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<?hh class Bar{} class Foo implements ArrayAccess<string, Bar> { public function offsetExists(string $offset): bool { return true;} public function offsetGet(string $offset): Bar { return new Bar();} public function offsetSet(string $offset, Bar $value): this { return $this;} public function offsetUnset(string $offset): this { return $this;} } function main(): void { $x = new Foo(); $x->offsetSet("Hi", new Bar()); }
Output for git.master, git.master_jit, rfc.property-hooks
<?hh class Bar{} class Foo implements ArrayAccess<string, Bar> { public function offsetExists(string $offset): bool { return true;} public function offsetGet(string $offset): Bar { return new Bar();} public function offsetSet(string $offset, Bar $value): this { return $this;} public function offsetUnset(string $offset): this { return $this;} } function main(): void { $x = new Foo(); $x->offsetSet("Hi", new Bar()); }

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