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=== tests/cases/conformance/expressions/optionalChaining/callChain/callChain.ts ===
declare const o1: undefined | ((...args: any[]) => number);
>o1 : Symbol(o1, Decl(callChain.ts, 0, 13))
>args : Symbol(args, Decl(callChain.ts, 0, 32))
o1?.();
>o1 : Symbol(o1, Decl(callChain.ts, 0, 13))
o1?.(1);
>o1 : Symbol(o1, Decl(callChain.ts, 0, 13))
o1?.(...[1, 2]);
>o1 : Symbol(o1, Decl(callChain.ts, 0, 13))
o1?.(1, ...[2, 3], 4);
>o1 : Symbol(o1, Decl(callChain.ts, 0, 13))
declare const o2: undefined | { b: (...args: any[]) => number };
>o2 : Symbol(o2, Decl(callChain.ts, 6, 13))
>b : Symbol(b, Decl(callChain.ts, 6, 31))
>args : Symbol(args, Decl(callChain.ts, 6, 36))
o2?.b();
>o2?.b : Symbol(b, Decl(callChain.ts, 6, 31))
>o2 : Symbol(o2, Decl(callChain.ts, 6, 13))
>b : Symbol(b, Decl(callChain.ts, 6, 31))
o2?.b(1);
>o2?.b : Symbol(b, Decl(callChain.ts, 6, 31))
>o2 : Symbol(o2, Decl(callChain.ts, 6, 13))
>b : Symbol(b, Decl(callChain.ts, 6, 31))
o2?.b(...[1, 2]);
>o2?.b : Symbol(b, Decl(callChain.ts, 6, 31))
>o2 : Symbol(o2, Decl(callChain.ts, 6, 13))
>b : Symbol(b, Decl(callChain.ts, 6, 31))
o2?.b(1, ...[2, 3], 4);
>o2?.b : Symbol(b, Decl(callChain.ts, 6, 31))
>o2 : Symbol(o2, Decl(callChain.ts, 6, 13))
>b : Symbol(b, Decl(callChain.ts, 6, 31))
o2?.["b"]();
>o2 : Symbol(o2, Decl(callChain.ts, 6, 13))
o2?.["b"](1);
>o2 : Symbol(o2, Decl(callChain.ts, 6, 13))
o2?.["b"](...[1, 2]);
>o2 : Symbol(o2, Decl(callChain.ts, 6, 13))
o2?.["b"](1, ...[2, 3], 4);
>o2 : Symbol(o2, Decl(callChain.ts, 6, 13))
declare const o3: { b: ((...args: any[]) => { c: string }) | undefined };
>o3 : Symbol(o3, Decl(callChain.ts, 16, 13))
>b : Symbol(b, Decl(callChain.ts, 16, 19))
>args : Symbol(args, Decl(callChain.ts, 16, 25))
>c : Symbol(c, Decl(callChain.ts, 16, 45))
o3.b?.().c;
>o3.b?.().c : Symbol(c, Decl(callChain.ts, 16, 45))
>o3.b : Symbol(b, Decl(callChain.ts, 16, 19))
>o3 : Symbol(o3, Decl(callChain.ts, 16, 13))
>b : Symbol(b, Decl(callChain.ts, 16, 19))
>c : Symbol(c, Decl(callChain.ts, 16, 45))
o3.b?.(1).c;
>o3.b?.(1).c : Symbol(c, Decl(callChain.ts, 16, 45))
>o3.b : Symbol(b, Decl(callChain.ts, 16, 19))
>o3 : Symbol(o3, Decl(callChain.ts, 16, 13))
>b : Symbol(b, Decl(callChain.ts, 16, 19))
>c : Symbol(c, Decl(callChain.ts, 16, 45))
o3.b?.(...[1, 2]).c;
>o3.b?.(...[1, 2]).c : Symbol(c, Decl(callChain.ts, 16, 45))
>o3.b : Symbol(b, Decl(callChain.ts, 16, 19))
>o3 : Symbol(o3, Decl(callChain.ts, 16, 13))
>b : Symbol(b, Decl(callChain.ts, 16, 19))
>c : Symbol(c, Decl(callChain.ts, 16, 45))
o3.b?.(1, ...[2, 3], 4).c;
>o3.b?.(1, ...[2, 3], 4).c : Symbol(c, Decl(callChain.ts, 16, 45))
>o3.b : Symbol(b, Decl(callChain.ts, 16, 19))
>o3 : Symbol(o3, Decl(callChain.ts, 16, 13))
>b : Symbol(b, Decl(callChain.ts, 16, 19))
>c : Symbol(c, Decl(callChain.ts, 16, 45))
o3.b?.()["c"];
>o3.b : Symbol(b, Decl(callChain.ts, 16, 19))
>o3 : Symbol(o3, Decl(callChain.ts, 16, 13))
