VS Code: change letter spacing (kerning)

Question

How do I change the horizontal letter spacing in VS Code?

I'd like to reduce it a little, in other words, I want to change this:

to this:

Answer 1

As of VS Code 1.13, there is an "editor.letterSpacing" setting.

For example, I'm using the following code in my settings to tighten up the letter spacing ever so slightly:

{
    "editor.letterSpacing": -0.15
}