A simple language server for JavaScript, powered by ESLint and Tern.
I made this because sourcegraph/javascript-typescript-langserver is really bad at untyped JavaScript. It uses the intellisense library that's part of TypeScript as a backend, which makes it really good at TypeScript (probably, I've never used it for TypeScript) but much worse than Tern at regular JavaScript.
I'm a vim user, so I just do this:
let g:LanguageClient_serverCommands = {
\ 'javascript.jsx': ['js-langserver', '--stdio'],
\ }
If you want to use VSCode, I think you're going to have to fork the project and add a 20-line VSCode extension. Not really sure how VSCode works.
| js-langserver | javascript-typescript-langserver | vscode-eslint | vscode-ternjs | |
|---|---|---|---|---|
| Lines of code (according to tokei) | 153 | 8,618 | 1,787 | 326 |
| GitHub stars |  |
 |
 |
 |
| Tern | ✅ | ❌ | ❌ | yes, but no completions (???) |
| ESLint | ✅ | ❌ | ✅ | ❌ |
VSCode's builtin JavaScript support is not in here because I can't figure out how to use it with vim. vscode-ternjs is here despite having 1 GitHub star because it is literally the only language server I could find that used Tern.