Fixed getContextuallyTypedParameterType for IIFEs without arguments (microsoft#715)

Author: Andarist

internal/checker/checker.go

@@ -27110,7 +27110,7 @@ func (c *Checker) getContextuallyTypedParameterType(parameter *ast.Node) *Type {
 		return nil
 	}
 	iife := ast.GetImmediatelyInvokedFunctionExpression(fn)
-	if iife != nil && len(iife.Arguments()) != 0 {
+	if iife != nil {
 		args := c.getEffectiveCallArguments(iife)
 		indexOfParameter := slices.Index(fn.Parameters(), parameter)
 		if hasDotDotDotToken(parameter) {

testdata/baselines/reference/submodule/conformance/classWithStaticFieldInParameterBindingPattern(target=es2015).errors.txt

@@ -1,22 +1,16 @@
-classWithStaticFieldInParameterBindingPattern.2.ts(3,6): error TS2537: Type '{}' has no matching index signature for type 'number'.
 classWithStaticFieldInParameterBindingPattern.2.ts(3,20): error TS2373: Parameter '{ [class extends C { static x = 1 }.x]: b = "" }' cannot reference identifier 'C' declared after it.
-classWithStaticFieldInParameterBindingPattern.2.ts(6,6): error TS2537: Type '{}' has no matching index signature for type 'number'.
 classWithStaticFieldInParameterBindingPattern.2.ts(6,57): error TS2373: Parameter 'd' cannot reference identifier 'x' declared after it.
 
 
-==== classWithStaticFieldInParameterBindingPattern.2.ts (4 errors) ====
+==== classWithStaticFieldInParameterBindingPattern.2.ts (2 errors) ====
     // https://github.com/microsoft/TypeScript/issues/36295
     class C {}
     (({ [class extends C { static x = 1 }.x]: b = "" }) => { var C; })();
-         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-!!! error TS2537: Type '{}' has no matching index signature for type 'number'.
                        ~
 !!! error TS2373: Parameter '{ [class extends C { static x = 1 }.x]: b = "" }' cannot reference identifier 'C' declared after it.
 
     const x = "";
     (({ [class extends C { static x = 1 }.x]: b = "" }, d = x) => { var x; })();
-         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-!!! error TS2537: Type '{}' has no matching index signature for type 'number'.
                                                             ~
 !!! error TS2373: Parameter 'd' cannot reference identifier 'x' declared after it.
 

testdata/baselines/reference/submodule/conformance/classWithStaticFieldInParameterBindingPattern(target=es2015).errors.txt.diff

@@ -1,22 +1,16 @@
-classWithStaticFieldInParameterBindingPattern.2.ts(3,6): error TS2537: Type '{}' has no matching index signature for type 'number'.
 classWithStaticFieldInParameterBindingPattern.2.ts(3,20): error TS2373: Parameter '{ [class extends C { static x = 1 }.x]: b = "" }' cannot reference identifier 'C' declared after it.
-classWithStaticFieldInParameterBindingPattern.2.ts(6,6): error TS2537: Type '{}' has no matching index signature for type 'number'.
 classWithStaticFieldInParameterBindingPattern.2.ts(6,57): error TS2373: Parameter 'd' cannot reference identifier 'x' declared after it.
 
 
-==== classWithStaticFieldInParameterBindingPattern.2.ts (4 errors) ====
+==== classWithStaticFieldInParameterBindingPattern.2.ts (2 errors) ====
     // https://github.com/microsoft/TypeScript/issues/36295
     class C {}
     (({ [class extends C { static x = 1 }.x]: b = "" }) => { var C; })();
-         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-!!! error TS2537: Type '{}' has no matching index signature for type 'number'.
                        ~
 !!! error TS2373: Parameter '{ [class extends C { static x = 1 }.x]: b = "" }' cannot reference identifier 'C' declared after it.
 
     const x = "";
     (({ [class extends C { static x = 1 }.x]: b = "" }, d = x) => { var x; })();
-         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-!!! error TS2537: Type '{}' has no matching index signature for type 'number'.
                                                             ~
 !!! error TS2373: Parameter 'd' cannot reference identifier 'x' declared after it.