Fix Iterator type in es6.d.ts

Author: JsonFreeman

src/lib/es6.d.ts

@@ -442,8 +442,8 @@ interface IteratorResult<T> {
 }
 
 interface Iterator<T> {
- next(): IteratorResult<T>;
- return?(value?: any): IteratorResult<T>;
+ next(value?: any): IteratorResult<T>;
+ return?(value?: T): IteratorResult<T>;
  throw?(e?: any): IteratorResult<T>;
 }
 

tests/baselines/reference/for-of30.errors.txt

@@ -3,7 +3,7 @@ tests/cases/conformance/es6/for-ofStatements/for-of30.ts(1,15): error TS2322: Ty
  Type '() => StringIterator' is not assignable to type '() => Iterator<string>'.
  Type 'StringIterator' is not assignable to type 'Iterator<string>'.
  Types of property 'return' are incompatible.
- Type 'number' is not assignable to type '(value?: any) => IteratorResult<string>'.
+ Type 'number' is not assignable to type '(value?: string) => IteratorResult<string>'.
 
 
 ==== tests/cases/conformance/es6/for-ofStatements/for-of30.ts (1 errors) ====
@@ -14,7 +14,7 @@ tests/cases/conformance/es6/for-ofStatements/for-of30.ts(1,15): error TS2322: Ty
 !!! error TS2322: Type '() => StringIterator' is not assignable to type '() => Iterator<string>'.
 !!! error TS2322: Type 'StringIterator' is not assignable to type 'Iterator<string>'.
 !!! error TS2322: Types of property 'return' are incompatible.
-!!! error TS2322: Type 'number' is not assignable to type '(value?: any) => IteratorResult<string>'.
+!!! error TS2322: Type 'number' is not assignable to type '(value?: string) => IteratorResult<string>'.
 
  class StringIterator {
  next() {

tests/baselines/reference/for-of31.errors.txt

@@ -3,7 +3,7 @@ tests/cases/conformance/es6/for-ofStatements/for-of31.ts(1,15): error TS2322: Ty
  Type '() => StringIterator' is not assignable to type '() => Iterator<string>'.
  Type 'StringIterator' is not assignable to type 'Iterator<string>'.
  Types of property 'next' are incompatible.
- Type '() => { value: string; }' is not assignable to type '() => IteratorResult<string>'.
+ Type '() => { value: string; }' is not assignable to type '(value?: any) => IteratorResult<string>'.
  Type '{ value: string; }' is not assignable to type 'IteratorResult<string>'.
  Property 'done' is missing in type '{ value: string; }'.
 
@@ -16,7 +16,7 @@ tests/cases/conformance/es6/for-ofStatements/for-of31.ts(1,15): error TS2322: Ty
 !!! error TS2322: Type '() => StringIterator' is not assignable to type '() => Iterator<string>'.
 !!! error TS2322: Type 'StringIterator' is not assignable to type 'Iterator<string>'.
 !!! error TS2322: Types of property 'next' are incompatible.
-!!! error TS2322: Type '() => { value: string; }' is not assignable to type '() => IteratorResult<string>'.
+!!! error TS2322: Type '() => { value: string; }' is not assignable to type '(value?: any) => IteratorResult<string>'.
 !!! error TS2322: Type '{ value: string; }' is not assignable to type 'IteratorResult<string>'.
 !!! error TS2322: Property 'done' is missing in type '{ value: string; }'.
 

tests/baselines/reference/iteratorSpreadInArray9.errors.txt

@@ -3,7 +3,7 @@ tests/cases/conformance/es6/spread/iteratorSpreadInArray9.ts(1,17): error TS2322
  Type '() => SymbolIterator' is not assignable to type '() => Iterator<symbol>'.
  Type 'SymbolIterator' is not assignable to type 'Iterator<symbol>'.
  Types of property 'next' are incompatible.
- Type '() => { value: symbol; }' is not assignable to type '() => IteratorResult<symbol>'.
+ Type '() => { value: symbol; }' is not assignable to type '(value?: any) => IteratorResult<symbol>'.
  Type '{ value: symbol; }' is not assignable to type 'IteratorResult<symbol>'.
  Property 'done' is missing in type '{ value: symbol; }'.
 
@@ -16,7 +16,7 @@ tests/cases/conformance/es6/spread/iteratorSpreadInArray9.ts(1,17): error TS2322
 !!! error TS2322: Type '() => SymbolIterator' is not assignable to type '() => Iterator<symbol>'.
 !!! error TS2322: Type 'SymbolIterator' is not assignable to type 'Iterator<symbol>'.
 !!! error TS2322: Types of property 'next' are incompatible.
-!!! error TS2322: Type '() => { value: symbol; }' is not assignable to type '() => IteratorResult<symbol>'.
+!!! error TS2322: Type '() => { value: symbol; }' is not assignable to type '(value?: any) => IteratorResult<symbol>'.
 !!! error TS2322: Type '{ value: symbol; }' is not assignable to type 'IteratorResult<symbol>'.
 !!! error TS2322: Property 'done' is missing in type '{ value: symbol; }'.