return {
  {
    "stevearc/conform.nvim",
    optional = true,
    opts = {
      formatters = {
        ["markdown-toc"] = {
          condition = function(_, ctx)
            for _, line in ipairs(vim.api.nvim_buf_get_lines(ctx.buf, 0, -1, false)) do
              if line:find("<!%-%- toc %-%->") then
                return true
              end
            end
          end,
        },
        ["markdownlint-cli2"] = {
          condition = function(_, ctx)
            local diag = vim.tbl_filter(function(d)
              return d.source == "markdownlint"
            end, vim.diagnostic.get(ctx.buf))
            return #diag > 0
          end,
        },
        prettier = {
          prepend_args = { "--prose-wrap", "preserve" },
        },
      },
      formatters_by_ft = {
        ["markdown"] = { "prettier", "markdownlint-cli2", "markdown-toc" },
        ["markdown.mdx"] = { "prettier", "markdownlint-cli2", "markdown-toc" },
      },
    },
  },
  {
    "williamboman/mason.nvim",
    opts = { ensure_installed = { "markdownlint-cli2", "markdown-toc" } },
  },
}