fix: set correct file extension for unsaved buffer temp files (#440)

the extension used to be always the file type, be smarter now. For
instance prettier wouldn't recognize a `.typescript` extension.

1 files changed, 13 insertions, 0 deletions

diff --git a/lua/conform/ft_to_ext.lua b/lua/conform/ft_to_ext.lua
new file mode 100644
index 0000000..7c6e195
--- /dev/null
+++ b/lua/conform/ft_to_ext.lua
@@ -0,0 +1,13 @@
+return {
+  elixir = "ex",
+  graphql = "gql",
+  javascript = "js",
+  javascriptreact = "jsx",
+  markdown = "md",
+  perl = "pl",
+  python = "py",
+  ruby = "rb",
+  rust = "rs",
+  typescript = "ts",
+  typescriptreact = "tsx",
+}