local null_ls = require("null-ls") null_ls.setup({ sources = { null_ls.builtins.formatting.black, null_ls.builtins.formatting.isort, null_ls.builtins.formatting.prettier.with({ filetypes = { 'css' } }), null_ls.builtins.diagnostics.eslint, null_ls.builtins.completion.spell, }, }) return {}