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=== tests/cases/conformance/types/spread/spreadDuplicate.ts ===
// Repro from #44438
declare let a: { a: string };
>a : Symbol(a, Decl(spreadDuplicate.ts, 2, 11))
>a : Symbol(a, Decl(spreadDuplicate.ts, 2, 16))
declare let b: { a?: string };
>b : Symbol(b, Decl(spreadDuplicate.ts, 3, 11))
>a : Symbol(a, Decl(spreadDuplicate.ts, 3, 16))
declare let c: { a: string | undefined };
>c : Symbol(c, Decl(spreadDuplicate.ts, 4, 11))
>a : Symbol(a, Decl(spreadDuplicate.ts, 4, 16))
declare let d: { a?: string | undefined };
>d : Symbol(d, Decl(spreadDuplicate.ts, 5, 11))
>a : Symbol(a, Decl(spreadDuplicate.ts, 5, 16))
declare let t: boolean;
>t : Symbol(t, Decl(spreadDuplicate.ts, 7, 11))
let a1 = { a: 123, ...a }; // string (Error)
>a1 : Symbol(a1, Decl(spreadDuplicate.ts, 9, 3))
>a : Symbol(a, Decl(spreadDuplicate.ts, 9, 10))
>a : Symbol(a, Decl(spreadDuplicate.ts, 2, 11))
let b1 = { a: 123, ...b }; // string | number
>b1 : Symbol(b1, Decl(spreadDuplicate.ts, 10, 3))
>a : Symbol(a, Decl(spreadDuplicate.ts, 10, 10))
>b : Symbol(b, Decl(spreadDuplicate.ts, 3, 11))
let c1 = { a: 123, ...c }; // string | undefined (Error)
>c1 : Symbol(c1, Decl(spreadDuplicate.ts, 11, 3))
>a : Symbol(a, Decl(spreadDuplicate.ts, 11, 10))
>c : Symbol(c, Decl(spreadDuplicate.ts, 4, 11))
let d1 = { a: 123, ...d }; // string | number
>d1 : Symbol(d1, Decl(spreadDuplicate.ts, 12, 3))
>a : Symbol(a, Decl(spreadDuplicate.ts, 12, 10))
>d : Symbol(d, Decl(spreadDuplicate.ts, 5, 11))
let a2 = { a: 123, ...(t ? a : {}) }; // string | number
>a2 : Symbol(a2, Decl(spreadDuplicate.ts, 14, 3))
>a : Symbol(a, Decl(spreadDuplicate.ts, 14, 10))
>t : Symbol(t, Decl(spreadDuplicate.ts, 7, 11))
>a : Symbol(a, Decl(spreadDuplicate.ts, 2, 11))
let b2 = { a: 123, ...(t ? b : {}) }; // string | number
>b2 : Symbol(b2, Decl(spreadDuplicate.ts, 15, 3))
>a : Symbol(a, Decl(spreadDuplicate.ts, 15, 10))
>t : Symbol(t, Decl(spreadDuplicate.ts, 7, 11))
>b : Symbol(b, Decl(spreadDuplicate.ts, 3, 11))
let c2 = { a: 123, ...(t ? c : {}) }; // string | number
>c2 : Symbol(c2, Decl(spreadDuplicate.ts, 16, 3))
>a : Symbol(a, Decl(spreadDuplicate.ts, 16, 10))
>t : Symbol(t, Decl(spreadDuplicate.ts, 7, 11))
>c : Symbol(c, Decl(spreadDuplicate.ts, 4, 11))
let d2 = { a: 123, ...(t ? d : {}) }; // string | number
>d2 : Symbol(d2, Decl(spreadDuplicate.ts, 17, 3))
>a : Symbol(a, Decl(spreadDuplicate.ts, 17, 10))
>t : Symbol(t, Decl(spreadDuplicate.ts, 7, 11))
>d : Symbol(d, Decl(spreadDuplicate.ts, 5, 11))
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