`const` keyword not recognized using Lua 5.4 runtime

[arkt8]

Using version 3.2.2 of lua-language-server, it hints const as a variable, not as a keyword.

require("lsp-config").setup("sumneko_lua", {
    settings = {
      rootPatterns = {".git/"},
      Lua = {
        runtime = {
          version = 'Lua 5.4',
          path = {
            '?.lua',
            '?/init.lua',
            vim.fn.expand'~/.luarocks/share/lua/5.4/?.lua',
            vim.fn.expand'~/.luarocks/share/lua/5.4/?/init.lua',
            '/usr/share/5.4/?.lua',
            '/usr/share/lua/5.4/?/init.lua'
          }
        },
        diagnostics = {
            enable  = true,
            globals = {"vim"},
            disable = {"lowercase-global"}
        },
        workspace = {
          library = {
            vim.fn.expand'~/.luarocks/share/lua/5.4',
            '/usr/share/lua/5.4'
          }
        },
        telemetry = {
          enable = false
        }
      }
    }
  })

[sumneko]

Should be local x <const> = 10

[arkt8]

Sorry... just opened editor and started setting it to work with Lua 5.4; as the code ran without complain, I don't minded the error syntax

function lala()
   local x <const> = 10
   print(x)
end

function lele()
  local const x = 10
  print(x)
end

lala()
lele()

[sumneko]

Sorry... just opened editor and started setting it to work with Lua 5.4; as the code ran without complain, I don't minded the error syntax

function lala()
   local x <const> = 10
   print(x)
end

function lele()
  local const x = 10
  print(x)
end

lala()
lele()

What, I have tested this and found it is correct syntax.
I just not know before, I will check the document of Lua 5.4.

EDIT: I just realize local const x = 10 is interpreted as local const; x = 10, my bad.