131 lines
7 KiB
Text
131 lines
7 KiB
Text
=== tests/cases/conformance/types/typeRelationships/bestCommonType/bestCommonTypeOfConditionalExpressions.ts ===
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// conditional expressions return the best common type of the branches plus contextual type (using the first candidate if multiple BCTs exist)
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// no errors expected here
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var a: { x: number; y?: number };
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>a : { x: number; y?: number; }, Symbol(a,Decl(bestCommonTypeOfConditionalExpressions.ts,3,3))
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>x : number, Symbol(x,Decl(bestCommonTypeOfConditionalExpressions.ts,3,8))
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>y : number, Symbol(y,Decl(bestCommonTypeOfConditionalExpressions.ts,3,19))
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var b: { x: number; z?: number };
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>b : { x: number; z?: number; }, Symbol(b,Decl(bestCommonTypeOfConditionalExpressions.ts,4,3))
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>x : number, Symbol(x,Decl(bestCommonTypeOfConditionalExpressions.ts,4,8))
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>z : number, Symbol(z,Decl(bestCommonTypeOfConditionalExpressions.ts,4,19))
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class Base { foo: string; }
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>Base : Base, Symbol(Base,Decl(bestCommonTypeOfConditionalExpressions.ts,4,33))
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>foo : string, Symbol(foo,Decl(bestCommonTypeOfConditionalExpressions.ts,6,12))
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class Derived extends Base { bar: string; }
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>Derived : Derived, Symbol(Derived,Decl(bestCommonTypeOfConditionalExpressions.ts,6,27))
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>Base : Base, Symbol(Base,Decl(bestCommonTypeOfConditionalExpressions.ts,4,33))
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>bar : string, Symbol(bar,Decl(bestCommonTypeOfConditionalExpressions.ts,7,28))
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class Derived2 extends Base { baz: string; }
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>Derived2 : Derived2, Symbol(Derived2,Decl(bestCommonTypeOfConditionalExpressions.ts,7,43))
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>Base : Base, Symbol(Base,Decl(bestCommonTypeOfConditionalExpressions.ts,4,33))
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>baz : string, Symbol(baz,Decl(bestCommonTypeOfConditionalExpressions.ts,8,29))
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var base: Base;
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>base : Base, Symbol(base,Decl(bestCommonTypeOfConditionalExpressions.ts,9,3))
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>Base : Base, Symbol(Base,Decl(bestCommonTypeOfConditionalExpressions.ts,4,33))
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var derived: Derived;
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>derived : Derived, Symbol(derived,Decl(bestCommonTypeOfConditionalExpressions.ts,10,3))
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>Derived : Derived, Symbol(Derived,Decl(bestCommonTypeOfConditionalExpressions.ts,6,27))
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var derived2: Derived2;
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>derived2 : Derived2, Symbol(derived2,Decl(bestCommonTypeOfConditionalExpressions.ts,11,3))
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>Derived2 : Derived2, Symbol(Derived2,Decl(bestCommonTypeOfConditionalExpressions.ts,7,43))
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var r = true ? 1 : 2;
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>r : number, Symbol(r,Decl(bestCommonTypeOfConditionalExpressions.ts,13,3))
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>true ? 1 : 2 : number
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>true : boolean
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>1 : number
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>2 : number
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var r3 = true ? 1 : {};
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>r3 : {}, Symbol(r3,Decl(bestCommonTypeOfConditionalExpressions.ts,14,3))
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>true ? 1 : {} : {}
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>true : boolean
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>1 : number
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>{} : {}
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var r4 = true ? a : b; // typeof a
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>r4 : { x: number; y?: number; } | { x: number; z?: number; }, Symbol(r4,Decl(bestCommonTypeOfConditionalExpressions.ts,15,3))
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>true ? a : b : { x: number; y?: number; } | { x: number; z?: number; }
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>true : boolean
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>a : { x: number; y?: number; }, Symbol(a,Decl(bestCommonTypeOfConditionalExpressions.ts,3,3))
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>b : { x: number; z?: number; }, Symbol(b,Decl(bestCommonTypeOfConditionalExpressions.ts,4,3))
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var r5 = true ? b : a; // typeof b
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>r5 : { x: number; y?: number; } | { x: number; z?: number; }, Symbol(r5,Decl(bestCommonTypeOfConditionalExpressions.ts,16,3))
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>true ? b : a : { x: number; y?: number; } | { x: number; z?: number; }
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>true : boolean
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>b : { x: number; z?: number; }, Symbol(b,Decl(bestCommonTypeOfConditionalExpressions.ts,4,3))
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>a : { x: number; y?: number; }, Symbol(a,Decl(bestCommonTypeOfConditionalExpressions.ts,3,3))
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var r6 = true ? (x: number) => { } : (x: Object) => { }; // returns number => void
