76 lines
2.4 KiB
Plaintext
76 lines
2.4 KiB
Plaintext
==== tests/cases/conformance/functions/functionImplementationErrors.ts (8 errors) ====
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// FunctionExpression with no return type annotation with multiple return statements with unrelated types
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var f1 = function () {
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~~~~~~~~~~~~~
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return '';
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~~~~~~~~~~~~~~
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return 3;
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~~~~~~~~~~~~~
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};
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~
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!!! No best common type exists among return expressions.
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var f2 = function x() {
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~~~~~~~~~~~~~~
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return '';
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~~~~~~~~~~~~~~
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return 3;
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~~~~~~~~~~~~~
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};
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~
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!!! No best common type exists among return expressions.
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var f3 = () => {
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~~~~~~~
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return '';
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~~~~~~~~~~~~~~
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return 3;
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~~~~~~~~~~~~~
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};
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~
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!!! No best common type exists among return expressions.
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// FunctionExpression with no return type annotation with return branch of number[] and other of string[]
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var f4 = function () {
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~~~~~~~~~~~~~
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if (true) {
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~~~~~~~~~~~~~~~
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return [''];
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~~~~~~~~~~~~~~~~~~~~
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} else {
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~~~~~~~~~~~~
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return [1];
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~~~~~~~~~~~~~~~~~~~
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}
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~~~~~
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}
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~
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!!! No best common type exists among return expressions.
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// Function implemetnation with non -void return type annotation with no return
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function f5(): number {
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~~~~~~
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!!! A function whose declared type is neither 'void' nor 'any' must return a value or consist of a single 'throw' statement.
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}
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var m;
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// Function signature with parameter initializer referencing in scope local variable
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function f6(n = m) {
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~
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!!! Initializer of parameter 'n' cannot reference identifier 'm' declared after it.
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var m = 4;
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}
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// Function signature with initializer referencing other parameter to the right
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function f7(n = m, m?) {
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~
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!!! Initializer of parameter 'n' cannot reference identifier 'm' declared after it.
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}
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// FunctionExpression with non -void return type annotation with a throw, no return, and other code
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// Should be error but isn't
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undefined === function (): number {
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~~~~~~
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!!! A function whose declared type is neither 'void' nor 'any' must return a value or consist of a single 'throw' statement.
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throw undefined;
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var x = 4;
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};
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