---@brief --- --- Language server for programs written in Hack --- https://hhvm.com/ --- https://github.com/facebook/hhvm --- See below for how to setup HHVM & typechecker: --- https://docs.hhvm.com/hhvm/getting-started/getting-started ---@type vim.lsp.Config return { cmd = { 'hh_client', 'lsp' }, filetypes = { 'php', 'hack' }, root_markers = { '.hhconfig' }, }