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=== tests/cases/conformance/types/typeRelationships/comparable/optionalProperties01.ts ===
interface Foo {
required1: string;
>required1 : string
required2: string;
>required2 : string
optional?: string;
>optional : string | undefined
}
const foo1 = { required1: "hello" } as Foo;
>foo1 : Foo
>{ required1: "hello" } as Foo : Foo
>{ required1: "hello" } : { required1: string; }
>required1 : string
>"hello" : "hello"
const foo2 = { required1: "hello", optional: "bar" } as Foo;
>foo2 : Foo
>{ required1: "hello", optional: "bar" } as Foo : Foo
>{ required1: "hello", optional: "bar" } : { required1: string; optional: string; }
>required1 : string
>"hello" : "hello"
>optional : string
>"bar" : "bar"
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