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tests/cases/conformance/types/primitives/boolean/assignFromBooleanInterface2.ts(14,1): error TS2322: Type 'NotBoolean' is not assignable to type 'Boolean'.
The types returned by 'valueOf()' are incompatible between these types.
Type 'Object' is not assignable to type 'boolean'.
tests/cases/conformance/types/primitives/boolean/assignFromBooleanInterface2.ts(19,1): error TS2322: Type 'Boolean' is not assignable to type 'boolean'.
'boolean' is a primitive, but 'Boolean' is a wrapper object. Prefer using 'boolean' when possible.
tests/cases/conformance/types/primitives/boolean/assignFromBooleanInterface2.ts(20,1): error TS2322: Type 'NotBoolean' is not assignable to type 'boolean'.
==== tests/cases/conformance/types/primitives/boolean/assignFromBooleanInterface2.ts (3 errors) ====
interface Boolean {
doStuff(): string;
}
interface NotBoolean {
doStuff(): string;
}
var x = true;
var a: Boolean;
var b: NotBoolean;
a = x;
a = b;
~
!!! error TS2322: Type 'NotBoolean' is not assignable to type 'Boolean'.
!!! error TS2322: The types returned by 'valueOf()' are incompatible between these types.
!!! error TS2322: Type 'Object' is not assignable to type 'boolean'.
b = a;
b = x;
x = a; // expected error
~
!!! error TS2322: Type 'Boolean' is not assignable to type 'boolean'.
!!! error TS2322: 'boolean' is a primitive, but 'Boolean' is a wrapper object. Prefer using 'boolean' when possible.
x = b; // expected error
~
!!! error TS2322: Type 'NotBoolean' is not assignable to type 'boolean'.
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