src: export v8.GetHeapCodeAndMetadataStatistics()

Export statistic provided by V8 through HeapCodeStatistics class and
and GetHeapCodeAndMetadataStatistics function to v8 Node.js module

PR-URL: https://github.com/nodejs/node/pull/27978
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/test/parallel/test-v8-stats.js b/test/parallel/test-v8-stats.js
index 3e2eadef17..d79ab84956 100644
--- a/test/parallel/test-v8-stats.js
+++ b/test/parallel/test-v8-stats.js
@@ -22,6 +22,18 @@ keys.forEach(function(key) {
 });
 
 
+const heapCodeStatistics = v8.getHeapCodeStatistics();
+const heapCodeStatisticsKeys = [
+  'bytecode_and_metadata_size',
+  'code_and_metadata_size',
+  'external_script_source_size'];
+assert.deepStrictEqual(Object.keys(heapCodeStatistics).sort(),
+                       heapCodeStatisticsKeys);
+heapCodeStatisticsKeys.forEach(function(key) {
+  assert.strictEqual(typeof heapCodeStatistics[key], 'number');
+});
+
+
 const expectedHeapSpaces = [
   'code_large_object_space',
   'code_space',