Adding lua snip to lsp-cmp

after/plugin/lsp.lua

@@ -64,12 +64,19 @@ require('mason-lspconfig').setup({
 
 local cmp = require('cmp')
 local cmp_select = {behavior = cmp.SelectBehavior.Select}
+local luasnip= require('luasnip')
 
 cmp.setup({
+    snippet = {
+        expand = function(args)
+            luasnip.lsp_expand(args.body)
+        end
+    },
     sources = {
         {name = 'path'},
         {name = 'nvim_lsp'},
         {name = 'nvim_lua'},
+        {name = 'luasnip'},
     },
     mapping = cmp.mapping.preset.insert({
         ['<C-p>'] = cmp.mapping.select_prev_item(cmp_select),