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return {
"jose-elias-alvarez/null-ls.nvim", -- configure formatters & linters
event = { "BufReadPre", "BufNewFile" },
config = function()
-- import null-ls plugin
local null_ls = require("null-ls")
local null_ls_utils = require("null-ls.utils")
-- for conciseness
local formatting = null_ls.builtins.formatting -- to setup formatters
local diagnostics = null_ls.builtins.diagnostics -- to setup linters
-- to setup format on save
local augroup = vim.api.nvim_create_augroup("LspFormatting", {})
-- configure null_ls
null_ls.setup({
-- add package.json as identifier for root (for typescript monorepos)
root_dir = null_ls_utils.root_pattern(".null-ls-root", "Makefile", ".git", "package.json"),
-- setup formatters & linters
sources = {
-- to disable file types use
-- "formatting.prettier.with({disabled_filetypes: {}})" (see null-ls docs)
formatting.prettier.with({
extra_filetypes = { "svelte" },
}), -- js/ts formatter
formatting.stylua, -- lua formatter
diagnostics.eslint_d.with({ -- js/ts linter
condition = function(utils)
return utils.root_has_file({ ".eslintrc.js", ".eslintrc.cjs" }) -- only enable if root has .eslintrc.js or .eslintrc.cjs
end,
}),
},
-- configure format on save
on_attach = function(current_client, bufnr)
if current_client.supports_method("textDocument/formatting") then
vim.api.nvim_clear_autocmds({ group = augroup, buffer = bufnr })
vim.api.nvim_create_autocmd("BufWritePre", {
group = augroup,
buffer = bufnr,
callback = function()
vim.lsp.buf.format({
filter = function(client)
-- only use null-ls for formatting instead of lsp server
return client.name == "null-ls"
end,
bufnr = bufnr,
})
end,
})
end
end,
})
end,
}
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