71 lines
2.5 KiB
Plaintext
71 lines
2.5 KiB
Plaintext
==== tests/cases/conformance/expressions/binaryOperators/additionOperator/additionOperatorWithTypeParameter.ts (16 errors) ====
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// type parameter type is not a valid operand of addition operator
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enum E { a, b }
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function foo<T, U>(t: T, u: U) {
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var a: any;
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var b: boolean;
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var c: number;
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var d: string;
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var e: Object;
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var g: E;
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var f: void;
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// type parameter as left operand
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var r1: any = t + a; // ok, one operand is any
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var r2 = t + b;
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~~~~~
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!!! Operator '+' cannot be applied to types 'T' and 'boolean'.
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var r3 = t + c;
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~~~~~
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!!! Operator '+' cannot be applied to types 'T' and 'number'.
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var r4 = t + d; // ok, one operand is string
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var r5 = t + e;
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~~~~~
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!!! Operator '+' cannot be applied to types 'T' and 'Object'.
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var r6 = t + g;
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~~~~~
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!!! Operator '+' cannot be applied to types 'T' and 'E'.
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var r7 = t + f;
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~~~~~
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!!! Operator '+' cannot be applied to types 'T' and 'void'.
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// type parameter as right operand
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var r8 = a + t; // ok, one operand is any
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var r9 = b + t;
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~~~~~
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!!! Operator '+' cannot be applied to types 'boolean' and 'T'.
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var r10 = c + t;
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~~~~~
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!!! Operator '+' cannot be applied to types 'number' and 'T'.
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var r11 = d + t; // ok, one operand is string
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var r12 = e + t;
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~~~~~
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!!! Operator '+' cannot be applied to types 'Object' and 'T'.
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var r13 = g + t;
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~~~~~
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!!! Operator '+' cannot be applied to types 'E' and 'T'.
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var r14 = f + t;
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~~~~~
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!!! Operator '+' cannot be applied to types 'void' and 'T'.
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// other cases
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var r15 = t + null;
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~~~~~~~~
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!!! Operator '+' cannot be applied to types 'T' and 'T'.
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var r16 = t + undefined;
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~~~~~~~~~~~~~
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!!! Operator '+' cannot be applied to types 'T' and 'T'.
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var r17 = t + t;
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~~~~~
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!!! Operator '+' cannot be applied to types 'T' and 'T'.
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var r18 = t + u;
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~~~~~
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!!! Operator '+' cannot be applied to types 'T' and 'U'.
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var r19 = t + (() => { });
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~~~~~~~~~~~~~~~
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!!! Operator '+' cannot be applied to types 'T' and '() => void'.
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var r20 = t + [];
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~~~~~~
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!!! Operator '+' cannot be applied to types 'T' and 'undefined[]'.
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} |