usingDeclarations.10.ts(2,8): error TS1156: 'using' declarations can only be declared inside a block.


==== usingDeclarations.10.ts (1 errors) ====
    declare var x: any;
    if (x) using a = null;
           ~~~~~~~~~~~~~~~
!!! error TS1156: 'using' declarations can only be declared inside a block.
    