codeactions-on-save.nvim

A Neovim plugin to register specific code actions to be run automatically on file save, based on file patterns.

Installation

Using lazy.nvim:

{
  "fnune/codeactions-on-save.nvim",
  config = function()
    local cos = require("codeactions-on-save")
    cos.register({ "*.py" }, { "source.organizeImports" })
    cos.register({ "*.ts", "*.tsx" }, { "source.organizeImports.biome", "source.fixAll" })
  end
}

The default timeout for code actions is 100ms. You can pass anything else if necessary, in ms:

cos.register({ "*.ts" }, { "source.organizeImports" }, 3000)

Composing with an existing autocmd

If you already have a BufWritePre autocmd (for formatting, custom logic, etc.) and want to run code actions inline rather than via a separate autocmd, call apply directly:

vim.api.nvim_create_autocmd("BufWritePre", {
  pattern = { "*.ts" },
  callback = function(args)
    require("codeactions-on-save").apply(
      { "source.organizeImports", "source.fixAll" },
      args.buf,
      3000
    )
    -- ... other on-save work
  end,
})

apply(kinds, buf, timeout_ms?) is the same mechanism register uses internally; the timeout defaults to 100ms.

Inspecting code actions

To find out the action kind of the action you want to run, use this while inside a buffer with an LSP client attached:

:lua require("codeactions-on-save").inspect()