Before You File a Bug Report Please Confirm You Have Done The Following...

• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I have searched for related issues and found none that matched my issue.
• I have read the FAQ and my problem is not listed.

Playground Link

link

Repro Code

declare const a: string | null;
declare const b: string | null;

declare function f(x: unknown): unknown;

// correctly reports
f(a || b);

// should but doesn't report
if (f(a || b)) {}

ESLint Config

module.exports = {
  "rules": {
    "@typescript-eslint/prefer-nullish-coalescing": [
      "warn",
      {
        "ignoreConditionalTests": true
      }
    ]
  }
}

tsconfig

{
  "compilerOptions": {
    "strictNullChecks": true
  }
}

Expected Result

I expect that if (f(a || b)) {} should report, since a || b is being used as a function argument, not the test of an if statement.

Actual Result

it doesn't report

Additional Info

Just popping this up as a standalone issue for visibility/tracking. It will likely be addressed in #9924 (comment)

cc @developer-bandi