tests/cases/conformance/controlFlow/controlFlowTypeofObject.ts(66,13): error TS2345: Argument of type 'object | null' is not assignable to parameter of type 'object'.
  Type 'null' is not assignable to type 'object'.


==== tests/cases/conformance/controlFlow/controlFlowTypeofObject.ts (1 errors) ====
    declare function obj(x: object): void;
    
    function f1(x: unknown) {
        if (!x) {
            return;
        }
        if (typeof x === 'object') {
            obj(x);
        }
    }
    
    function f2(x: unknown) {
        if (x === null) {
            return;
        }
        if (typeof x === 'object') {
            obj(x);
        }
    }
    
    function f3(x: unknown) {
        if (x == null) {
            return;
        }
        if (typeof x === 'object') {
            obj(x);
        }
    }
    
    function f4(x: unknown) {
        if (x == undefined) {
            return;
        }
        if (typeof x === 'object') {
            obj(x);
        }
    }
    
    function f5(x: unknown) {
        if (!!true) {
            if (!x) {
                return;
            }
        }
        else {
            if (x === null) {
                return;
            }
        }
        if (typeof x === 'object') {
            obj(x);
        }
    }
    
    function f6(x: unknown) {
        if (x === null) {
            x;
        }
        else {
            x;
            if (typeof x === 'object') {
                obj(x);
            }
        }
        if (typeof x === 'object') {
            obj(x);  // Error
                ~
!!! error TS2345: Argument of type 'object | null' is not assignable to parameter of type 'object'.
!!! error TS2345:   Type 'null' is not assignable to type 'object'.
        }
    }