107 lines
2.7 KiB
Plaintext
107 lines
2.7 KiB
Plaintext
==== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithObjectMembersOptionality.ts (6 errors) ====
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// Derived member is not optional but base member is, should be ok
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class Base { foo: string; }
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class Derived extends Base { bar: string; }
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class Derived2 extends Derived { baz: string; }
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module TargetHasOptional {
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// targets
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interface C {
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opt?: Base
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}
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var c: C;
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var a: { opt?: Base; }
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var b: typeof a = { opt: new Base() }
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// sources
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interface D {
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opt: Base;
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}
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interface E {
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opt: Derived;
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}
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interface F {
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opt?: Derived;
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}
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var d: D;
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var e: E;
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var f: F;
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// all ok
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c = d;
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c = e;
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c = f;
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c = a;
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a = d;
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a = e;
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a = f;
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a = c;
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b = d;
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b = e;
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b = f;
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b = a;
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b = c;
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}
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module SourceHasOptional {
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// targets
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interface C {
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opt: Base
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}
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var c: C;
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var a: { opt: Base; }
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var b = { opt: new Base() }
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// sources
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interface D {
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opt?: Base;
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}
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interface E {
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opt?: Derived;
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}
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interface F {
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opt: Derived;
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}
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var d: D;
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var e: E;
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var f: F;
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c = d; // error
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~
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!!! Type 'D' is not assignable to type 'C':
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!!! Required property 'opt' cannot be reimplemented with optional property in 'D'.
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c = e; // error
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~
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!!! Type 'E' is not assignable to type 'C':
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!!! Required property 'opt' cannot be reimplemented with optional property in 'E'.
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c = f; // ok
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c = a; // ok
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a = d; // error
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~
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!!! Type 'D' is not assignable to type '{ opt: Base; }':
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!!! Required property 'opt' cannot be reimplemented with optional property in 'D'.
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a = e; // error
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~
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!!! Type 'E' is not assignable to type '{ opt: Base; }':
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!!! Required property 'opt' cannot be reimplemented with optional property in 'E'.
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a = f; // ok
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a = c; // ok
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b = d; // error
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~
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!!! Type 'D' is not assignable to type '{ opt: Base; }':
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!!! Required property 'opt' cannot be reimplemented with optional property in 'D'.
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b = e; // error
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~
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!!! Type 'E' is not assignable to type '{ opt: Base; }':
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!!! Required property 'opt' cannot be reimplemented with optional property in 'E'.
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b = f; // ok
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b = a; // ok
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b = c; // ok
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} |