85 lines
2.5 KiB
TypeScript
85 lines
2.5 KiB
TypeScript
interface I1 {
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IM1():void[];
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}
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class C1 implements I1 {
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IM1():void[] {return null;}
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C1M1():C1[] {return null;}
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}
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class C2 extends C1 {
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C2M1():C2[] { return null;}
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}
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class C3 {
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CM3M1() { return 3;}
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}
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/*
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This behaves unexpectedly with the following types:
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Type 1 of any[]:
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* Type 2 of the following throws an error but shouldn't: () => void[], SomeClass[], and {one: 1}[].
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* Type 2 of the following doesn't throw an error but should: {one: 1}, new() => SomeClass, SomeClass.
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*/
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var a1 : any = null;
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var c1 : C1 = new C1();
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var i1 : I1 = c1;
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var c2 : C2 = new C2();
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var c3 : C3 = new C3();
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var o1 = {one : 1};
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var f1 = function () { return new C1();}
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var arr_any: any[] = [];
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var arr_i1: I1[] = [];
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var arr_c1: C1[] = [];
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var arr_c2: C2[] = [];
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var arr_i1_2: I1[] = [];
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var arr_c1_2: C1[] = [];
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var arr_c2_2: C2[] = [];
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var arr_c3: C3[] = [];
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var i1_error: I1 = []; // should be an error - is
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var c1_error: C1 = []; // should be an error - is
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var c2_error: C2 = []; // should be an error - is
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var c3_error: C3 = []; // should be an error - is
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arr_any = arr_i1; // should be ok - is
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arr_any = arr_c1; // should be ok - is
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arr_any = arr_c2; // should be ok - is
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arr_any = arr_c3; // should be ok - is
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arr_i1 = arr_i1; // should be ok - subtype relationship - is
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arr_i1 = arr_c1; // should be ok - subtype relationship - is
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arr_i1 = arr_c2; // should be ok - subtype relationship - is
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arr_i1 = arr_c3; // should be an error - is
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arr_c1 = arr_c1; // should be ok - subtype relationship - is
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arr_c1 = arr_c2; // should be ok - subtype relationship - is
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arr_c1 = arr_i1; // should be an error - is
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arr_c1 = arr_c3; // should be an error - is
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arr_c2 = arr_c2; // should be ok - subtype relationship - is
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arr_c2 = arr_c1; // should be an error - subtype relationship - is
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arr_c2 = arr_i1; // should be an error - subtype relationship - is
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arr_c2 = arr_c3; // should be an error - is
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// "clean up bug" occurs at this point
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// if you move these three expressions to another file, they raise an error
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// something to do with state from the above propagating forward?
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arr_c3 = arr_c2_2; // should be an error - is
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arr_c3 = arr_c1_2; // should be an error - is
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arr_c3 = arr_i1_2; // should be an error - is
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arr_any = f1; // should be an error - is
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arr_any = o1; // should be an error - is
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arr_any = a1; // should be ok - is
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arr_any = c1; // should be an error - is
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arr_any = c2; // should be an error - is
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arr_any = c3; // should be an error - is
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arr_any = i1; // should be an error - is
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