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=== tests/cases/conformance/expressions/optionalChaining/delete/deleteChain.ts ===
declare const o1: undefined | { b: string };
>o1 : Symbol(o1, Decl(deleteChain.ts, 0, 13))
>b : Symbol(b, Decl(deleteChain.ts, 0, 31))
delete o1?.b;
>o1?.b : Symbol(b, Decl(deleteChain.ts, 0, 31))
>o1 : Symbol(o1, Decl(deleteChain.ts, 0, 13))
>b : Symbol(b, Decl(deleteChain.ts, 0, 31))
delete (o1?.b);
>o1?.b : Symbol(b, Decl(deleteChain.ts, 0, 31))
>o1 : Symbol(o1, Decl(deleteChain.ts, 0, 13))
>b : Symbol(b, Decl(deleteChain.ts, 0, 31))
declare const o2: undefined | { b: { c: string } };
>o2 : Symbol(o2, Decl(deleteChain.ts, 4, 13))
>b : Symbol(b, Decl(deleteChain.ts, 4, 31))
>c : Symbol(c, Decl(deleteChain.ts, 4, 36))
delete o2?.b.c;
>o2?.b.c : Symbol(c, Decl(deleteChain.ts, 4, 36))
>o2?.b : Symbol(b, Decl(deleteChain.ts, 4, 31))
>o2 : Symbol(o2, Decl(deleteChain.ts, 4, 13))
>b : Symbol(b, Decl(deleteChain.ts, 4, 31))
>c : Symbol(c, Decl(deleteChain.ts, 4, 36))
delete (o2?.b.c);
>o2?.b.c : Symbol(c, Decl(deleteChain.ts, 4, 36))
>o2?.b : Symbol(b, Decl(deleteChain.ts, 4, 31))
>o2 : Symbol(o2, Decl(deleteChain.ts, 4, 13))
>b : Symbol(b, Decl(deleteChain.ts, 4, 31))
>c : Symbol(c, Decl(deleteChain.ts, 4, 36))
declare const o3: { b: undefined | { c: string } };
>o3 : Symbol(o3, Decl(deleteChain.ts, 8, 13))
>b : Symbol(b, Decl(deleteChain.ts, 8, 19))
>c : Symbol(c, Decl(deleteChain.ts, 8, 36))
delete o3.b?.c;
>o3.b?.c : Symbol(c, Decl(deleteChain.ts, 8, 36))
>o3.b : Symbol(b, Decl(deleteChain.ts, 8, 19))
>o3 : Symbol(o3, Decl(deleteChain.ts, 8, 13))
>b : Symbol(b, Decl(deleteChain.ts, 8, 19))
>c : Symbol(c, Decl(deleteChain.ts, 8, 36))
delete (o3.b?.c);
>o3.b?.c : Symbol(c, Decl(deleteChain.ts, 8, 36))
>o3.b : Symbol(b, Decl(deleteChain.ts, 8, 19))
>o3 : Symbol(o3, Decl(deleteChain.ts, 8, 13))
>b : Symbol(b, Decl(deleteChain.ts, 8, 19))
>c : Symbol(c, Decl(deleteChain.ts, 8, 36))
declare const o4: { b?: { c: { d?: { e: string } } } };
>o4 : Symbol(o4, Decl(deleteChain.ts, 12, 13))
>b : Symbol(b, Decl(deleteChain.ts, 12, 19))
>c : Symbol(c, Decl(deleteChain.ts, 12, 25))
>d : Symbol(d, Decl(deleteChain.ts, 12, 30))
>e : Symbol(e, Decl(deleteChain.ts, 12, 36))
delete o4.b?.c.d?.e;
>o4.b?.c.d?.e : Symbol(e, Decl(deleteChain.ts, 12, 36))
>o4.b?.c.d : Symbol(d, Decl(deleteChain.ts, 12, 30))
>o4.b?.c : Symbol(c, Decl(deleteChain.ts, 12, 25))
>o4.b : Symbol(b, Decl(deleteChain.ts, 12, 19))
>o4 : Symbol(o4, Decl(deleteChain.ts, 12, 13))
>b : Symbol(b, Decl(deleteChain.ts, 12, 19))
>c : Symbol(c, Decl(deleteChain.ts, 12, 25))
>d : Symbol(d, Decl(deleteChain.ts, 12, 30))
>e : Symbol(e, Decl(deleteChain.ts, 12, 36))
delete (o4.b?.c.d)?.e;
>(o4.b?.c.d)?.e : Symbol(e, Decl(deleteChain.ts, 12, 36))
>o4.b?.c.d : Symbol(d, Decl(deleteChain.ts, 12, 30))
>o4.b?.c : Symbol(c, Decl(deleteChain.ts, 12, 25))
