JavaScript heap out of memory

[tutorgaming]

After parsing for a while at 5Hz, I found that after a short period of time the node console was shown these errors.

<--- Last few GCs --->

944243 ms: Mark-sweep 1378.5 (1435.0) -> 1378.5 (1435.0) MB, 2303.3 / 0.0 ms [allocation failure] [GC in old space requested].
946647 ms: Mark-sweep 1378.5 (1435.0) -> 1378.5 (1408.0) MB, 2402.1 / 0.0 ms (+ 1.2 ms in 1 steps since start of marking, biggest step 1.2 ms) [last resort gc].
949042 ms: Mark-sweep 1378.5 (1408.0) -> 1378.5 (1408.0) MB, 2394.5 / 0.0 ms [last resort gc].

<--- JS stacktrace --->

==== JS stack trace =========================================

Security context: 0x506fe8cfb39
1: inspect(aka inspect) [util.js:180] [pc=0x29d06c540595] (this=0x506fe804381 ,obj=73,opts=0x506fe804381 )
2: arguments adaptor frame: 1->2
3: /* anonymous /(aka / anonymous */) [util.js:~65] [pc=0x29d06c7164e7] (this=0x506fe804201 ,f=73)
4: log [console.js:~42] [pc=0x29d06c51af96] (this=0x2188d448aab1 <a Console with map 0x2bfbfabab1a1>)
5: argu...

FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory
1: node::Abort() [/usr/local/bin/node]
2: node::FatalException(v8::Isolate*, v8::Localv8::Value, v8::Localv8::Message) [/usr/local/bin/node]
3: v8::internal::V8::FatalProcessOutOfMemory(char const*, bool) [/usr/local/bin/node]
4: v8::internal::Factory::NewTransitionArray(int) [/usr/local/bin/node]
5: v8::internal::TransitionArray::Insert(v8::internal::Handlev8::internal::Map, v8::internal::Handlev8::internal::Name, v8::internal::Handlev8::internal::Map, v8::internal::SimpleTransitionFlag) [/usr/local/bin/node]
6: v8::internal::Map::CopyReplaceDescriptors(v8::internal::Handlev8::internal::Map, v8::internal::Handlev8::internal::DescriptorArray, v8::internal::Handlev8::internal::LayoutDescriptor, v8::internal::TransitionFlag, v8::internal::MaybeHandlev8::internal::Name, char const*, v8::internal::SimpleTransitionFlag) [/usr/local/bin/node]
7: v8::internal::Map::CopyAddDescriptor(v8::internal::Handlev8::internal::Map, v8::internal::Descriptor*, v8::internal::TransitionFlag) [/usr/local/bin/node]
8: v8::internal::Map::CopyWithField(v8::internal::Handlev8::internal::Map, v8::internal::Handlev8::internal::Name, v8::internal::Handlev8::internal::FieldType, v8::internal::PropertyAttributes, v8::internal::Representation, v8::internal::TransitionFlag) [/usr/local/bin/node]
9: v8::internal::Map::TransitionToDataProperty(v8::internal::Handlev8::internal::Map, v8::internal::Handlev8::internal::Name, v8::internal::Handlev8::internal::Object, v8::internal::PropertyAttributes, v8::internal::Object::StoreFromKeyed) [/usr/local/bin/node]
10: v8::internal::LookupIterator::PrepareTransitionToDataProperty(v8::internal::Handlev8::internal::JSObject, v8::internal::Handlev8::internal::Object, v8::internal::PropertyAttributes, v8::internal::Object::StoreFromKeyed) [/usr/local/bin/node]
11: v8::internal::Object::AddDataProperty(v8::internal::LookupIterator*, v8::internal::Handlev8::internal::Object, v8::internal::PropertyAttributes, v8::internal::Object::ShouldThrow, v8::internal::Object::StoreFromKeyed) [/usr/local/bin/node]
12: v8::internal::Runtime::SetObjectProperty(v8::internal::Isolate*, v8::internal::Handlev8::internal::Object, v8::internal::Handlev8::internal::Object, v8::internal::Handlev8::internal::Object, v8::internal::LanguageMode) [/usr/local/bin/node]
13: v8::internal::Builtin_Impl_ObjectAssign(v8::internal::(anonymous namespace)::BuiltinArguments<(v8::internal::BuiltinExtraArguments)0>, v8::internal::Isolate*) [/usr/local/bin/node]
14: v8::internal::Builtin_ObjectAssign(int, v8::internal::Object**, v8::internal::Isolate*) [/usr/local/bin/node]
15: 0x29d06c3092a7
16: 0x29d06c540595
17: 0x29d06c309895
18: 0x29d06c7164e7
[1] 8715 abort node index.js