42 lines
1 KiB
TypeScript
42 lines
1 KiB
TypeScript
//// [implementGenericWithMismatchedTypes.ts]
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// no errors because in the derived types the best common type for T's value is Object
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// and that matches the original signature for assignability since we treat its T's as Object
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interface IFoo<T> {
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foo(x: T): T;
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}
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class C<T> implements IFoo<T> { // error
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foo(x: string): number {
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return null;
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}
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}
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interface IFoo2<T> {
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foo(x: T): T;
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}
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class C2<T> implements IFoo2<T> { // error
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foo<Tstring>(x: Tstring): number {
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return null;
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}
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}
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//// [implementGenericWithMismatchedTypes.js]
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// no errors because in the derived types the best common type for T's value is Object
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// and that matches the original signature for assignability since we treat its T's as Object
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var C = (function () {
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function C() {
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}
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C.prototype.foo = function (x) {
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return null;
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};
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return C;
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})();
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var C2 = (function () {
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function C2() {
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}
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C2.prototype.foo = function (x) {
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return null;
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};
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return C2;
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})();
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