TypeScript/tests/cases/conformance/es6/for-ofStatements/for-of31.ts
Ron Buckton e8bf9584aa
Improve type checking and inference for Generators and Async Generators (#30790)
* Improve typing for Generators and Async Generators

* Add TReturn and TNext to Iterator, IterableIterator, etc.

* Update ts internal Iterator to be assignable from global Iterator

* Make 'done' optional in IteratorYieldResult

* Revert Iterable and IterableIterator to simpler versions plus other fixes

* Add additional inference tests

* Added additional tests

* PR cleanup and minor async iteration type fix

* Updated diagnostics message and added non-strict tests

* Fix expected arity of Iterator/AsyncIterator
2019-07-03 21:55:59 -07:00

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TypeScript

//@target: ES6
class StringIterator {
next() {
return {
// no done property
value: ""
}
}
[Symbol.iterator]() {
return this;
}
}
for (var v of new StringIterator) { }