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if exists('g:loaded_node_provider')
finish
endif
let g:loaded_node_provider = 1
let s:job_opts = {'rpc': v:true, 'stderr_buffered': v:true}
function! s:is_minimum_version(version, min_major, min_minor) abort
if empty(a:version)
let nodejs_version = get(split(system(['node', '-v']), "\n"), 0, '')
if v:shell_error || nodejs_version[0] !=# 'v'
return 0
endif
else
let nodejs_version = a:version
endif
" Remove surrounding junk. Example: 'v4.12.0' => '4.12.0'
let nodejs_version = matchstr(nodejs_version, '\(\d\.\?\)\+')
" [major, minor, patch]
let v_list = split(nodejs_version, '\.')
return len(v_list) == 3
\ && ((str2nr(v_list[0]) > str2nr(a:min_major))
\ || (str2nr(v_list[0]) == str2nr(a:min_major)
\ && str2nr(v_list[1]) >= str2nr(a:min_minor)))
endfunction
" Support for --inspect-brk requires node 6.12+ or 7.6+ or 8+
" Return 1 if it is supported
" Return 0 otherwise
function! provider#node#can_inspect() abort
if !executable('node')
return 0
endif
let ver = get(split(system(['node', '-v']), "\n"), 0, '')
if v:shell_error || ver[0] !=# 'v'
return 0
endif
return (ver[1] ==# '6' && s:is_minimum_version(ver, 6, 12))
\ || s:is_minimum_version(ver, 7, 6)
endfunction
function! provider#node#Detect() abort
let global_modules = get(split(system('npm root -g'), "\n"), 0, '')
if v:shell_error || !isdirectory(global_modules)
return ''
endif
if !s:is_minimum_version(v:null, 6, 0)
return ''
endif
let entry_point = glob(global_modules . '/neovim/bin/cli.js')
if !filereadable(entry_point)
return ''
endif
return entry_point
endfunction
function! provider#node#Prog() abort
return s:prog
endfunction
function! provider#node#Require(host) abort
if s:err != ''
echoerr s:err
return
endif
let args = ['node']
if !empty($NVIM_NODE_HOST_DEBUG) && provider#node#can_inspect()
call add(args, '--inspect-brk')
endif
call add(args, provider#node#Prog())
try
let job = copy(s:job_opts)
let channel_id = jobstart(args, job)
if rpcrequest(channel_id, 'poll') ==# 'ok'
return channel_id
endif
catch
echomsg v:throwpoint
echomsg v:exception
for row in job.stderr
echomsg row
endfor
endtry
endtry
throw remote#host#LoadErrorForHost(a:host.orig_name, '$NVIM_NODE_LOG_FILE')
endfunction
function! provider#node#Call(method, args) abort
if s:err != ''
echoerr s:err
return
endif
if !exists('s:host')
try
let s:host = remote#host#Require('node')
catch
let s:err = v:exception
echohl WarningMsg
echomsg v:exception
echohl None
return
endtry
endif
return call('rpcrequest', insert(insert(a:args, 'node_'.a:method), s:host))
endfunction
let s:err = ''
let s:prog = provider#node#Detect()
if empty(s:prog)
let s:err = 'Cannot find the "neovim" node package. Try :checkhealth'
endif
call remote#host#RegisterPlugin('node-provider', 'node', [])
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