Configuration file loading

[maobai405]

In my config file I configured this:

      formatters = {
        injected = { options = { ignore_errors = true } },
        prettier = {
          prepend_args = { "--config= .. vim.fn.expand "~/.config/nvim/prettierrc.json" },
        },
        biome = {
          prepend_args = { "format", "--config-path=" .. vim.fn.expand "~/.config/nvim" },
        },
      },

However, I expected that if there's a prettierrc.json file in my project directory, it will be formatted according to the configuration in the project, instead of the configuration in the prepend_args path. How can I achieve this?

[rodhash]

Hi @maobai405, any luck with this?

[stevearc]

You can define prepend_args as a function

prepend_args = function(self, ctx)
  local util = require("conform.util")
  -- you may want to include all the possible config file names
  -- see https://github.com/stevearc/conform.nvim/blob/46c107ad0e7d83b5a7091112ec2994c847577d32/lua/conform/formatters/prettier.lua#L64-L77
  local config_file = vim.fs.find({".prettierrc", "prettierrc.json"}, { upward = true, path = ctx.dirname })[1]
  if config_file then
    return {} -- don't need to return anything because it will pick up the file from the cwd
  else
    return { "--config=" .. vim.fn.expand("~/.config/nvim/prettierrc.json") }
  end
end

[yamiteru]

What if I want to use biome only if there's biome.json in the directory?

[stevearc]

@yamiteru set require_cwd = true for the biome formatter. Then the formatter will only be used when the cwd function returns a value.