/index.ts(2,1): error TS2454: Variable 'x' is used before being assigned.


==== /tsconfig.json (0 errors) ====
    {
        "extends": "foo/strict.json"
    }
    
==== /node_modules/foo/package.json (0 errors) ====
    {
        "name": "foo",
        "version": "1.0.0",
        "exports": {
            "./*.json": "./configs/*.json"
        }
    }
    
==== /node_modules/foo/configs/strict.json (0 errors) ====
    {
        "compilerOptions": {
            "strict": true
        }
    }
    
==== /index.ts (1 errors) ====
    let x: string;
    x.toLowerCase();
    ~
!!! error TS2454: Variable 'x' is used before being assigned.
    