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>r6 : (x: number) => void, Symbol(r6,Decl(bestCommonTypeOfConditionalExpressions.ts,17,3))
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>true ? (x: number) => { } : (x: Object) => { } : (x: number) => void
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>true : boolean
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>(x: number) => { } : (x: number) => void
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>x : number, Symbol(x,Decl(bestCommonTypeOfConditionalExpressions.ts,17,17))
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>(x: Object) => { } : (x: Object) => void
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>x : Object, Symbol(x,Decl(bestCommonTypeOfConditionalExpressions.ts,17,38))
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>Object : Object, Symbol(Object,Decl(lib.d.ts,92,1),Decl(lib.d.ts,223,11))
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var r7: (x: Object) => void = true ? (x: number) => { } : (x: Object) => { };
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>r7 : (x: Object) => void, Symbol(r7,Decl(bestCommonTypeOfConditionalExpressions.ts,18,3))
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>x : Object, Symbol(x,Decl(bestCommonTypeOfConditionalExpressions.ts,18,9))
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>Object : Object, Symbol(Object,Decl(lib.d.ts,92,1),Decl(lib.d.ts,223,11))
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>true ? (x: number) => { } : (x: Object) => { } : (x: number) => void
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>true : boolean
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>(x: number) => { } : (x: number) => void
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>x : number, Symbol(x,Decl(bestCommonTypeOfConditionalExpressions.ts,18,38))
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>(x: Object) => { } : (x: Object) => void
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>x : Object, Symbol(x,Decl(bestCommonTypeOfConditionalExpressions.ts,18,59))
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>Object : Object, Symbol(Object,Decl(lib.d.ts,92,1),Decl(lib.d.ts,223,11))
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var r8 = true ? (x: Object) => { } : (x: number) => { }; // returns Object => void
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>r8 : (x: Object) => void, Symbol(r8,Decl(bestCommonTypeOfConditionalExpressions.ts,19,3))
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>true ? (x: Object) => { } : (x: number) => { } : (x: Object) => void
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>true : boolean
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>(x: Object) => { } : (x: Object) => void
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>x : Object, Symbol(x,Decl(bestCommonTypeOfConditionalExpressions.ts,19,17))
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>Object : Object, Symbol(Object,Decl(lib.d.ts,92,1),Decl(lib.d.ts,223,11))
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>(x: number) => { } : (x: number) => void
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>x : number, Symbol(x,Decl(bestCommonTypeOfConditionalExpressions.ts,19,38))
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var r10: Base = true ? derived : derived2; // no error since we use the contextual type in BCT
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>r10 : Base, Symbol(r10,Decl(bestCommonTypeOfConditionalExpressions.ts,20,3))
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>Base : Base, Symbol(Base,Decl(bestCommonTypeOfConditionalExpressions.ts,4,33))
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>true ? derived : derived2 : Derived | Derived2
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>true : boolean
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>derived : Derived, Symbol(derived,Decl(bestCommonTypeOfConditionalExpressions.ts,10,3))
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>derived2 : Derived2, Symbol(derived2,Decl(bestCommonTypeOfConditionalExpressions.ts,11,3))
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var r11 = true ? base : derived2;
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>r11 : Base, Symbol(r11,Decl(bestCommonTypeOfConditionalExpressions.ts,21,3))
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>true ? base : derived2 : Base
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>true : boolean
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>base : Base, Symbol(base,Decl(bestCommonTypeOfConditionalExpressions.ts,9,3))
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>derived2 : Derived2, Symbol(derived2,Decl(bestCommonTypeOfConditionalExpressions.ts,11,3))
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function foo5<T, U>(t: T, u: U): Object {
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>foo5 : <T, U>(t: T, u: U) => Object, Symbol(foo5,Decl(bestCommonTypeOfConditionalExpressions.ts,21,33))
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>T : T, Symbol(T,Decl(bestCommonTypeOfConditionalExpressions.ts,23,14))
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>U : U, Symbol(U,Decl(bestCommonTypeOfConditionalExpressions.ts,23,16))
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>t : T, Symbol(t,Decl(bestCommonTypeOfConditionalExpressions.ts,23,20))
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>T : T, Symbol(T,Decl(bestCommonTypeOfConditionalExpressions.ts,23,14))
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>u : U, Symbol(u,Decl(bestCommonTypeOfConditionalExpressions.ts,23,25))
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>U : U, Symbol(U,Decl(bestCommonTypeOfConditionalExpressions.ts,23,16))
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>Object : Object, Symbol(Object,Decl(lib.d.ts,92,1),Decl(lib.d.ts,223,11))
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return true ? t : u; // BCT is Object
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>true ? t : u : T | U
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>true : boolean
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>t : T, Symbol(t,Decl(bestCommonTypeOfConditionalExpressions.ts,23,20))
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>u : U, Symbol(u,Decl(bestCommonTypeOfConditionalExpressions.ts,23,25))
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}
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