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tests/cases/compiler/narrowingTruthyObject.ts(3,9): error TS18047: 'x' is possibly 'null'.
==== tests/cases/compiler/narrowingTruthyObject.ts (1 errors) ====
function foo(x: unknown, b: boolean) {
if (typeof x === 'object') {
x.toString();
~
!!! error TS18047: 'x' is possibly 'null'.
}
if (typeof x === 'object' && x) {
x.toString();
}
if (x && typeof x === 'object') {
x.toString();
}
if (b && x && typeof x === 'object') {
x.toString();
}
if (x && b && typeof x === 'object') {
x.toString();
}
if (x && b && b && typeof x === 'object') {
x.toString();
}
if (b && b && x && b && b && typeof x === 'object') {
x.toString();
}
}
// Repro from #36870
function f1(x: unknown): any {
return x && typeof x === 'object' && x.hasOwnProperty('x');
}
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