diff --git a/packages/dependency-extraction-webpack-plugin/lib/index.js b/packages/dependency-extraction-webpack-plugin/lib/index.js
index 15307716ce44c9..0fdd78c9e1541e 100644
--- a/packages/dependency-extraction-webpack-plugin/lib/index.js
+++ b/packages/dependency-extraction-webpack-plugin/lib/index.js
@@ -388,6 +388,8 @@ class DependencyExtractionWebpackPlugin {
 			}
 
 			if ( compilation.options?.optimization?.runtimeChunk !== false ) {
+
+				// Sets the script handle for the shared runtime file so WordPress registers it only once when using the asset file.
 				assetData.handle =
 					compilation.name +
 					'-' +
diff --git a/packages/scripts/config/webpack.config.js b/packages/scripts/config/webpack.config.js
index 9dfb64e9245fba..bff448f2b6cdd0 100644
--- a/packages/scripts/config/webpack.config.js
+++ b/packages/scripts/config/webpack.config.js
@@ -342,6 +342,8 @@ const scriptConfig = {
 							} );
 
 							if ( hasReactFastRefresh ) {
+
+								// Prepends the file reference to the shared runtime chunk to every script type defined for the block.
 								const runtimePath = relative(
 									dirname( absoluteFrom ),
 									fromProjectRoot(