288 lines
8.6 KiB
Plaintext
288 lines
8.6 KiB
Plaintext
==== tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithGenericCallSignaturesWithOptionalParameters.ts (6 errors) ====
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// call signatures in derived types must have the same or fewer optional parameters as the base type
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module ClassTypeParam {
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interface Base<T> {
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a: () => T;
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a2: (x?: T) => T;
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a3: (x: T) => T;
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a4: (x: T, y?: T) => T;
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a5: (x?: T, y?: T) => T;
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}
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interface I1<T> extends Base<T> {
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a: () => T; // ok, same T of required params
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}
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interface I2<T> extends Base<T> {
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a: (x?: T) => T; // ok, same T of required params
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}
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interface I3<T> extends Base<T> {
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~~
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!!! Interface 'I3<T>' incorrectly extends interface 'Base<T>':
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!!! Types of property 'a' are incompatible:
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!!! Type '(x: T) => T' is not assignable to type '() => T'.
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a: (x: T) => T; // error, too many required params
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}
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interface I4<T> extends Base<T> {
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a2: () => T; // ok, same T of required params
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}
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interface I5<T> extends Base<T> {
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a2: (x?: T) => T; // ok, same T of required params
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}
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interface I6<T> extends Base<T> {
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a2: (x: T) => T; // ok, same number of params
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}
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interface I7<T> extends Base<T> {
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a3: () => T; // ok, fewer required params
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}
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interface I8<T> extends Base<T> {
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a3: (x?: T) => T; // ok, fewer required params
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}
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interface I9<T> extends Base<T> {
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a3: (x: T) => T; // ok, same T of required params
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}
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interface I10<T> extends Base<T> {
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~~~
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!!! Interface 'I10<T>' incorrectly extends interface 'Base<T>':
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!!! Types of property 'a3' are incompatible:
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!!! Type '(x: T, y: T) => T' is not assignable to type '(x: T) => T'.
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a3: (x: T, y: T) => T; // error, too many required params
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}
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interface I11<T> extends Base<T> {
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a4: () => T; // ok, fewer required params
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}
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interface I12<T> extends Base<T> {
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a4: (x?: T, y?: T) => T; // ok, fewer required params
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}
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interface I13<T> extends Base<T> {
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a4: (x: T) => T; // ok, same T of required params
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}
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interface I14<T> extends Base<T> {
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a4: (x: T, y: T) => T; // ok, same number of params
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}
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interface I15<T> extends Base<T> {
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a5: () => T; // ok, fewer required params
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}
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interface I16<T> extends Base<T> {
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a5: (x?: T, y?: T) => T; // ok, fewer required params
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}
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interface I17<T> extends Base<T> {
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a5: (x: T) => T; // ok, all present params match
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}
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interface I18<T> extends Base<T> {
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a5: (x: T, y: T) => T; // ok, same number of params
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}
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}
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module GenericSignaturesInvalid {
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// all of these are errors
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interface Base2 {
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a: <T>() => T;
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a2: <T>(x?: T) => T;
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a3: <T>(x: T) => T;
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a4: <T>(x: T, y?: T) => T;
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a5: <T>(x?: T, y?: T) => T;
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}
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interface I1<T> extends Base2 {
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a: () => T;
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}
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interface I2<T> extends Base2 {
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a: (x?: T) => T;
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}
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interface I3<T> extends Base2 {
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~~
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!!! Interface 'I3<T>' incorrectly extends interface 'Base2':
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!!! Types of property 'a' are incompatible:
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!!! Type '(x: T) => T' is not assignable to type '<T>() => T'.
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a: (x: T) => T;
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}
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interface I4<T> extends Base2 {
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a2: () => T;
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}
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interface I5<T> extends Base2 {
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a2: (x?: T) => T
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}
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interface I6<T> extends Base2 {
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a2: (x: T) => T;
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}
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interface I7<T> extends Base2 {
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a3: () => T;
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}
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interface I8<T> extends Base2 {
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a3: (x?: T) => T;
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}
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interface I9<T> extends Base2 {
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a3: (x: T) => T;
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}
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interface I10<T> extends Base2 {
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~~~
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!!! Interface 'I10<T>' incorrectly extends interface 'Base2':
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!!! Types of property 'a3' are incompatible:
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!!! Type '(x: T, y: T) => T' is not assignable to type '<T>(x: T) => T'.
