua/gopher/impl.lua
@@ -34,13 +34,14 @@
 ---    }
 --- <
 
-local c = require "gopher.config"
-local r = require "gopher._utils.runner"
-local ts_utils = require "gopher._utils.ts"
-local u = require "gopher._utils"
 local impl = {}
 
 function impl.impl(...)
+  local c = require "gopher.config"
+  local r = require "gopher._utils.runner"
+  local ts = require "gopher._utils.ts"
+  local u = require "gopher._utils"
+
   local args = { ... }
   local iface, recv = "", ""
   local bufnr = vim.api.nvim_get_current_buf()
@@ -50,12 +51,12 @@ function impl.impl(...)
     u.notify("arguments not provided. usage: :GoImpl f *File io.Reader", vim.log.levels.ERROR)
     return
   elseif #args == 1 then -- :GoImpl io.Reader
-    local st = ts_utils.get_struct_under_cursor(bufnr)
+    local st = ts.get_struct_under_cursor(bufnr)
     iface = args[1]
     recv = string.lower(st.name) .. " *" .. st.name
     append_after = st.end_
   elseif #args == 2 then -- :GoImpl w io.Writer
-    local st = ts_utils.get_struct_under_cursor(bufnr)
+    local st = ts.get_struct_under_cursor(bufnr)
     iface = args[2]
     recv = args[1] .. " *" .. st.name
     append_after = st.end_
diff --git a/lua/gopher/init.lua b/lua/gopher/init.lua
index dddd6a2..5e3ed0e 100644
--- a/lua/gopher/init.lua
+++ b/lua/gopher/init.lua
@@ -10,9 +10,6 @@
 --- Table of Contents
 ---@toc
 
-local tags = require "gopher.struct_tags"
-local tests = require "gopher.gotests"
-local go = require "gopher.go"
 local gopher = {}
 
 ---@toc_entry Setup
@@ -25,7 +22,7 @@ local gopher = {}
 ---@usage >lua
 ---  require("gopher").setup {} -- use default config or replace {} with your own
 --- <
----@param user_config gopher.Config See |gopher.nvim-config|
+---@param user_config? gopher.Config See |gopher.nvim-config|
 gopher.setup = function(user_config)
   require("gopher.config").setup(user_config)
 end
@@ -37,27 +34,68 @@ end
 --- install plugin's dependencies, you can run:
 --- `:GoInstallDeps` or `:GoInstallDepsSync`
 --- or use `require("gopher").install_deps()` if you prefer lua api.
-gopher.install_deps = require("gopher.installer").install_deps
+---@param opts? {sync:boolean}
+gopher.install_deps = function(opts)
+  return require("gopher.installer").install_deps(opts)
+end
+
+gopher.impl = function(...)
+  return require("gopher.impl").impl(...)
+end
 
-gopher.impl = require("gopher.impl").impl
-gopher.iferr = require("gopher.iferr").iferr
-gopher.comment = require("gopher.comment").comment
+---@param message? string Optional custom error message to use instead of config default
+gopher.iferr = function(message)
+  return require("gopher.iferr").iferr(message)
+end
+
+gopher.comment = function()
+  return require("gopher.comment").comment()
+end
 
 gopher.tags = {
-  add = tags.add,
-  rm = tags.remove,
-  clear = tags.clear,
+  ---@param opts gopher.StructTagInput
+  add = function(opts)
+    return require("gopher.struct_tags").add(opts)
+  end,
+  ---@param opts gopher.StructTagInput
+  rm = function(opts)
+    return require("gopher.struct_tags").remove(opts)
+  end,
+  clear = function()
+    return require("gopher.struct_tags").clear()
+  end,
 }
 
 gopher.test = {
-  add = tests.func_test,
-  exported = tests.all_exported_tests,
-  all = tests.all_tests,
+  add = function()
+    return require("gopher.gotests").func_test()
+  end,
+  exported = function()
+    return require("gopher.gotests").all_exported_tests()
+  end,
+  all = function()
+    return require("gopher.gotests").all_tests()
+  end,
 }
 
-gopher.get = go.get
-gopher.mod = go.mod
-gopher.work = go.work
-gopher.generate = go.generate
+---@param args string[]
+gopher.get = function(args)
+  return require("gopher.go").get(args)
+end
+
+---@param args string[]
+gopher.mod = function(args)
+  return require("gopher.go").mod(args)
+end
+
+---@param args string[]
+gopher.work = function(args)
+  return require("gopher.go").work(args)
+end
+
+---@param args string[]
+gopher.generate = function(args)
+  return require("gopher.go").generate(args)
+end
 
 return gopher
diff --git a/lua/gopher/installer.lua b/lua/gopher/installer.lua
index 61e1788..4871e9b 100644
--- a/lua/gopher/installer.lua
+++ b/lua/gopher/installer.lua
@@ -1,7 +1,3 @@
-local c = require "gopher.config"
-local r = require "gopher._utils.runner"
-local u = require "gopher._utils"
-local log = require "gopher._utils.log"
 local installer = {}
 
 local urls = {
@@ -15,6 +11,9 @@ local urls = {
 ---@param opt vim.SystemCompleted
 ---@param url string
 local function handle_intall_exit(opt, url)
+  local u = require "gopher._utils"
+  local log = require "gopher._utils.log"
+
   if opt.code ~= 0 then
     vim.schedule(function()
       u.notify("go install failed: " .. url)
@@ -31,6 +30,10 @@ end
 
