TypeScript/tests/baselines/reference/functionImplementationErrors.errors.txt

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tests/cases/conformance/functions/functionImplementationErrors.ts(2,10): error TS2354: No best common type exists among return expressions.
tests/cases/conformance/functions/functionImplementationErrors.ts(6,19): error TS2354: No best common type exists among return expressions.
tests/cases/conformance/functions/functionImplementationErrors.ts(10,10): error TS2354: No best common type exists among return expressions.
tests/cases/conformance/functions/functionImplementationErrors.ts(16,10): error TS2354: No best common type exists among return expressions.
tests/cases/conformance/functions/functionImplementationErrors.ts(25,16): error TS2355: A function whose declared type is neither 'void' nor 'any' must return a value or consist of a single 'throw' statement.
tests/cases/conformance/functions/functionImplementationErrors.ts(30,17): error TS2373: Initializer of parameter 'n' cannot reference identifier 'm' declared after it.
tests/cases/conformance/functions/functionImplementationErrors.ts(35,17): error TS2373: Initializer of parameter 'n' cannot reference identifier 'm' declared after it.
tests/cases/conformance/functions/functionImplementationErrors.ts(40,28): error TS2355: A function whose declared type is neither 'void' nor 'any' must return a value or consist of a single 'throw' statement.
tests/cases/conformance/functions/functionImplementationErrors.ts(49,10): error TS2354: No best common type exists among return expressions.
tests/cases/conformance/functions/functionImplementationErrors.ts(53,10): error TS2354: No best common type exists among return expressions.
tests/cases/conformance/functions/functionImplementationErrors.ts(57,11): error TS2354: No best common type exists among return expressions.
tests/cases/conformance/functions/functionImplementationErrors.ts(61,10): error TS2354: No best common type exists among return expressions.
tests/cases/conformance/functions/functionImplementationErrors.ts(65,11): error TS2354: No best common type exists among return expressions.
tests/cases/conformance/functions/functionImplementationErrors.ts(69,11): error TS2354: No best common type exists among return expressions.
==== tests/cases/conformance/functions/functionImplementationErrors.ts (14 errors) ====
// FunctionExpression with no return type annotation with multiple return statements with unrelated types
var f1 = function () {
~~~~~~~~
!!! error TS2354: No best common type exists among return expressions.
return '';
return 3;
};
var f2 = function x() {
~
!!! error TS2354: No best common type exists among return expressions.
return '';
return 3;
};
var f3 = () => {
~~~~~~~
return '';
~~~~~~~~~~~~~~
return 3;
~~~~~~~~~~~~~
};
~
!!! error TS2354: No best common type exists among return expressions.
// FunctionExpression with no return type annotation with return branch of number[] and other of string[]
var f4 = function () {
~~~~~~~~
!!! error TS2354: No best common type exists among return expressions.
if (true) {
return [''];
} else {
return [1];
}
}
// Function implemetnation with non -void return type annotation with no return
function f5(): number {
~~~~~~
!!! error TS2355: A function whose declared type is neither 'void' nor 'any' must return a value or consist of a single 'throw' statement.
}
var m;
// Function signature with parameter initializer referencing in scope local variable
function f6(n = m) {
~
!!! error TS2373: Initializer of parameter 'n' cannot reference identifier 'm' declared after it.
var m = 4;
}
// Function signature with initializer referencing other parameter to the right
function f7(n = m, m?) {
~
!!! error TS2373: Initializer of parameter 'n' cannot reference identifier 'm' declared after it.
}
// FunctionExpression with non -void return type annotation with a throw, no return, and other code
// Should be error but isn't
undefined === function (): number {
~~~~~~
!!! error TS2355: A function whose declared type is neither 'void' nor 'any' must return a value or consist of a single 'throw' statement.
throw undefined;
var x = 4;
};
class Base { private x; }
class AnotherClass { private y; }
class Derived1 extends Base { private m; }
class Derived2 extends Base { private n; }
function f8() {
~~
!!! error TS2354: No best common type exists among return expressions.
return new Derived1();
return new Derived2();
}
var f9 = function () {
~~~~~~~~
!!! error TS2354: No best common type exists among return expressions.
return new Derived1();
return new Derived2();
};
var f10 = () => {
~~~~~~~
return new Derived1();
~~~~~~~~~~~~~~~~~~~~~~~~~~
return new Derived2();
~~~~~~~~~~~~~~~~~~~~~~~~~~
};
~
!!! error TS2354: No best common type exists among return expressions.
function f11() {
~~~
!!! error TS2354: No best common type exists among return expressions.
return new Base();
return new AnotherClass();
}
var f12 = function () {
~~~~~~~~
!!! error TS2354: No best common type exists among return expressions.
return new Base();
return new AnotherClass();
};
var f13 = () => {
~~~~~~~
return new Base();
~~~~~~~~~~~~~~~~~~~~~~
return new AnotherClass();
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
};
~
!!! error TS2354: No best common type exists among return expressions.