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TypeScript/tests/baselines/reference/controlFlowOptionalChain2.symbols
Andrew Branch c15f40abfa
Fix discriminant property narrowing through optional chain with null (#42503) 
* Fix discriminant property narrowing through optional chain with null

* Accept baselines

* Add tests from Anders
2021-01-29 12:03:42 -08:00

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=== tests/cases/conformance/controlFlow/controlFlowOptionalChain2.ts ===
type A = {
>A : Symbol(A, Decl(controlFlowOptionalChain2.ts, 0, 0))
type: 'A';
>type : Symbol(type, Decl(controlFlowOptionalChain2.ts, 0, 10))
name: string;
>name : Symbol(name, Decl(controlFlowOptionalChain2.ts, 1, 12))
}
type B = {
>B : Symbol(B, Decl(controlFlowOptionalChain2.ts, 3, 1))
type: 'B';
>type : Symbol(type, Decl(controlFlowOptionalChain2.ts, 5, 10))
}
function funcTwo(arg: A | B | undefined) {
>funcTwo : Symbol(funcTwo, Decl(controlFlowOptionalChain2.ts, 7, 1))
>arg : Symbol(arg, Decl(controlFlowOptionalChain2.ts, 9, 17))
>A : Symbol(A, Decl(controlFlowOptionalChain2.ts, 0, 0))
>B : Symbol(B, Decl(controlFlowOptionalChain2.ts, 3, 1))
if (arg?.type === 'B') {
>arg?.type : Symbol(type, Decl(controlFlowOptionalChain2.ts, 0, 10), Decl(controlFlowOptionalChain2.ts, 5, 10))
>arg : Symbol(arg, Decl(controlFlowOptionalChain2.ts, 9, 17))
>type : Symbol(type, Decl(controlFlowOptionalChain2.ts, 0, 10), Decl(controlFlowOptionalChain2.ts, 5, 10))
arg; // `B`
>arg : Symbol(arg, Decl(controlFlowOptionalChain2.ts, 9, 17))
return;
}
arg;
>arg : Symbol(arg, Decl(controlFlowOptionalChain2.ts, 9, 17))
arg?.name;
>arg?.name : Symbol(name, Decl(controlFlowOptionalChain2.ts, 1, 12))
>arg : Symbol(arg, Decl(controlFlowOptionalChain2.ts, 9, 17))
>name : Symbol(name, Decl(controlFlowOptionalChain2.ts, 1, 12))
}
function funcThree(arg: A | B | null) {
>funcThree : Symbol(funcThree, Decl(controlFlowOptionalChain2.ts, 17, 1))
>arg : Symbol(arg, Decl(controlFlowOptionalChain2.ts, 19, 19))
>A : Symbol(A, Decl(controlFlowOptionalChain2.ts, 0, 0))
>B : Symbol(B, Decl(controlFlowOptionalChain2.ts, 3, 1))
if (arg?.type === 'B') {
>arg?.type : Symbol(type, Decl(controlFlowOptionalChain2.ts, 0, 10), Decl(controlFlowOptionalChain2.ts, 5, 10))
>arg : Symbol(arg, Decl(controlFlowOptionalChain2.ts, 19, 19))
>type : Symbol(type, Decl(controlFlowOptionalChain2.ts, 0, 10), Decl(controlFlowOptionalChain2.ts, 5, 10))
arg; // `B`
>arg : Symbol(arg, Decl(controlFlowOptionalChain2.ts, 19, 19))
return;
}
arg;
>arg : Symbol(arg, Decl(controlFlowOptionalChain2.ts, 19, 19))
arg?.name;
>arg?.name : Symbol(name, Decl(controlFlowOptionalChain2.ts, 1, 12))
>arg : Symbol(arg, Decl(controlFlowOptionalChain2.ts, 19, 19))
>name : Symbol(name, Decl(controlFlowOptionalChain2.ts, 1, 12))
}
type U = { kind: undefined, u: 'u' }
>U : Symbol(U, Decl(controlFlowOptionalChain2.ts, 27, 1))
>kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 29, 10))
>u : Symbol(u, Decl(controlFlowOptionalChain2.ts, 29, 27))
type N = { kind: null, n: 'n' }
>N : Symbol(N, Decl(controlFlowOptionalChain2.ts, 29, 36))
>kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 30, 10))
>n : Symbol(n, Decl(controlFlowOptionalChain2.ts, 30, 22))
type X = { kind: 'X', x: 'x' }
>X : Symbol(X, Decl(controlFlowOptionalChain2.ts, 30, 31))
>kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 31, 10))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 31, 21))
function f1(x: X | U | undefined) {
>f1 : Symbol(f1, Decl(controlFlowOptionalChain2.ts, 31, 30))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 33, 12))
>X : Symbol(X, Decl(controlFlowOptionalChain2.ts, 30, 31))
>U : Symbol(U, Decl(controlFlowOptionalChain2.ts, 27, 1))
if (x?.kind === undefined) {
>x?.kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 29, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 33, 12))
>kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 29, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
>undefined : Symbol(undefined)
x; // U | undefined
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 33, 12))
}
else {
x; // X
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 33, 12))
}
}
function f2(x: X | N | undefined) {
>f2 : Symbol(f2, Decl(controlFlowOptionalChain2.ts, 40, 1))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 42, 12))
>X : Symbol(X, Decl(controlFlowOptionalChain2.ts, 30, 31))
>N : Symbol(N, Decl(controlFlowOptionalChain2.ts, 29, 36))
if (x?.kind === undefined) {
>x?.kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 30, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 42, 12))
>kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 30, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
>undefined : Symbol(undefined)
x; // undefined
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 42, 12))
}
else {
x; // X | N
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 42, 12))
}
}
function f3(x: X | U | null) {
>f3 : Symbol(f3, Decl(controlFlowOptionalChain2.ts, 49, 1))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 51, 12))
>X : Symbol(X, Decl(controlFlowOptionalChain2.ts, 30, 31))
>U : Symbol(U, Decl(controlFlowOptionalChain2.ts, 27, 1))
if (x?.kind === undefined) {
>x?.kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 29, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 51, 12))
>kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 29, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
>undefined : Symbol(undefined)
x; // U | null
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 51, 12))
}
else {
x; // X
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 51, 12))
}
}
function f4(x: X | N | null) {
>f4 : Symbol(f4, Decl(controlFlowOptionalChain2.ts, 58, 1))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 60, 12))
>X : Symbol(X, Decl(controlFlowOptionalChain2.ts, 30, 31))
>N : Symbol(N, Decl(controlFlowOptionalChain2.ts, 29, 36))
if (x?.kind === undefined) {
>x?.kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 30, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 60, 12))
>kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 30, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
>undefined : Symbol(undefined)
x; // null
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 60, 12))
}
else {
x; // X | N
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 60, 12))
}
}
function f5(x: X | U | undefined) {
>f5 : Symbol(f5, Decl(controlFlowOptionalChain2.ts, 67, 1))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 69, 12))
>X : Symbol(X, Decl(controlFlowOptionalChain2.ts, 30, 31))
>U : Symbol(U, Decl(controlFlowOptionalChain2.ts, 27, 1))
if (x?.kind === null) {
>x?.kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 29, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 69, 12))
>kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 29, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
x; // never
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 69, 12))
}
else {
x; // X | U | undefined
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 69, 12))
}
}
function f6(x: X | N | undefined) {
>f6 : Symbol(f6, Decl(controlFlowOptionalChain2.ts, 76, 1))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 78, 12))
>X : Symbol(X, Decl(controlFlowOptionalChain2.ts, 30, 31))
>N : Symbol(N, Decl(controlFlowOptionalChain2.ts, 29, 36))
if (x?.kind === null) {
>x?.kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 30, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 78, 12))
>kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 30, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
x; // N
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 78, 12))
}
else {
x; // X | undefined
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 78, 12))
}
}
function f7(x: X | U | null) {
>f7 : Symbol(f7, Decl(controlFlowOptionalChain2.ts, 85, 1))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 87, 12))
>X : Symbol(X, Decl(controlFlowOptionalChain2.ts, 30, 31))
>U : Symbol(U, Decl(controlFlowOptionalChain2.ts, 27, 1))
if (x?.kind === null) {
>x?.kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 29, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 87, 12))
>kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 29, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
x; // never
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 87, 12))
}
else {
x; // X | U | null
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 87, 12))
}
}
function f8(x: X | N | null) {
>f8 : Symbol(f8, Decl(controlFlowOptionalChain2.ts, 94, 1))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 96, 12))
>X : Symbol(X, Decl(controlFlowOptionalChain2.ts, 30, 31))
>N : Symbol(N, Decl(controlFlowOptionalChain2.ts, 29, 36))
if (x?.kind === null) {
>x?.kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 30, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 96, 12))
>kind : Symbol(kind, Decl(controlFlowOptionalChain2.ts, 30, 10), Decl(controlFlowOptionalChain2.ts, 31, 10))
x; // N
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 96, 12))
}
else {
x; // X | null
>x : Symbol(x, Decl(controlFlowOptionalChain2.ts, 96, 12))
}
}
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