 ---@param url string
 local function install(url)
+  local c = require "gopher.config"
+  local r = require "gopher._utils.runner"
+  local u = require "gopher._utils"
+
   vim.schedule(function()
     u.notify("go install-ing: " .. url)
   end)
@@ -42,6 +45,10 @@ end
 
 ---@param url string
 local function install_sync(url)
+  local c = require "gopher.config"
+  local r = require "gopher._utils.runner"
+  local u = require "gopher._utils"
+
   vim.schedule(function()
     u.notify("go install-ing: " .. url)
   end)
diff --git a/lua/gopher/json2go.lua b/lua/gopher/json2go.lua
index 40d0e9f..c92292c 100644
--- a/lua/gopher/json2go.lua
+++ b/lua/gopher/json2go.lua
@@ -13,10 +13,6 @@
 ---    :GoJson {"name": "Alice", "age": 30}
 --- <
 
-local c = require "gopher.config"
-local log = require "gopher._utils.log"
-local u = require "gopher._utils"
-local r = require "gopher._utils.runner"
 local json2go = {}
 
 ---@dochide
@@ -24,6 +20,7 @@ local json2go = {}
 ---@param cpos integer
 ---@param type_ string
 local function apply(bufnr, cpos, type_)
+  local u = require "gopher._utils"
   local lines = vim.api.nvim_buf_get_lines(bufnr, 0, -1, false)
   local input_lines = u.remove_empty_lines(vim.split(type_, "\n"))
   for i, line in pairs(input_lines) do
@@ -37,6 +34,11 @@ end
 ---@param json_str string Json string that is going to be converted to go type.
 ---@return string? Go type, or nil if failed.
 function json2go.transform(json_str)
+  local c = require "gopher.config"
+  local log = require "gopher._utils.log"
+  local u = require "gopher._utils"
+  local r = require "gopher._utils.runner"
+
   local cmd = { c.commands.json2go }
   if c.json2go.type_name then
     table.insert(cmd, "-type", c.json2go.type_name)
@@ -54,6 +56,8 @@ end
 ---@dochide
 ---@param ocpos integer
 local function interactive(ocpos)
+  local c = require "gopher.config"
+
   local obuf = vim.api.nvim_get_current_buf()
   local owin = vim.api.nvim_get_current_win()
 
diff --git a/lua/gopher/struct_tags.lua b/lua/gopher/struct_tags.lua
index 9e7094c..76081a4 100644
--- a/lua/gopher/struct_tags.lua
+++ b/lua/gopher/struct_tags.lua
@@ -35,11 +35,6 @@
 ---    }
 --- <
 
-local ts = require "gopher._utils.ts"
-local r = require "gopher._utils.runner"
-local c = require "gopher.config"
-local u = require "gopher._utils"
-local log = require "gopher._utils.log"
 local struct_tags = {}
 
 ---@dochide
@@ -58,6 +53,12 @@ local struct_tags = {}
 ---@param user_args string[]
 ---@dochide
 local function handle_tags(fpath, bufnr, range, user_args)
+  local c = require "gopher.config"
+  local u = require "gopher._utils"
+  local log = require "gopher._utils.log"
+  local r = require "gopher._utils.runner"
+  local ts = require "gopher._utils.ts"
+
   local st = ts.get_struct_under_cursor(bufnr)
 
   -- stylua: ignore
@@ -134,6 +135,8 @@ end
 ---@param args string[]
 ---@return gopher.StructTagsArgs
 function struct_tags.parse_args(args)
+  local u = require "gopher._utils"
+
   args = unwrap_if_needed(args)
 
   local tags, options = {}, {}
@@ -156,6 +159,9 @@ end
 ---@param opts gopher.StructTagInput
 ---@dochide
 function struct_tags.add(opts)
+  local c = require "gopher.config"
+  local log = require "gopher._utils.log"
+
   log.debug("adding tags", opts)
 
   local fpath = vim.fn.expand "%"
@@ -174,6 +180,9 @@ end
 ---@dochide
 ---@param opts gopher.StructTagInput
 function struct_tags.remove(opts)
+  local c = require "gopher.config"
+  local log = require "gopher._utils.log"
+
   log.debug("removing tags", opts)
 
   local fpath = vim.fn.expand "%"