26 lines
570 B
JavaScript
26 lines
570 B
JavaScript
// @noflow
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// make sure tuples are type arguments (as used e.g. when viewing maps as
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// key/value iterables) work
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interface SomeIterator<T> { }
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interface SomeIterable<T> {
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it(): SomeIterator<T>;
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}
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declare class SomeMap<K,V> {
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it(): SomeIterator<[K,V]>;
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set(k: K, v: V): void;
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}
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declare class ImmutableMap<K,V> { }
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declare function convert<K,V>(iter: SomeIterable<[K,V]>): ImmutableMap<K,V>;
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function foo(): ImmutableMap<string, boolean> {
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const countersGlobalMap = new SomeMap();
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countersGlobalMap.set("", false);
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return convert(countersGlobalMap);
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}
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