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=== tests/cases/conformance/expressions/optionalChaining/optionalChainingInference.ts ===
// https://github.com/microsoft/TypeScript/issues/34579
declare function unbox<T>(box: { value: T | undefined }): T;
>unbox : <T>(box: { value: T | undefined;}) => T
>box : { value: T | undefined; }
>value : T
declare const su: string | undefined;
>su : string
declare const fnu: (() => number) | undefined;
>fnu : () => number
declare const osu: { prop: string } | undefined;
>osu : { prop: string; }
>prop : string
declare const ofnu: { prop: () => number } | undefined;
>ofnu : { prop: () => number; }
>prop : () => number
const b1 = { value: su?.length };
>b1 : { value: number; }
>{ value: su?.length } : { value: number; }
>value : number
>su?.length : number
>su : string
>length : number
const v1: number = unbox(b1);
>v1 : number
>unbox(b1) : number
>unbox : <T>(box: { value: T; }) => T
>b1 : { value: number; }
const b2 = { value: su?.length as number | undefined };
>b2 : { value: number; }
>{ value: su?.length as number | undefined } : { value: number; }
>value : number
>su?.length as number | undefined : number
>su?.length : number
>su : string
>length : number
const v2: number = unbox(b2);
>v2 : number
>unbox(b2) : number
>unbox : <T>(box: { value: T; }) => T
>b2 : { value: number; }
const b3: { value: number | undefined } = { value: su?.length };
>b3 : { value: number | undefined; }
>value : number
>{ value: su?.length } : { value: number; }
>value : number
>su?.length : number
>su : string
>length : number
const v3: number = unbox(b3);
>v3 : number
>unbox(b3) : number
>unbox : <T>(box: { value: T; }) => T
>b3 : { value: number; }
const b4 = { value: fnu?.() };
>b4 : { value: number; }
>{ value: fnu?.() } : { value: number; }
>value : number
>fnu?.() : number
>fnu : () => number
const v4: number = unbox(b4);
>v4 : number
>unbox(b4) : number
>unbox : <T>(box: { value: T; }) => T
>b4 : { value: number; }
const b5 = { value: su?.["length"] };
>b5 : { value: number; }
>{ value: su?.["length"] } : { value: number; }
>value : number
>su?.["length"] : number
>su : string
>"length" : "length"
const v5: number = unbox(b5);
>v5 : number
>unbox(b5) : number
>unbox : <T>(box: { value: T; }) => T
>b5 : { value: number; }
const b6 = { value: osu?.prop.length };
>b6 : { value: number; }
>{ value: osu?.prop.length } : { value: number; }
>value : number
>osu?.prop.length : number
>osu?.prop : string
>osu : { prop: string; }
>prop : string
>length : number
const v6: number = unbox(b6);
>v6 : number
>unbox(b6) : number
>unbox : <T>(box: { value: T; }) => T
>b6 : { value: number; }
const b7 = { value: osu?.prop["length"] };
>b7 : { value: number; }
>{ value: osu?.prop["length"] } : { value: number; }
>value : number
>osu?.prop["length"] : number
>osu?.prop : string
>osu : { prop: string; }
>prop : string
>"length" : "length"
const v7: number = unbox(b7);
>v7 : number
>unbox(b7) : number
>unbox : <T>(box: { value: T; }) => T
>b7 : { value: number; }
const b8 = { value: ofnu?.prop() };
>b8 : { value: number; }
>{ value: ofnu?.prop() } : { value: number; }
>value : number
>ofnu?.prop() : number
>ofnu?.prop : () => number
>ofnu : { prop: () => number; }
>prop : () => number
const v8: number = unbox(b8);
>v8 : number
>unbox(b8) : number
>unbox : <T>(box: { value: T; }) => T
>b8 : { value: number; }
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