nvim-config/lua/configs/formatter.lua

local function config()
	local formatter = require('formatter')

	local prettierd = require('formatter.defaults.prettierd')
	local fmt_lua = require('formatter.filetypes.lua')
	local fmt_json = require('formatter.filetypes.json')
	local fmt_python = require('formatter.filetypes.python')

	formatter.setup({
		filetype = {
			-- sudo pacman -S stylua
			-- https://github.com/JohnnyMorganz/StyLua/releases
			lua = { fmt_lua.stylua },
			-- pip install isort black ruff
			python = {
				fmt_python.isort,
				function()
					-- use `black` or `ruff` based on the project dir
					local cwd = vim.fn.getcwd()
					-- substr the cwd starting at the last "/" character
					local cwd_name = string.sub(cwd, -cwd:reverse():find('/') + 1)
					local style = {
						['invsys'] = fmt_python.black,
						['invsys-b'] = fmt_python.black,
						['invsys-c'] = fmt_python.black,
						['cubix'] = fmt_python.ruff,
						['slots'] = fmt_python.ruff,
					}
					return style[cwd_name] or nil
				end,
			},
			-- sudo npm i -g fixjson
			json = { fmt_json.fixjson },
			-- npm i prettierd
			typescript = { prettierd },
			typescriptreact = { prettierd },
			scss = { prettierd },
		},
	})

	-- format on write
	vim.api.nvim_create_augroup('__formatter__', { clear = true })
	vim.api.nvim_create_autocmd('BufWritePost', {
		group = '__formatter__',
		command = ':FormatWrite',
	})
end

return config