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a3: (x: T, y: T) => T;
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}
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interface I11<T> extends Base2 {
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a4: () => T;
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}
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interface I12<T> extends Base2 {
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a4: (x?: T, y?: T) => T;
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}
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interface I13<T> extends Base2 {
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a4: (x: T) => T;
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}
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interface I14<T> extends Base2 {
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a4: (x: T, y: T) => T;
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}
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interface I15<T> extends Base2 {
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a5: () => T;
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}
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interface I16<T> extends Base2 {
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a5: (x?: T, y?: T) => T;
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}
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interface I17<T> extends Base2 {
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a5: (x: T) => T;
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}
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interface I18<T> extends Base2 {
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a5: (x: T, y: T) => T;
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}
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}
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module GenericSignaturesValid {
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interface Base2 {
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a: <T>() => T;
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a2: <T>(x?: T) => T;
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a3: <T>(x: T) => T;
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a4: <T>(x: T, y?: T) => T;
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a5: <T>(x?: T, y?: T) => T;
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}
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// BUG 833350
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interface I1 extends Base2 {
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a: <T>() => T; // ok, same number of required params
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}
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interface I2 extends Base2 {
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a: <T>(x?: T) => T; // error, not identical and contextual signature instatiation can't make inference from T to T
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}
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interface I3 extends Base2 {
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~~
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!!! Interface 'I3' incorrectly extends interface 'Base2':
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!!! Types of property 'a' are incompatible:
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!!! Type '<T>(x: T) => T' is not assignable to type '<T>() => T'.
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a: <T>(x: T) => T; // error, not identical and contextual signature instatiation can't make inference from T to T
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}
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interface I4 extends Base2 {
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a2: <T>() => T; // error, not identical and contextual signature instatiation can't make inference from T to T
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}
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interface I5 extends Base2 {
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a2: <T>(x?: T) => T; // ok, identical
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}
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interface I6 extends Base2 {
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a2: <T>(x: T) => T; // ok, same number of params
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}
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interface I7 extends Base2 {
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a3: <T>() => T; // error, no inferences for T so {} not assignable to {} in return type
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}
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interface I8 extends Base2 {
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a3: <T>(x?: T) => T; // ok, fewer required params
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}
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interface I9 extends Base2 {
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a3: <T>(x: T) => T; // ok, identical, same number of required params
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}
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interface I10 extends Base2 {
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~~~
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!!! Interface 'I10' incorrectly extends interface 'Base2':
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!!! Types of property 'a3' are incompatible:
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!!! Type '<T>(x: T, y: T) => T' is not assignable to type '<T>(x: T) => T'.
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a3: <T>(x: T, y: T) => T; // error, too many required params
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}
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interface I11 extends Base2 {
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a4: <T>() => T; // error, not identical and contextual signature instatiation can't make inference from T to T
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}
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interface I12 extends Base2 {
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a4: <T>(x?: T, y?: T) => T; // ok, fewer required params
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}
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interface I13 extends Base2 {
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a4: <T>(x: T) => T; // ok, same T of required params
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}
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interface I14 extends Base2 {
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a4: <T>(x: T, y: T) => T; // error, too many required params
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}
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interface I15 extends Base2 {
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a5: <T>() => T; // error, not identical and contextual signature instatiation can't make inference from T to T
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}
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interface I16 extends Base2 {
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a5: <T>(x?: T, y?: T) => T; // ok, fewer required params
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}
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interface I17 extends Base2 {
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a5: <T>(x: T) => T; // ok, all present params match
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}
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interface I18 extends Base2 {
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a5: <T>(x: T, y: T) => T; // ok, same number of params
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}
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} |