0d284e6c26
* Add support for abstract constructor types * Add backwards-compatible overloads for creating/updating constructor types * Reverting use of 'abstract' in lib/es5.d.ts due to eslint issues * Update baseline due to reverting lib * Add error for failing to mark an mixin class as abstract * Fix declaration/quick info for abstract construct signatures
50 lines
1.9 KiB
Plaintext
50 lines
1.9 KiB
Plaintext
=== tests/cases/conformance/classes/mixinAbstractClasses.2.ts ===
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interface Mixin {
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mixinMethod(): void;
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>mixinMethod : () => void
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}
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function Mixin<TBaseClass extends abstract new (...args: any) => any>(baseClass: TBaseClass): TBaseClass & (abstract new (...args: any) => Mixin) {
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>Mixin : <TBaseClass extends abstract new (...args: any) => any>(baseClass: TBaseClass) => TBaseClass & (abstract new (...args: any) => Mixin)
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>args : any
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>baseClass : TBaseClass
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>args : any
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// error expected: A mixin class that extends from a type variable containing an abstract construct signature must also be declared 'abstract'.
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class MixinClass extends baseClass implements Mixin {
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>MixinClass : MixinClass
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>baseClass : TBaseClass
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mixinMethod() {
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>mixinMethod : () => void
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}
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}
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return MixinClass;
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>MixinClass : { new (...args: any): MixinClass; prototype: Mixin<any>.MixinClass; } & TBaseClass
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}
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abstract class AbstractBase {
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>AbstractBase : AbstractBase
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abstract abstractBaseMethod(): void;
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>abstractBaseMethod : () => void
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}
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const MixedBase = Mixin(AbstractBase);
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>MixedBase : typeof AbstractBase & (abstract new (...args: any) => Mixin)
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>Mixin(AbstractBase) : typeof AbstractBase & (abstract new (...args: any) => Mixin)
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>Mixin : <TBaseClass extends abstract new (...args: any) => any>(baseClass: TBaseClass) => TBaseClass & (abstract new (...args: any) => Mixin)
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>AbstractBase : typeof AbstractBase
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// error expected: Non-abstract class 'DerivedFromAbstract' does not implement inherited abstract member 'abstractBaseMethod' from class 'AbstractBase & Mixin'.
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class DerivedFromAbstract extends MixedBase {
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>DerivedFromAbstract : DerivedFromAbstract
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>MixedBase : AbstractBase & Mixin
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}
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// error expected: Cannot create an instance of an abstract class.
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new MixedBase();
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>new MixedBase() : any
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>MixedBase : typeof AbstractBase & (abstract new (...args: any) => Mixin)
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