fix: handle filetypes without TS queries

README.md

@@ -1,6 +1,6 @@
 # null-ls-embedded
 
-Plugin for formatting embedded code using [null-ls](https://github.com/jose-elias-alvarez/null-ls.nvim) in NeoVim.
+Plugin for formatting embedded(injected) code (e.g. `lua` in `markdown`)using [null-ls](https://github.com/jose-elias-alvarez/null-ls.nvim) in NeoVim.
 Embedded languages are found using `injections.csm` treesitter queries from [nvim-treesitter](https://github.com/nvim-treesitter/nvim-treesitter),
 so if the highlighting works, the formatting should as well.
 
@@ -41,10 +41,22 @@ require("null-ls").setup({
 })
 ```
 
+The null-ls source is enabled only for some filetypes by default, to configure them use this:
+
+```lua
+require("null-ls").setup({
+  sources = {
+    require("null-ls-embedded").nls_source.with({
+      -- default filetypes:
+      filetypes = { "markdown", "html", "vue", "lua" },
+    }),
+  },
+})
+```
+
 Format by calling `vim.lsp.buf.format`.
 Range formatting is supported with this method (as long as the formatter will format the selected range).
 
-
 ### By calling functions
 
 - `require("null-ls-embedded").buf_format()` - format every code block in the buffer
@@ -54,6 +66,7 @@ Range formatting is supported with this method (as long as the formatter will fo
 
 ```lua
 local config = {
+  -- don't format these injected languages
   ignore_langs = {
     ["*"] = { "comment" }, -- ignore `comment` in all languages
     markdown = { "markdown_inline" }, -- ignore `markdown_inline` in `markdown`

lua/null-ls-embedded/utils.lua

@@ -195,6 +195,10 @@ end
 function M.get_ts_injection_nodes(bufnr)
   local root_lang = vim.api.nvim_buf_get_option(bufnr, "filetype")
   local query = require("nvim-treesitter.query").get_query(root_lang, "injections")
+  if not query then
+    require("null-ls.logger"):warn("[null-ls-embedded] Couldn't find TS queries for " .. root_lang)
+    return {}
+  end
 
   local root = vim.treesitter.get_parser(bufnr):parse()[1]:root()
 
@@ -211,7 +215,7 @@ function M.get_ts_injection_nodes(bufnr)
       local name = query.captures[id]
 
       if name == "language" and not lang then
-        lang = vim.treesitter.query.get_node_text(node, bufnr)
+        lang = vim.treesitter.get_node_text(node, bufnr)
       elseif name == "content" and #nodes == 0 then
         table.insert(nodes, node)
       elseif string.sub(name, 1, 1) ~= "_" then