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function foo(bar:{a:number;}[]):string;
function foo(bar:{a:boolean;}[]):number;
function foo(bar:{a:any;}[]):any{ return bar };
var x1 = foo([{a:true}]); // works
var x11 = foo([{a:0}]); // works
var x111 = foo([{a:"s"}]); // error - does not match any signature
var x1111 = foo([{a:null}]); // works - ambiguous call is resolved to be the first in the overload set so this returns a string
function foo2(bar:{a:number;}):string;
function foo2(bar:{a:boolean;}):number;
function foo2(bar:{a:any;}):any{ return bar };
var x2 = foo2({a:0}); // works
var x3 = foo2({a:true}); // works
var x4 = foo2({a:"s"}); // error
function foo4(bar:{a:number;}):number;
function foo4(bar:{a:string;}):string;
function foo4(bar:{a:any;}):any{ return bar };
var x = foo4({a:true}); // error
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