feat: notify user on json parsing error for snippets

closes #132

Author: Saghen

lua/blink/cmp/sources/snippets/registry.lua

@@ -46,7 +46,7 @@ function registry:get_snippets_for_ft(filetype)
     for _, f in ipairs(files) do
       local contents = utils.read_file(f)
       if contents then
-        local snippets = vim.json.decode(contents)
+        local snippets = utils.parse_json_with_error_msg(f, contents)
         for _, key in ipairs(vim.tbl_keys(snippets)) do
           local snippet = utils.read_snippet(snippets[key], key)
           for snippet_name, snippet_def in pairs(snippet) do
@@ -58,7 +58,7 @@ function registry:get_snippets_for_ft(filetype)
   else
     local contents = utils.read_file(files)
     if contents then
-      local snippets = vim.json.decode(contents)
+      local snippets = utils.parse_json_with_error_msg(files, contents)
       for _, key in ipairs(vim.tbl_keys(snippets)) do
         local snippet = utils.read_snippet(snippets[key], key)
         for key, snippet in pairs(snippet) do

lua/blink/cmp/sources/snippets/scan.lua

@@ -72,10 +72,10 @@ function scan.load_package_json(path)
   local data = utils.read_file(file)
   if not data then return end
 
-  local pkg = vim.json.decode(data)
+  local pkg = require('blink.cmp.sources.snippets.utils').parse_json_with_error_msg(file, data)
+
   ---@type {path: string, language: string|string[]}[]
   local snippets = vim.tbl_get(pkg, 'contributes', 'snippets')
-
   if not snippets then return end
 
   local ret = {} ---@type table<string, string[]>

lua/blink/cmp/sources/snippets/utils.lua

@@ -1,5 +1,20 @@
 local utils = {}
 
+--- Parses the json file and notifies the user if there's an error
+---@param path string
+---@param json string
+function utils.parse_json_with_error_msg(path, json)
+  local ok, parsed = pcall(vim.json.decode, json)
+  if not ok then
+    vim.notify(
+      'Failed to parse json file "' .. path .. '" for blink.cmp snippets. Error: ' .. parsed,
+      vim.log.levels.ERROR
+    )
+    return {}
+  end
+  return parsed
+end
+
 ---@type fun(path: string): string|nil
 function utils.read_file(path)
   local file = io.open(path, 'r')