Fix new hack errors in nightlies

Author: fredemmott

.travis.yml

@@ -2,7 +2,6 @@ sudo: required
 language: generic
 services: docker
 env:
-- HHVM_VERSION=latest
 - HHVM_VERSION=nightly
 install:
 - docker pull hhvm/hhvm:$HHVM_VERSION

composer.json

@@ -10,6 +10,6 @@
   },
   "require-dev": {
     "hhvm/hhvm-autoload": "^2.0",
-    "hhvm/hhast": "^4.0"
+    "hhvm/hhast": "^4.1"
   }
 }

composer.lock

@@ -512,15 +512,15 @@ abstract class Assert {
       if ($actual is KeyedContainer<_, _>) {
         $actual_value = idx($actual, $key ?as arraykey);
         $part = '['.\var_export($key, true).']';
-      } else if (is_object($actual)) {
+      } else if (\is_object($actual)) {
         $actual_value = /* UNSAFE_EXPR */ $actual->$key;
         $part = "->".$key;
       } else {
         $actual_value = null;
         $part = null;
       }
 
-      if (is_any_array($value) || is_object($value)) {
+      if (is_any_array($value) || \is_object($value)) {
         $this->assertSubset($value, $actual_value, $msg, $path.$part);
       } else {
         $this->assertEquals($value, $actual_value, $msg."\nKey: ".$path.$part);

src/Assert.hack

@@ -295,7 +295,7 @@ class ExpectObj<T> extends Assert {
     /* HH_FIXME[4110] KeyedContainer<_, _> always has arraykey keys */
     $this->assertKeyAndValueEquals(
       $expected as KeyedContainer<_, _>,
-      is_array($value) ? $value : [],
+      \is_array($value) ? $value : [],
       $msg,
     );
   }

src/ExpectObj.hack

@@ -11,30 +11,30 @@ namespace Facebook\FBExpect;
 
 function is_any_array(mixed $value): bool {
   return (
-    is_array($value) ||
+    \is_array($value) ||
     ($value is dict<_, _>) ||
     ($value is vec<_>) ||
     ($value is keyset<_>)
   );
 }
 
 function not_hack_array(mixed $value): mixed {
-  if (is_any_array($value) && !is_array($value)) {
+  if (is_any_array($value) && !\is_array($value)) {
     /* HH_IGNORE_ERROR[4007] sketchy array cast */
     return (array) $value;
   }
   return $value;
 }
 
 function print_type(mixed $value): string {
-  if (is_object($value)) {
+  if (\is_object($value)) {
     return \get_class($value);
   }
   return \gettype($value);
 }
 
 function is_iterable(mixed $value): bool {
-  return is_array($value) || (is_object($value) && ($value instanceof Traversable));
+  return \is_array($value) || (\is_object($value) && ($value instanceof Traversable));
 }
 
 function is_type(mixed $value): bool {