>o4.b : Symbol(b, Decl(deleteChain.ts, 12, 19))
>o4 : Symbol(o4, Decl(deleteChain.ts, 12, 13))
>b : Symbol(b, Decl(deleteChain.ts, 12, 19))
>c : Symbol(c, Decl(deleteChain.ts, 12, 25))
>d : Symbol(d, Decl(deleteChain.ts, 12, 30))
>e : Symbol(e, Decl(deleteChain.ts, 12, 36))
delete (o4.b?.c.d?.e);
>o4.b?.c.d?.e : Symbol(e, Decl(deleteChain.ts, 12, 36))
>o4.b?.c.d : Symbol(d, Decl(deleteChain.ts, 12, 30))
>o4.b?.c : Symbol(c, Decl(deleteChain.ts, 12, 25))
>o4.b : Symbol(b, Decl(deleteChain.ts, 12, 19))
>o4 : Symbol(o4, Decl(deleteChain.ts, 12, 13))
>b : Symbol(b, Decl(deleteChain.ts, 12, 19))
>c : Symbol(c, Decl(deleteChain.ts, 12, 25))
>d : Symbol(d, Decl(deleteChain.ts, 12, 30))
>e : Symbol(e, Decl(deleteChain.ts, 12, 36))
declare const o5: { b?(): { c: { d?: { e: string } } } };
>o5 : Symbol(o5, Decl(deleteChain.ts, 17, 13))
>b : Symbol(b, Decl(deleteChain.ts, 17, 19))
>c : Symbol(c, Decl(deleteChain.ts, 17, 27))
>d : Symbol(d, Decl(deleteChain.ts, 17, 32))
>e : Symbol(e, Decl(deleteChain.ts, 17, 38))
delete o5.b?.().c.d?.e;
>o5.b?.().c.d?.e : Symbol(e, Decl(deleteChain.ts, 17, 38))
>o5.b?.().c.d : Symbol(d, Decl(deleteChain.ts, 17, 32))
>o5.b?.().c : Symbol(c, Decl(deleteChain.ts, 17, 27))
>o5.b : Symbol(b, Decl(deleteChain.ts, 17, 19))
>o5 : Symbol(o5, Decl(deleteChain.ts, 17, 13))
>b : Symbol(b, Decl(deleteChain.ts, 17, 19))
>c : Symbol(c, Decl(deleteChain.ts, 17, 27))
>d : Symbol(d, Decl(deleteChain.ts, 17, 32))
>e : Symbol(e, Decl(deleteChain.ts, 17, 38))
delete (o5.b?.().c.d?.e);
>o5.b?.().c.d?.e : Symbol(e, Decl(deleteChain.ts, 17, 38))
>o5.b?.().c.d : Symbol(d, Decl(deleteChain.ts, 17, 32))
>o5.b?.().c : Symbol(c, Decl(deleteChain.ts, 17, 27))
>o5.b : Symbol(b, Decl(deleteChain.ts, 17, 19))
>o5 : Symbol(o5, Decl(deleteChain.ts, 17, 13))
>b : Symbol(b, Decl(deleteChain.ts, 17, 19))
>c : Symbol(c, Decl(deleteChain.ts, 17, 27))
>d : Symbol(d, Decl(deleteChain.ts, 17, 32))
>e : Symbol(e, Decl(deleteChain.ts, 17, 38))
declare const o6: { b?: { c: { d?: { e: string } } } };
>o6 : Symbol(o6, Decl(deleteChain.ts, 21, 13))
>b : Symbol(b, Decl(deleteChain.ts, 21, 19))
>c : Symbol(c, Decl(deleteChain.ts, 21, 25))
>d : Symbol(d, Decl(deleteChain.ts, 21, 30))
>e : Symbol(e, Decl(deleteChain.ts, 21, 36))
delete o6.b?.['c'].d?.['e'];
>o6.b?.['c'].d : Symbol(d, Decl(deleteChain.ts, 21, 30))
>o6.b : Symbol(b, Decl(deleteChain.ts, 21, 19))
>o6 : Symbol(o6, Decl(deleteChain.ts, 21, 13))
>b : Symbol(b, Decl(deleteChain.ts, 21, 19))
>d : Symbol(d, Decl(deleteChain.ts, 21, 30))
delete (o6.b?.['c'].d?.['e']);
>o6.b?.['c'].d : Symbol(d, Decl(deleteChain.ts, 21, 30))
>o6.b : Symbol(b, Decl(deleteChain.ts, 21, 19))
>o6 : Symbol(o6, Decl(deleteChain.ts, 21, 13))
>b : Symbol(b, Decl(deleteChain.ts, 21, 19))
>d : Symbol(d, Decl(deleteChain.ts, 21, 30))
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