32 lines
604 B
TypeScript
32 lines
604 B
TypeScript
//// [infinitelyExpandingTypes4.ts]
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interface Query<T> {
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// ...
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groupBy<K>(keySelector: (item: T) => K): Query<Grouping<K, T>>;
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// ...
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}
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interface QueryEnumerator<T> {
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// ...
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groupBy<K>(keySelector: (item: T) => K): QueryEnumerator<Grouping<K, T>>;
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// ...
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}
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interface Grouping<K, T> extends Query<T> {
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key(): K;
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}
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var q1: Query<number>;
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var q2: QueryEnumerator<number>;
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var q3: Query<number>;
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q1 = q2; // should error
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q1 = q3; // should not error
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//// [infinitelyExpandingTypes4.js]
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var q1;
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var q2;
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var q3;
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q1 = q2; // should error
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q1 = q3; // should not error
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