lib: implement queueMicrotask

PR-URL: https://github.com/nodejs/node/pull/22951
Refs: https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-queuemicrotask
Reviewed-By: Bradley Farias <bradley.meck@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/node_util.cc b/src/node_util.cc
index 8f261e8989..c183f314a1 100644
--- a/src/node_util.cc
+++ b/src/node_util.cc
@@ -7,8 +7,10 @@ namespace util {
 using v8::ALL_PROPERTIES;
 using v8::Array;
 using v8::Context;
+using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::Integer;
+using v8::Isolate;
 using v8::Local;
 using v8::Object;
 using v8::ONLY_CONFIGURABLE;
@@ -172,6 +174,15 @@ void SafeGetenv(const FunctionCallbackInfo<Value>& args) {
             v8::NewStringType::kNormal).ToLocalChecked());
 }
 
+void EnqueueMicrotask(const FunctionCallbackInfo<Value>& args) {
+  Environment* env = Environment::GetCurrent(args);
+  Isolate* isolate = env->isolate();
+
+  CHECK(args[0]->IsFunction());
+
+  isolate->EnqueueMicrotask(args[0].As<Function>());
+}
+
 void Initialize(Local<Object> target,
                 Local<Value> unused,
                 Local<Context> context) {
@@ -219,6 +230,8 @@ void Initialize(Local<Object> target,
 
   env->SetMethod(target, "safeGetenv", SafeGetenv);
 
+  env->SetMethod(target, "enqueueMicrotask", EnqueueMicrotask);
+
   Local<Object> constants = Object::New(env->isolate());
   NODE_DEFINE_CONSTANT(constants, ALL_PROPERTIES);
   NODE_DEFINE_CONSTANT(constants, ONLY_WRITABLE);