Format & lint

  • There are many plugins for this , I will use null-ls.nvim in this example!

Install null-ls

  1.  ["jose-elias-alvarez/null-ls.nvim"] = {
  2.       after = "nvim-lspconfig",
  3.       config = function()
  4.          require("custom.plugins.null-ls").setup()
  5.       end,
  6.  }
  8. -- load it after nvim-lspconfig cuz we lazy loaded lspconfig

Null-ls config

  • NOTE : The below config is my personal one! So use it as a reference or check null-ls docs
  1. local null_ls = require "null-ls"
  2. local b = null_ls.builtins
  4. local sources = {
  6.    b.formatting.prettierd.with { filetypes = { "html", "markdown", "css" } },
  7.    b.formatting.deno_fmt,
  9.    -- Lua
  10.    b.formatting.stylua,
  11.    b.diagnostics.luacheck.with { extra_args = { "--global vim" } },
  13.    -- Shell
  14.    b.formatting.shfmt,
  15.    b.diagnostics.shellcheck.with { diagnostics_format = "#{m} [#{c}]" },
  16. }
  18. local M = {}
  20. M.setup = function()
  21.    null_ls.setup {
  22.       debug = true,
  23.       sources = sources,
  25.       -- format on save
  26.       on_attach = function(client)
  27.          if client.resolved_capabilities.document_formatting then
  28.             vim.cmd "autocmd BufWritePre <buffer> lua vim.lsp.buf.formatting_sync()"
  29.          end
  30.       end,
  31.    }
  32. end
  34. return M
  • Format code : <leader> + fm
  • Check null-ls builtins to get config for your language!
  • Also note that in the above example I’ve added some config of linters and formatters in null-ls config, so those programs must be installed on my system as well! Like prettierd, stylua, shfmt, eslint_d etc.