[no-use-before-declare] False positive for keyof/typeof parameter types

[JoshuaKGoldberg]

Bug Report

• TSLint version: 5.9.1
• TypeScript version: 2.7.0-dev*
• Running TSLint via: (pick one) CLI / Node.js API / VSCode / grunt-tslint / Atom / Visual Studio / etc

TypeScript code being linted

interface IGroupTypes {
    Scenery: { type: "scenery "},
    Solid: { type: "solid" },
}

function addToGroup(thing: IGroupTypes[typeof groupName], groupName: keyof IGroupTypes): void {
    // ...
}

with tslint.json configuration:

{
    "rules": {
        "no-use-before-declare": true
    }
}

Actual behavior

ERROR: 6:47   no-use-before-declare  variable 'groupName' used before declaration

Expected behavior

There shouldn't be complaints about type parameters, as their types aren't runtime constructs.

[JoshuaKGoldberg]

Marking this as very low priority because no-use-before-declare is no longer a recommended rule. Sorry, @JoshuaKGoldberg from January!

[JoshuaKGoldberg]

This might be re-opened per discussion in #4789.