=== tests/cases/compiler/objectLiteralArraySpecialization.ts === declare function create(initialValues?: T[]): MyArrayWrapper; >create : (initialValues?: T[]) => MyArrayWrapper, Symbol(create, Decl(objectLiteralArraySpecialization.ts, 0, 0)) >T : T, Symbol(T, Decl(objectLiteralArraySpecialization.ts, 0, 24)) >initialValues : T[], Symbol(initialValues, Decl(objectLiteralArraySpecialization.ts, 0, 27)) >T : T, Symbol(T, Decl(objectLiteralArraySpecialization.ts, 0, 24)) >MyArrayWrapper : MyArrayWrapper, Symbol(MyArrayWrapper, Decl(objectLiteralArraySpecialization.ts, 0, 67)) >T : T, Symbol(T, Decl(objectLiteralArraySpecialization.ts, 0, 24)) interface MyArrayWrapper { >MyArrayWrapper : MyArrayWrapper, Symbol(MyArrayWrapper, Decl(objectLiteralArraySpecialization.ts, 0, 67)) >T : T, Symbol(T, Decl(objectLiteralArraySpecialization.ts, 1, 25)) constructor(initialItems?: T[]); >constructor : (initialItems?: T[]) => any, Symbol(constructor, Decl(objectLiteralArraySpecialization.ts, 1, 29)) >initialItems : T[], Symbol(initialItems, Decl(objectLiteralArraySpecialization.ts, 2, 13)) >T : T, Symbol(T, Decl(objectLiteralArraySpecialization.ts, 1, 25)) doSomething(predicate: (x: T, y: T) => boolean): void; >doSomething : (predicate: (x: T, y: T) => boolean) => void, Symbol(doSomething, Decl(objectLiteralArraySpecialization.ts, 2, 33)) >predicate : (x: T, y: T) => boolean, Symbol(predicate, Decl(objectLiteralArraySpecialization.ts, 3, 13)) >x : T, Symbol(x, Decl(objectLiteralArraySpecialization.ts, 3, 25)) >T : T, Symbol(T, Decl(objectLiteralArraySpecialization.ts, 1, 25)) >y : T, Symbol(y, Decl(objectLiteralArraySpecialization.ts, 3, 30)) >T : T, Symbol(T, Decl(objectLiteralArraySpecialization.ts, 1, 25)) } var thing = create([ { name: "bob", id: 24 }, { name: "doug", id: 32 } ]); // should not error >thing : MyArrayWrapper<{ name: string; id: number; }>, Symbol(thing, Decl(objectLiteralArraySpecialization.ts, 5, 3)) >create([ { name: "bob", id: 24 }, { name: "doug", id: 32 } ]) : MyArrayWrapper<{ name: string; id: number; }> >create : (initialValues?: T[]) => MyArrayWrapper, Symbol(create, Decl(objectLiteralArraySpecialization.ts, 0, 0)) >[ { name: "bob", id: 24 }, { name: "doug", id: 32 } ] : { name: string; id: number; }[] >{ name: "bob", id: 24 } : { name: string; id: number; } >name : string, Symbol(name, Decl(objectLiteralArraySpecialization.ts, 5, 22)) >"bob" : string >id : number, Symbol(id, Decl(objectLiteralArraySpecialization.ts, 5, 35)) >24 : number >{ name: "doug", id: 32 } : { name: string; id: number; } >name : string, Symbol(name, Decl(objectLiteralArraySpecialization.ts, 5, 47)) >"doug" : string >id : number, Symbol(id, Decl(objectLiteralArraySpecialization.ts, 5, 61)) >32 : number thing.doSomething((x, y) => x.name === "bob"); // should not error >thing.doSomething((x, y) => x.name === "bob") : void >thing.doSomething : (predicate: (x: { name: string; id: number; }, y: { name: string; id: number; }) => boolean) => void, Symbol(MyArrayWrapper.doSomething, Decl(objectLiteralArraySpecialization.ts, 2, 33)) >thing : MyArrayWrapper<{ name: string; id: number; }>, Symbol(thing, Decl(objectLiteralArraySpecialization.ts, 5, 3)) >doSomething : (predicate: (x: { name: string; id: number; }, y: { name: string; id: number; }) => boolean) => void, Symbol(MyArrayWrapper.doSomething, Decl(objectLiteralArraySpecialization.ts, 2, 33)) >(x, y) => x.name === "bob" : (x: { name: string; id: number; }, y: { name: string; id: number; }) => boolean >x : { name: string; id: number; }, Symbol(x, Decl(objectLiteralArraySpecialization.ts, 6, 19)) >y : { name: string; id: number; }, Symbol(y, Decl(objectLiteralArraySpecialization.ts, 6, 21)) >x.name === "bob" : boolean >x.name : string, Symbol(name, Decl(objectLiteralArraySpecialization.ts, 5, 22)) >x : { name: string; id: number; }, Symbol(x, Decl(objectLiteralArraySpecialization.ts, 6, 19)) >name : string, Symbol(name, Decl(objectLiteralArraySpecialization.ts, 5, 22)) >"bob" : string