33 lines
1.1 KiB
Text
33 lines
1.1 KiB
Text
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==== tests/cases/conformance/types/typeRelationships/recursiveTypes/infiniteExpansionThroughInstantiation.ts (2 errors) ====
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// instantiating a derived type can cause an infinitely expanding type reference to be generated
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interface List<T> {
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data: T;
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next: List<T>;
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owner: OwnerList<T>;
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}
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// will have an owner property that is an infinitely expanding type reference
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interface OwnerList<U> extends List<List<U>> {
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name: string;
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}
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var list: List<string>;
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var ownerList: OwnerList<string>;
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list = ownerList;
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~~~~
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!!! Type 'OwnerList<string>' is not assignable to type 'List<string>':
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!!! Types of property 'data' are incompatible:
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!!! Type 'List<string>' is not assignable to type 'string'.
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function other<T>(x: T) {
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var list: List<T>;
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var ownerList: OwnerList<T>;
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list = ownerList;
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~~~~
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!!! Type 'OwnerList<T>' is not assignable to type 'List<T>':
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!!! Types of property 'data' are incompatible:
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!!! Type 'List<T>' is not assignable to type 'T'.
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}
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