Support 3.30

Author: fredemmott

composer.lock

@@ -18,10 +18,9 @@
 use namespace Facebook\TypeAssert;
 
 function from_type_structure<T>(TypeStructure<T> $ts): TypeSpec<T> {
-  /* HH_FIXME[4108] 3.21 is not aware of optional_shape_field */
   if ($ts['optional_shape_field'] ?? false) {
-    /* HH_FIXME[4108] 3.21 is not aware of optional_shape_field */
     $ts['optional_shape_field'] = false;
+    /* HH_IGNORE_ERROR[4110] */
     return new OptionalSpec(from_type_structure($ts));
   }
   if ($ts['nullable'] ?? false) {

src/TypeSpec/__Private/from_type_structure.php

@@ -469,6 +469,7 @@ public function testUnsupportedType(): void {
     $ts = type_structure(TypeConstants::class, 'TStringArray');
     $ts['kind'] = TypeStructureKind::OF_GENERIC;
 
+    /* HH_IGNORE_ERROR[4110] */
     expect(() ==> TypeAssert\matches_type_structure($ts, null))->toThrow(
       UnsupportedTypeException::class,
     );