The keys in the options argument to ReferenceTracker should be optional

[MageJohn]

• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I have read the FAQ and my problem is not listed.

Repro

import { ASTUtils } from "@typescript-eslint/experimental-utils";
const { ReferenceTracker } = ASTUtils;

const tracker1 = new ReferenceTracker(context.getScope(), {});
const tracker2 = new ReferenceTracker(context.getScope(), {
  mode: "legacy"
});
const tracker3 = new ReferenceTracker(context.getScope(), {
  globalObjectNames: ["global", "globalThis", "self", "window"]
});

Expected Result

All the ReferenceTracker constructions above are should be valid, with no type errors.

Actual Result

Each of them produces a type error. For example, tracker1 produces this:

Argument of type '{}' is not assignable to parameter of type '{ mode: "strict" | "legacy"; globalObjectNames: readonly string[]; }'.
  Type '{}' is missing the following properties from type '{ mode: "strict" | "legacy"; globalObjectNames: readonly string[]; }': mode, globalObjectNames

Additional Info

The options object for ReferenceTracker should have all it's keys as optional. The implementation from eslint-utils looks like this:

constructor(
    globalScope,
    {
        mode = "strict",
        globalObjectNames = ["global", "globalThis", "self", "window"],
    } = {},
) {
  // ...
}

Versions

package	version
@typescript-eslint/experimental-utils	4.26.1
TypeScript	4.3.2
node	12.22.0

[bradzacher]

Happy to accept a PR.
With this sort of thing it's usually better and faster to just raise a PR with context in the description rather than raising an issue first.

[MageJohn]

Cool, on it now!