Sending language server protocol messages via STDIO.

[tecfu]

I want to run vscode-json-languageservice via the terminal, so that I can use it in conjunction with tools like efm-langserver.

Does this application support sending language server protocol messages via STDIO? If so, where is that documentation?
If not, why not?

I should be able to do something like:

npm i -g vscode-json-languageservice
vscode-json-languageservice --f unix --stdin --stdin-filename ${INPUT}

And then I should be able to connect to vscode-jsoncode-languageservcie via any lspclient over STDIO.