:LspStatus returns typescript-language-server: not running

[OurCodeBase]

Why :LspStatus returns typescript-language-server: not running ?
Please show me how to run typescript-language-server in neovim.

$ vi helloworld.js
:PlugInstall
:LspInstallServer
:LspStatus
typescript-language-server: not running

I have read closed issue #547 and included these lines to init.vim file:-

let g:lsp_diagnostics_echo_cursor = 1
let g:lsp_settings = {
\ 'efm-langserver': {
\   'disabled': v:false
\ },
\ }

autocmd BufWritePre *.js,*.jsx call execute('LspDocumentFormatSync --server=efm-langserver')

But the error still appears the same...

[mattn]

Question:

• Do it have deno.json exists on root of your project directory?
• Do it have node_modules on root of your project directory?

[OurCodeBase]

No, I'm using tsserver on a standalone script.js file. Expecting auto-completions on atleast console.log().