Visual Studio Code Intellisense not working for Javascript

Question

I am using Visual Studio Code (VSC) 0.10.11 on Windows and Mac. For the purpose of this question I have this small JavaScript snippet:

'use strict';

const os = require('os');
console.log(os.homedir());

I followed John Papa on Visual Studio Code (Blog entry and Pluralsight Visual Studio Code JavaScript Intellisense - for those who have an account) and therefore I would expect that VSC provides Intellisense and Quick fix options when typings are available.

In the snippet above VSC recognizes console and log() (I use hoover, but it is the same with Intellisense):

but not os and homedir():

But all 4 typings are available in typings/main/ambient/node/index.d.ts. I know that the difference is the require in the case of os, but in John Papa's video course VSC also provided IntelliSense for required modules. A difference is that John Papa used tsd while I am using typings.

So my questions are

• how can I enable Intellisense for all known typings?
• what do I have to do that VSC offers me Quick fix (green line under moduls with missing typings)?

Solution 1

The above links are outdated. In older versions of VS Code you needed to reference your typings like /// <reference path> for somelibrary.d.ts.

With new version you need to initialize your project by creating jsconfig.json at the root of your project and add the following inside:

{
    "compilerOptions": {
        "target": "es5",
        "module": "commonjs"
    },
    "exclude": [
      "node_modules"
    ]
}

Next install typing you need. You can use either tsd or typings. In your case you need to install tsd install node or typings install node --ambient. Make sure you have typings/tsd installed. Restart project.

Please refer to docs:

1. Setup JS project - https://code.visualstudio.com/docs/languages/javascript
2. Node.js - https://code.visualstudio.com/docs/runtimes/nodejs
3. Debugging - https://code.visualstudio.com/docs/editor/debugging

Update:

Since version 1.7 there is no need to manually install typings, they should be downloaded automatically. Better JavaScript IntelliSense

Solution 2

There is a built-in extension called TypeScript and JavaScript Language Features (vscode.typescript-language-features) that is disabled.

In order to enable it, open Extensions panel, search for "@built-in JavaScript", and enable the required extension.

Now you should be able to use the autocomplete feature.

Solution 3

I experienced this on global "process" object. Vscode enabled intellisense for process object, only if I add any "require" statements to the file.

So if there is not any other require statements, you can add

const process = require('process');

in the beginning of your script to get intellisense.