diff --git a/src/env-inl.h b/src/env-inl.h
index ce4adca6c8ba74..7481a8771848d8 100644
--- a/src/env-inl.h
+++ b/src/env-inl.h
@@ -232,39 +232,39 @@ inline void Environment::PopAsyncCallbackScope() {
   async_callback_scope_depth_--;
 }
 
-inline Environment::ImmediateInfo::ImmediateInfo(v8::Isolate* isolate)
+inline ImmediateInfo::ImmediateInfo(v8::Isolate* isolate)
     : fields_(isolate, kFieldsCount) {}
 
 inline AliasedBuffer<uint32_t, v8::Uint32Array>&
-    Environment::ImmediateInfo::fields() {
+    ImmediateInfo::fields() {
   return fields_;
 }
 
-inline uint32_t Environment::ImmediateInfo::count() const {
+inline uint32_t ImmediateInfo::count() const {
   return fields_[kCount];
 }
 
-inline uint32_t Environment::ImmediateInfo::ref_count() const {
+inline uint32_t ImmediateInfo::ref_count() const {
   return fields_[kRefCount];
 }
 
-inline bool Environment::ImmediateInfo::has_outstanding() const {
+inline bool ImmediateInfo::has_outstanding() const {
   return fields_[kHasOutstanding] == 1;
 }
 
-inline void Environment::ImmediateInfo::count_inc(uint32_t increment) {
+inline void ImmediateInfo::count_inc(uint32_t increment) {
   fields_[kCount] += increment;
 }
 
-inline void Environment::ImmediateInfo::count_dec(uint32_t decrement) {
+inline void ImmediateInfo::count_dec(uint32_t decrement) {
   fields_[kCount] -= decrement;
 }
 
-inline void Environment::ImmediateInfo::ref_count_inc(uint32_t increment) {
+inline void ImmediateInfo::ref_count_inc(uint32_t increment) {
   fields_[kRefCount] += increment;
 }
 
-inline void Environment::ImmediateInfo::ref_count_dec(uint32_t decrement) {
+inline void ImmediateInfo::ref_count_dec(uint32_t decrement) {
   fields_[kRefCount] -= decrement;
 }
 
@@ -435,7 +435,7 @@ inline AsyncHooks* Environment::async_hooks() {
   return &async_hooks_;
 }
 
-inline Environment::ImmediateInfo* Environment::immediate_info() {
+inline ImmediateInfo* Environment::immediate_info() {
   return &immediate_info_;
 }
 
diff --git a/src/env.h b/src/env.h
index 393d24ea9d00bb..27603db19e7b5f 100644
--- a/src/env.h
+++ b/src/env.h
@@ -624,6 +624,29 @@ class AsyncCallbackScope {
   Environment* env_;
 };
 
+class ImmediateInfo {
+ public:
+  inline AliasedBuffer<uint32_t, v8::Uint32Array>& fields();
+  inline uint32_t count() const;
+  inline uint32_t ref_count() const;
+  inline bool has_outstanding() const;
+  inline void count_inc(uint32_t increment);
+  inline void count_dec(uint32_t decrement);
+  inline void ref_count_inc(uint32_t increment);
+  inline void ref_count_dec(uint32_t decrement);
+
+  ImmediateInfo(const ImmediateInfo&) = delete;
+  ImmediateInfo& operator=(const ImmediateInfo&) = delete;
+
+ private:
+  friend class Environment;  // So we can call the constructor.
+  inline explicit ImmediateInfo(v8::Isolate* isolate);
+
+  enum Fields { kCount, kRefCount, kHasOutstanding, kFieldsCount };
+
+  AliasedBuffer<uint32_t, v8::Uint32Array> fields_;
+};
+
 class Environment {
  public:
   Environment(const Environment&) = delete;
@@ -633,36 +656,6 @@ class Environment {
   inline void PushAsyncCallbackScope();
   inline void PopAsyncCallbackScope();
 
-  class ImmediateInfo {
-   public:
-    inline AliasedBuffer<uint32_t, v8::Uint32Array>& fields();
-    inline uint32_t count() const;
-    inline uint32_t ref_count() const;
-    inline bool has_outstanding() const;
-
-    inline void count_inc(uint32_t increment);
-    inline void count_dec(uint32_t decrement);
-
-    inline void ref_count_inc(uint32_t increment);
-    inline void ref_count_dec(uint32_t decrement);
-
-    ImmediateInfo(const ImmediateInfo&) = delete;
-    ImmediateInfo& operator=(const ImmediateInfo&) = delete;
-
-   private:
-    friend class Environment;  // So we can call the constructor.
-    inline explicit ImmediateInfo(v8::Isolate* isolate);
-
-    enum Fields {
-      kCount,
-      kRefCount,
-      kHasOutstanding,
-      kFieldsCount
-    };
-
-    AliasedBuffer<uint32_t, v8::Uint32Array> fields_;
-  };
-
   class TickInfo {
    public:
     inline AliasedBuffer<uint8_t, v8::Uint8Array>& fields();