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Tests for union of construct signatures
If each type in U has construct signatures and the sets of construct signatures are identical ignoring return types, U has the same set of construct signatures, but with return types that are unions of the return types of the respective construct signatures from each type in U.
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‎tests/baselines/reference/unionTypeConstructSignatures.errors.txt‎

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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(9,47): error TS2345: Argument of type 'string' is not assignable to parameter of type 'number'.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(10,33): error TS2345: Argument of type 'boolean' is not assignable to parameter of type 'string'.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(15,33): error TS2345: Argument of type 'boolean' is not assignable to parameter of type 'string'.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(16,1): error TS2346: Supplied parameters do not match any signature of call target.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(19,1): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(20,1): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(21,1): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(24,1): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(25,1): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(26,1): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(29,1): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(30,1): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(31,1): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(36,53): error TS2345: Argument of type 'string' is not assignable to parameter of type 'number'.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(37,12): error TS2346: Supplied parameters do not match any signature of call target.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(40,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(41,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(42,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(43,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(46,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(47,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(48,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(49,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(55,49): error TS2345: Argument of type 'string' is not assignable to parameter of type 'number'.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(56,12): error TS2346: Supplied parameters do not match any signature of call target.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(59,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(60,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(61,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(62,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(63,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(66,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(67,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(68,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(69,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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tests/cases/conformance/types/union/unionTypeConstructSignatures.ts(70,12): error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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==== tests/cases/conformance/types/union/unionTypeConstructSignatures.ts (35 errors) ====
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var numOrDate: number | Date;
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var strOrBoolean: string | boolean;
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var strOrNum: string | number;
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// If each type in U has construct signatures and the sets of construct signatures are identical ignoring return types,
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// U has the same set of construct signatures, but with return types that are unions of the return types of the respective construct signatures from each type in U.
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var unionOfDifferentReturnType: { new (a: number): number; } | { new (a: number): Date; };
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numOrDate = new unionOfDifferentReturnType(10);
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strOrBoolean = new unionOfDifferentReturnType("hello"); // error
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~~~~~~~
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!!! error TS2345: Argument of type 'string' is not assignable to parameter of type 'number'.
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new unionOfDifferentReturnType1(true); // error in type of parameter
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~~~~
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!!! error TS2345: Argument of type 'boolean' is not assignable to parameter of type 'string'.
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var unionOfDifferentReturnType1: { new (a: number): number; new (a: string): string; } | { new (a: number): Date; new (a: string): boolean; };
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numOrDate = new unionOfDifferentReturnType1(10);
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strOrBoolean = new unionOfDifferentReturnType1("hello");
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new unionOfDifferentReturnType1(true); // error in type of parameter
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~~~~
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!!! error TS2345: Argument of type 'boolean' is not assignable to parameter of type 'string'.
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new unionOfDifferentReturnType1(); // error missing parameter
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2346: Supplied parameters do not match any signature of call target.
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var unionOfDifferentParameterTypes: { new (a: number): number; } | { new (a: string): Date; };
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new unionOfDifferentParameterTypes(10);// error - no call signatures
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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new unionOfDifferentParameterTypes("hello");// error - no call signatures
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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new unionOfDifferentParameterTypes();// error - no call signatures
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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var unionOfDifferentNumberOfSignatures: { new (a: number): number; } | { new (a: number): Date; new (a: string): boolean; };
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new unionOfDifferentNumberOfSignatures(); // error - no call signatures
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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new unionOfDifferentNumberOfSignatures(10); // error - no call signatures
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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new unionOfDifferentNumberOfSignatures("hello"); // error - no call signatures
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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var unionWithDifferentParameterCount: { new (a: string): string; } | { new (a: string, b: number): number; };
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new unionWithDifferentParameterCount();// no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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new unionWithDifferentParameterCount("hello");// no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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new unionWithDifferentParameterCount("hello", 10);// no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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var unionWithOptionalParameter1: { new (a: string, b?: number): string; } | { new (a: string, b?: number): number; };
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strOrNum = new unionWithOptionalParameter1('hello');
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strOrNum = new unionWithOptionalParameter1('hello', 10);
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strOrNum = new unionWithOptionalParameter1('hello', "hello"); // error in parameter type
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~~~~~~~
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!!! error TS2345: Argument of type 'string' is not assignable to parameter of type 'number'.
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strOrNum = new unionWithOptionalParameter1(); // error
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2346: Supplied parameters do not match any signature of call target.
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var unionWithOptionalParameter2: { new (a: string, b?: number): string; } | { new (a: string, b: number): number };
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strOrNum = new unionWithOptionalParameter2('hello'); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithOptionalParameter2('hello', 10); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithOptionalParameter2('hello', "hello"); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithOptionalParameter2(); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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var unionWithOptionalParameter3: { new (a: string, b?: number): string; } | { new (a: string): number; };
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strOrNum = new unionWithOptionalParameter3('hello'); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithOptionalParameter3('hello', 10); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithOptionalParameter3('hello', "hello"); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithOptionalParameter3(); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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var unionWithRestParameter1: { new (a: string, ...b: number[]): string; } | { new (a: string, ...b: number[]): number };
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strOrNum = new unionWithRestParameter1('hello');
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strOrNum = new unionWithRestParameter1('hello', 10);
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strOrNum = new unionWithRestParameter1('hello', 10, 11);
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strOrNum = new unionWithRestParameter1('hello', "hello"); // error in parameter type
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~~~~~~~
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!!! error TS2345: Argument of type 'string' is not assignable to parameter of type 'number'.
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strOrNum = new unionWithRestParameter1(); // error
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2346: Supplied parameters do not match any signature of call target.
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var unionWithRestParameter2: { new (a: string, ...b: number[]): string; } | { new (a: string, b: number): number };
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strOrNum = new unionWithRestParameter2('hello'); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithRestParameter2('hello', 10); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithRestParameter2('hello', 10, 11); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithRestParameter2('hello', "hello"); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithRestParameter2(); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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var unionWithRestParameter3: { new (a: string, ...b: number[]): string; } | { new (a: string): number };
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strOrNum = new unionWithRestParameter3('hello'); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithRestParameter3('hello', 10); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithRestParameter3('hello', 10, 11); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithRestParameter3('hello', "hello"); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.
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strOrNum = new unionWithRestParameter3(); // error no call signature
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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!!! error TS2351: Cannot use 'new' with an expression whose type lacks a call or construct signature.

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