nvim/lua/config/format.lua

require('nvim-format-buffer').setup({
  verbose = false,
  format_rules = {
    { pattern = { '*.c', '*.h' }, command = 'clang-format' },
    { pattern = { '*.py', '*.pyi' }, command = 'black -q --stdin-filename % - 2>/dev/null | isort -q - 2>/dev/null' },
    {
      pattern = { '*.js', '*.ts', '*.tsx', '*.vue', '*.css' },
      command = function()
        return 'prettier --stdin-filepath ' .. vim.api.nvim_buf_get_name(0)
      end,
    },
  },
})