Completion is one character behind in neovim

[kyrisu]

I have installed the plugin together with LanguageClient-neovim and Deoplete, but for some reason I get the following warning (in neovim messages) for multiple files:

[Warning] readFile <full_project_path>/node_modules/react/package.json requested by TypeScript but content not available

Files exist as I can access them by copying & pasting the path into the console.

Any help help would be appreciated - it seems to be something on my machine as I didn't find similar issue on github but looking at traces from the langserver I do not see other warnings or errors.

I'm happy to provide logs / traces but the -t switch doesn't seem to work with stdio version of the server (file pass to -l switch is empty).

[felixfbecker]

Since it's just a warning, does it impact the functionality in any way?

[kyrisu]

In a sample file like this:

import React from 'react';

React.

There's no completion after the dot (I have it set as a trigger, manually triggering the completion also doesn't work). Heres a dump of the requests to the server:

https://gist.github.com/kyrisu/8420bc5d289b530caa4813c656fe64c3

[felixfbecker]

I don't see any textDocument/completion request in those logs

[kyrisu]

You are right - by accident I've cut the logs short :/ After running it few more times and I realize there are times when I don't see these warnings.

After commenting out my deoplete config I got to the point where I'm experiencing the same issue as in #423

Interestingly enough when I type this:

const a = [];
a.

The first time I type the dot I get the proper completion options, then I try to remove it and retype it again and I get the invalid ones.

https://gist.github.com/kyrisu/3797ace47fe2cfa7d32da5685aa73791

(line 630 is when I got the proper completion)

[felixfbecker]

So you're saying you get no completions? Because I don't see a textDocument/completion request in the logs with an empty response

[kyrisu]

I think you might be looking at the first gist - I've created a new one (linked in the previous comment).
I'm getting correct completions initially and then invalid ones (after I triger the completions for the same text).

You can see I get correct completion on line 598 in the logs:

2018-02-20T00:09:51.177908318+00:00 INFO languageclient::languageclient - End textDocument/completion
2018-02-20T00:09:51.178065175+00:00 INFO languageclient::languageclient - End languageClient/omniComplete
2018-02-20T00:09:51.178196892+00:00 INFO languageclient::languageclient - => {"jsonrpc":"2.0","result":[{"abbr":"length","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"m","menu":"","word":"length"},{"abbr":"toString","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"toString"},{"abbr":"toLocaleString","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"toLocaleString"},{"abbr":"push","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"push"},{"abbr":"pop","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"pop"},{"abbr":"concat","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"concat"},{"abbr":"join","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"join"},{"abbr":"reverse","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"reverse"},{"abbr":"shift","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"shift"},{"abbr":"slice","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"slice"},{"abbr":"sort","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"sort"},{"abbr":"splice","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"splice"},{"abbr":"unshift","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"unshift"},{"abbr":"indexOf","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"indexOf"},{"abbr":"lastIndexOf","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"lastIndexOf"},{"abbr":"every","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"every"},{"abbr":"some","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"some"},{"abbr":"forEach","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"forEach"},{"abbr":"map","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"map"},{"abbr":"filter","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"filter"},{"abbr":"reduce","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"reduce"},{"abbr":"reduceRight","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"f","menu":"","word":"reduceRight"},{"abbr":"a","additionalTextEdits":null,"dup":1,"icase":1,"info":"","kind":"","menu":"","word":"a"}],"id":4}
2018-02-20T00:09:51.329984985+00:00 INFO languageclient::languageclient - <= {"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"uri":"file:///home/kyrisu/tmp/cpltest/index.js","diagnostics":[{"range":{"start":{"character":0,"line":0},"end":{"character":0,"line":0}},"message":"Identifier expected.","severity":1,"code":1003,"source":"ts"}]}}

Unfortunately then on line 649 I get random suggestions without context.

[felixfbecker]

Sorry, but I don't know what suggestions you would expect?

According to the last textDocument/didChange in L637:

2018-02-20T00:10:44.541757859+00:00 INFO languageclient::languageclient - => {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"contentChanges":[{"range":null,"rangeLength":null,"text":"const a = [];\na"}],"textDocument":{"uri":"file:///home/kyrisu/tmp/cpltest/index.js","version":14}}}

This is the content of the file:

const a = [];
a

With the cursor being at a, so you get completion for globals like NaN etc.

[felixfbecker]

If that is not the file content you were seeing on screen then that's a bug in the client

[kyrisu]

Maybe it is. I just tried this:

a.

a..

It's like the completion is one character behind.

[kyrisu]

Thank you very much for your help today - I will tinker with this tomorrow and hopefully find what's wrong.

[sQVe]

I'm seeing this too on Vim and it makes it impossible to use the langserver, sadly.

As far as I can tell I only see these issues when the project has a node_modules folder.

[kyrisu]

@sQVe try adding jsconfig.json file to the project directory (example contents)

{
  "compilerOptions": {
    "target": "es2017",
    "checkJs": true,
    "allowSyntheticDefaultImports": true
  },
  "exclude": ["node_modules"]
}

This should force the language server to ignore node_modules if this is the issue in your case.

[sQVe]

@kyrisu That made it somewhat better. It still started complaining about not being able to find external modules though, which I guess is kinda obvious. The #423 issue is problematic too, noting it pretty much everywhere.

[kyrisu]

@sQVe for external modules try npm install @types/<module_name> this helped me (although didn't fix the issue completely unfortunately )

[sQVe]

@kyrisu How does that make a difference? I've installed all dependencies the regular way. I don't really have the freedom to change the whole package.json just got it to work on my machine.