Update tests

Author: ahejlsberg

tests/cases/conformance/types/conditional/inferTypes1.ts

@@ -71,7 +71,7 @@ type X3<T> = T extends { a: (x: infer U) => void, b: (x: infer U) => void } ? U
 type T50 = X3<{}>;  // never
 type T51 = X3<{ a: (x: string) => void }>;  // never
 type T52 = X3<{ a: (x: string) => void, b: (x: string) => void }>;  // string
-type T53 = X3<{ a: (x: number) => void, b: (x: string) => void }>;  // string & number
+type T53 = X3<{ a: (x: number) => void, b: (x: string) => void }>;  // never
 type T54 = X3<{ a: (x: number) => void, b: () => void }>;  // number
 
 type T60 = infer U;  // Error

tests/cases/conformance/types/intersection/intersectionReduction.ts

@@ -4,12 +4,12 @@ declare const sym1: unique symbol;
 declare const sym2: unique symbol;
 
 type T1 = string & 'a';  // 'a'
-type T2 = 'a' & string & 'b';  // 'a' & 'b'
+type T2 = 'a' & string & 'b';  // never
 type T3 = number & 10;  // 10
-type T4 = 10 & number & 20;  // 10 & 20
+type T4 = 10 & number & 20;  // never
 type T5 = symbol & typeof sym1;  // typeof sym1
-type T6 = typeof sym1 & symbol & typeof sym2;  // typeof sym1 & typeof sym2
-type T7 = string & 'a' & number & 10 & symbol & typeof sym1;  // 'a' & 10 & typeof sym1
+type T6 = typeof sym1 & symbol & typeof sym2;  // never
+type T7 = string & 'a' & number & 10 & symbol & typeof sym1;  // never
 
 type T10 = string & ('a' | 'b');  // 'a' | 'b'
 type T11 = (string | number) & ('a' | 10);  // 'a' | 10

tests/cases/conformance/types/intersection/intersectionTypeInference2.ts

@@ -3,8 +3,8 @@ declare function f<T>(x: { prop: T }): T;
 declare const a: { prop: string } & { prop: number };
 declare const b: { prop: string & number };
 
-f(a);  // string & number
-f(b);  // string & number
+f(a);  // never
+f(b);  // never
 
 // Repro from #18354
 

tests/cases/conformance/types/keyof/keyofAndIndexedAccessErrors.ts

@@ -27,7 +27,7 @@ type T17 = Shape[void];  // Error
 type T18 = Shape[undefined];  // Error
 type T19 = Shape[{ x: string }];  // Error
 type T20 = Shape[string | number];  // Error
-type T21 = Shape[string & number];  // Error
+type T21 = Shape[string & number];
 type T22 = Shape[string | boolean];  // Error
 
 type T30 = string[]["length"];

tests/cases/conformance/types/typeRelationships/typeInference/unionAndIntersectionInference2.ts

@@ -19,5 +19,5 @@ var c2: string & { name: string } & number;
 var d2: string & { name: string } & number & { name: string };
 f2(a2); // string
 f2(b2); // string[]
-f2(c2); // string & number
-f2(d2); // string & number
+f2(c2); // never
+f2(d2); // never

tests/cases/conformance/types/unknown/unknownType1.ts

@@ -4,7 +4,7 @@
 
 type T00 = unknown & null;  // null
 type T01 = unknown & undefined;  // undefined
-type T02 = unknown & null & undefined;  // null & undefined (which becomes never in union)
+type T02 = unknown & null & undefined;  // never
 type T03 = unknown & string;  // string
 type T04 = unknown & string[];  // string[]
 type T05 = unknown & unknown;  // unknown