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tests/cases/compiler/literals-negative.ts(5,9): error TS2352: Conversion of type 'number' to type 'boolean' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
==== tests/cases/compiler/literals-negative.ts (1 errors) ====
// Type type of the null literal is the Null type.
// Null can be converted to anything except Void
var n = <number>(null);
var s = <string>(null);
var b = <boolean>(n);
~~~~~~~~~~~~
!!! error TS2352: Conversion of type 'number' to type 'boolean' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
function isVoid() : void { }
// Expected error: Values of type null and void cannot be compared
if(null === isVoid()) { }
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