Delete operation is erroring with "attempt to index 'left' a nil value"

[westernwontons]

I have the following surround action set up for Rust:

require("nvim-surround").buffer_setup {
    surrounds = {
        ["g"] = {
            add = function()
                local config = require "nvim-surround.config"
                local result = config.get_input "Enter the type name: "
                if result ~= nil then return { { result .. "<" }, { ">" } } end
                return nil
            end,
            find = function()
                local config = require "nvim-surround.config"
                return config.get_selection { node = "generic_type" }
            end,
            delete = "^(.-<)().-(>)()$",
        },
}

This has been working up until a925c03, which adds a change to use the native vim.treesitter module when available. I'm not entirely sure what is causing this error and I would like to ask for a little assistance.

Thanks!

[kylechui]

Hmm I don't see anything that immediately looks like it could be the issue. What version of Neovim are you running, and can you verify the earliest commit that it doesn't work on/the latest commit that it does work on?