JSDoc syntax highlight. Not supported 'Array of Arrays'

[IgorNovozhilov]

• VSCode Version:
  

• OS Version: Linux Mint 18

Steps to Reproduce:

1. Write code:

/* jshint esnext:true */

/**
 * @param {Array<string>} a1
 * @param {Array<Array<string>>} a2
 */
function myFunc(a1, a2) {

}

2. See that:
   

3. Yes, it's correct
   https://github.com/google/closure-compiler/wiki/Types-in-the-Closure-Type-System#types-in-javascript
   

[mjbvz]

Looks like a syntax highlighting issue on our side. Hovering over a2, I see it has the correct string[][] type.

[mjbvz]

This issue was moved to microsoft/TypeScript-TmLanguage#392