>b : Symbol(b, Decl(callChain.ts, 16, 19))
o3.b?.(1)["c"];
>o3.b : Symbol(b, Decl(callChain.ts, 16, 19))
>o3 : Symbol(o3, Decl(callChain.ts, 16, 13))
>b : Symbol(b, Decl(callChain.ts, 16, 19))
o3.b?.(...[1, 2])["c"];
>o3.b : Symbol(b, Decl(callChain.ts, 16, 19))
>o3 : Symbol(o3, Decl(callChain.ts, 16, 13))
>b : Symbol(b, Decl(callChain.ts, 16, 19))
o3.b?.(1, ...[2, 3], 4)["c"];
>o3.b : Symbol(b, Decl(callChain.ts, 16, 19))
>o3 : Symbol(o3, Decl(callChain.ts, 16, 13))
>b : Symbol(b, Decl(callChain.ts, 16, 19))
o3["b"]?.().c;
>o3["b"]?.().c : Symbol(c, Decl(callChain.ts, 16, 45))
>o3 : Symbol(o3, Decl(callChain.ts, 16, 13))
>"b" : Symbol(b, Decl(callChain.ts, 16, 19))
>c : Symbol(c, Decl(callChain.ts, 16, 45))
o3["b"]?.(1).c;
>o3["b"]?.(1).c : Symbol(c, Decl(callChain.ts, 16, 45))
>o3 : Symbol(o3, Decl(callChain.ts, 16, 13))
>"b" : Symbol(b, Decl(callChain.ts, 16, 19))
>c : Symbol(c, Decl(callChain.ts, 16, 45))
o3["b"]?.(...[1, 2]).c;
>o3["b"]?.(...[1, 2]).c : Symbol(c, Decl(callChain.ts, 16, 45))
>o3 : Symbol(o3, Decl(callChain.ts, 16, 13))
>"b" : Symbol(b, Decl(callChain.ts, 16, 19))
>c : Symbol(c, Decl(callChain.ts, 16, 45))
o3["b"]?.(1, ...[2, 3], 4).c;
>o3["b"]?.(1, ...[2, 3], 4).c : Symbol(c, Decl(callChain.ts, 16, 45))
>o3 : Symbol(o3, Decl(callChain.ts, 16, 13))
>"b" : Symbol(b, Decl(callChain.ts, 16, 19))
>c : Symbol(c, Decl(callChain.ts, 16, 45))
declare const o4: undefined | (<T>(f: (a: T) => T) => T);
>o4 : Symbol(o4, Decl(callChain.ts, 30, 13))
>T : Symbol(T, Decl(callChain.ts, 30, 32))
>f : Symbol(f, Decl(callChain.ts, 30, 35))
>a : Symbol(a, Decl(callChain.ts, 30, 39))
>T : Symbol(T, Decl(callChain.ts, 30, 32))
>T : Symbol(T, Decl(callChain.ts, 30, 32))
>T : Symbol(T, Decl(callChain.ts, 30, 32))
declare function incr(x: number): number;
>incr : Symbol(incr, Decl(callChain.ts, 30, 57))
>x : Symbol(x, Decl(callChain.ts, 31, 22))
const v: number | undefined = o4?.(incr);
>v : Symbol(v, Decl(callChain.ts, 32, 5))
>o4 : Symbol(o4, Decl(callChain.ts, 30, 13))
>incr : Symbol(incr, Decl(callChain.ts, 30, 57))
// GH#33744
declare const o5: <T>() => undefined | (() => void);
>o5 : Symbol(o5, Decl(callChain.ts, 35, 13))
>T : Symbol(T, Decl(callChain.ts, 35, 19))
o5<number>()?.();
>o5 : Symbol(o5, Decl(callChain.ts, 35, 13))
// GH#36031
o2?.b()!.toString;
>o2?.b()!.toString : Symbol(Number.toString, Decl(lib.es5.d.ts, --, --))
>o2?.b : Symbol(b, Decl(callChain.ts, 6, 31))
>o2 : Symbol(o2, Decl(callChain.ts, 6, 13))
>b : Symbol(b, Decl(callChain.ts, 6, 31))
>toString : Symbol(Number.toString, Decl(lib.es5.d.ts, --, --))
o2?.b()!.toString!;
>o2?.b()!.toString : Symbol(Number.toString, Decl(lib.es5.d.ts, --, --))
>o2?.b : Symbol(b, Decl(callChain.ts, 6, 31))
>o2 : Symbol(o2, Decl(callChain.ts, 6, 13))
>b : Symbol(b, Decl(callChain.ts, 6, 31))
>toString : Symbol(Number.toString, Decl(lib.es5.d.ts, --, --))
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