tests/cases/conformance/esnext/logicalAssignment/logicalAssignment4.ts(25,21): error TS2532: Object is possibly 'undefined'.


==== tests/cases/conformance/esnext/logicalAssignment/logicalAssignment4.ts (1 errors) ====
    function foo1(results: number[] | undefined) {
        (results ||= []).push(100);
    }
    
    function foo2(results: number[] | undefined) {
        (results ??= []).push(100);
    }
    
    function foo3(results: number[] | undefined) {
        results ||= [];
        results.push(100);
    }
    
    function foo4(results: number[] | undefined) {
        results ||= [];
        results.push(100);
    }
    
    interface ThingWithOriginal {
        name: string;
        original?: ThingWithOriginal
    }
    function doSomethingWithAlias(thing?: ThingWithOriginal | undefined) {
        if (thing &&= thing.original) {
            console.log(thing.name);
                        ~~~~~
!!! error TS2532: Object is possibly 'undefined'.
        }
    }