update

config/nvim/after/ftplugin/javascriptreact.lua

@@ -0,0 +1,16 @@
+-- Automatically end a self-closing tag when pressing /
+vim.keymap.set("i", "/", function()
+  local node = vim.treesitter.get_node()
+  if not node then
+    return "/"
+  end
+
+  if node:type() == "jsx_opening_element" then
+    local char_at_cursor = vim.fn.strcharpart(vim.fn.strpart(vim.fn.getline("."), vim.fn.col(".") - 2), 0, 1)
+    local already_have_space = char_at_cursor == " "
+
+    return already_have_space and "/>" or " />"
+  end
+
+  return "/"
+end, { expr = true, buffer = true })