63 lines
1.2 KiB
TypeScript
63 lines
1.2 KiB
TypeScript
// an interface may have multiple bases with properties of the same name as long as the interface's implementation satisfies all base type versions
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interface Base1 {
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x: {
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a: string;
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}
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}
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interface Base2 {
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x: {
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b: string;
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}
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}
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interface Derived extends Base1, Base2 {
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x: {
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a: string; b: string;
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}
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}
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interface Derived2 extends Base1, Base2 { // error
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x: {
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a: string; b: number;
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}
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}
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module Generic {
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interface Base1<T> {
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x: {
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a: T;
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}
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}
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interface Base2<T> {
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x: {
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b: T;
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}
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}
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interface Derived<T> extends Base1<string>, Base2<number> {
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x: {
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a: string; b: number;
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}
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}
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interface Derived2<T, U> extends Base1<T>, Base2<U> {
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x: {
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a: T; b: U;
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}
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}
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interface Derived3<T> extends Base1<number>, Base2<number> { } // error
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interface Derived4<T> extends Base1<number>, Base2<number> { // error
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x: {
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a: T; b: T;
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}
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}
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interface Derived5<T> extends Base1<T>, Base2<T> { // error
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x: T;
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}
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} |