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=== tests/cases/conformance/types/spread/spreadOverwritesPropertyStrict.ts ===
declare var ab: { a: number, b: number };
>ab : { a: number; b: number; }
>a : number
>b : number
declare var abq: { a: number, b?: number };
>abq : { a: number; b?: number | undefined; }
>a : number
>b : number | undefined
var unused1 = { b: 1, ...ab } // error
>unused1 : { a: number; b: number; }
>{ b: 1, ...ab } : { a: number; b: number; }
>b : number
>1 : 1
>ab : { a: number; b: number; }
var unused2 = { ...ab, ...ab } // ok, overwritten error doesn't apply to spreads
>unused2 : { a: number; b: number; }
>{ ...ab, ...ab } : { a: number; b: number; }
>ab : { a: number; b: number; }
>ab : { a: number; b: number; }
var unused3 = { b: 1, ...abq } // ok, abq might have b: undefined
>unused3 : { a: number; b: number; }
>{ b: 1, ...abq } : { a: number; b: number; }
>b : number
>1 : 1
>abq : { a: number; b?: number | undefined; }
var unused4 = { ...ab, b: 1 } // ok, we don't care that b in ab is overwritten
>unused4 : { b: number; a: number; }
>{ ...ab, b: 1 } : { b: number; a: number; }
>ab : { a: number; b: number; }
>b : number
>1 : 1
var unused5 = { ...abq, b: 1 } // ok
>unused5 : { b: number; a: number; }
>{ ...abq, b: 1 } : { b: number; a: number; }
>abq : { a: number; b?: number | undefined; }
>b : number
>1 : 1
function g(obj: { x: number | undefined }) {
>g : (obj: { x: number | undefined;}) => { x: number | undefined; }
>obj : { x: number | undefined; }
>x : number | undefined
return { x: 1, ...obj }; // ok, obj might have x: undefined
>{ x: 1, ...obj } : { x: number | undefined; }
>x : number
>1 : 1
>obj : { x: number | undefined; }
}
function f(obj: { x: number } | undefined) {
>f : (obj: { x: number;} | undefined) => { x: number; }
>obj : { x: number; } | undefined
>x : number
return { x: 1, ...obj }; // ok, obj might be undefined
>{ x: 1, ...obj } : { x: number; }
>x : number
>1 : 1
>obj : { x: number; } | undefined
}
function h(obj: { x: number } | { x: string }) {
>h : (obj: { x: number;} | { x: string;}) => { x: number; } | { x: string; }
>obj : { x: number; } | { x: string; }
>x : number
>x : string
return { x: 1, ...obj } // error
>{ x: 1, ...obj } : { x: number; } | { x: string; }
>x : number
>1 : 1
>obj : { x: number; } | { x: string; }
}
function i(b: boolean, t: { command: string, ok: string }) {
>i : (b: boolean, t: { command: string; ok: string;}) => { command: string; ok?: string | undefined; }
>b : boolean
>t : { command: string; ok: string; }
>command : string
>ok : string
return { command: "hi", ...(b ? t : {}) } // ok
>{ command: "hi", ...(b ? t : {}) } : { command: string; ok?: string | undefined; }
>command : string
>"hi" : "hi"
>(b ? t : {}) : { command: string; ok: string; } | {}
>b ? t : {} : { command: string; ok: string; } | {}
>b : boolean
>t : { command: string; ok: string; }
>{} : {}
}
function j() {
>j : () => { command: string; }
return { ...{ command: "hi" } , ...{ command: "bye" } } // ok
>{ ...{ command: "hi" } , ...{ command: "bye" } } : { command: string; }
>{ command: "hi" } : { command: string; }
>command : string
>"hi" : "hi"
>{ command: "bye" } : { command: string; }
>command : string
>"bye" : "bye"
}
function k(t: { command: string, ok: string }) {
>k : (t: { command: string; ok: string;}) => { command: string; ok: string; spoiler2: boolean; spoiler: boolean; }
>t : { command: string; ok: string; }
>command : string
>ok : string
return { command: "hi", ...{ spoiler: true }, spoiler2: true, ...t } // error
>{ command: "hi", ...{ spoiler: true }, spoiler2: true, ...t } : { command: string; ok: string; spoiler2: boolean; spoiler: boolean; }
>command : string
>"hi" : "hi"
>{ spoiler: true } : { spoiler: boolean; }
>spoiler : boolean
>true : true
>spoiler2 : boolean
>true : true
>t : { command: string; ok: string; }
}
function l(anyrequired: { a: any }) {
>l : (anyrequired: { a: any;}) => { a: any; }
>anyrequired : { a: any; }
>a : any
return { a: 'zzz', ...anyrequired } // error
>{ a: 'zzz', ...anyrequired } : { a: any; }
>a : string
>'zzz' : "zzz"
>anyrequired : { a: any; }
}
function m(anyoptional: { a?: any }) {
>m : (anyoptional: { a?: any;}) => { a: any; }
>anyoptional : { a?: any; }
>a : any
return { a: 'zzz', ...anyoptional } // ok
>{ a: 'zzz', ...anyoptional } : { a: any; }
>a : string
>'zzz' : "zzz"
>anyoptional : { a?: any; }
}
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