48 lines
2.3 KiB
Plaintext
48 lines
2.3 KiB
Plaintext
==== tests/cases/conformance/expressions/conditonalOperator/conditionalOperatorWithoutIdenticalBCT.ts (12 errors) ====
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//Cond ? Expr1 : Expr2, Expr1 and Expr2 have no identical best common type
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class X { propertyX: any; propertyX1: number; propertyX2: string };
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class A extends X { propertyA: number };
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class B extends X { propertyB: string };
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var x: X;
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var a: A;
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var b: B;
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//Expect to have compiler errors
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//Be not contextually typed
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true ? a : b;
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~~~~~~~~~~~~
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!!! No best common type exists between 'A' and 'B'.
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var result1 = true ? a : b;
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~~~~~~~~~~~~
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!!! No best common type exists between 'A' and 'B'.
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//Be contextually typed and and bct is not identical
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var result2: A = true ? a : b;
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~~~~~~~
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!!! Type '{}' is not assignable to type 'A':
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!!! Property 'propertyA' is missing in type '{}'.
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~~~~~~~~~~~~
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!!! No best common type exists between 'A', 'A', and 'B'.
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var result3: B = true ? a : b;
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~~~~~~~
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!!! Type '{}' is not assignable to type 'B':
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!!! Property 'propertyB' is missing in type '{}'.
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~~~~~~~~~~~~
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!!! No best common type exists between 'B', 'A', and 'B'.
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var result4: (t: X) => number = true ? (m) => m.propertyX1 : (n) => n.propertyX2;
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~~~~~~~
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!!! Type '{}' is not assignable to type '(t: X) => number'.
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! No best common type exists between '(t: X) => number', '(m: X) => number', and '(n: X) => string'.
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var result5: (t: X) => string = true ? (m) => m.propertyX1 : (n) => n.propertyX2;
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~~~~~~~
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!!! Type '{}' is not assignable to type '(t: X) => string'.
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! No best common type exists between '(t: X) => string', '(m: X) => number', and '(n: X) => string'.
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var result6: (t: X) => boolean = true ? (m) => m.propertyX1 : (n) => n.propertyX2;
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~~~~~~~
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!!! Type '{}' is not assignable to type '(t: X) => boolean'.
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! No best common type exists between '(t: X) => boolean', '(m: X) => number', and '(n: X) => string'. |