From 27f606db1be12f68381fe4d536bcf570dde62f7f Mon Sep 17 00:00:00 2001
From: Zaven Muradyan <voithos@google.com>
Date: Sun, 14 Oct 2018 20:55:04 -0700
Subject: [PATCH] Add comments to javascript wrapper parts.

The code in pre.js and engine.js is a bit confusing to see in isolation,
since the files aren't valid JS files by themselves. This just adds some
explanatory text to both files.

Fixes #22937.

(cherry picked from commit 61d5513525fa3c484cb2d277f39b971edbb605ef)
---
 platform/javascript/engine.js | 3 +++
 platform/javascript/pre.js    | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/platform/javascript/engine.js b/platform/javascript/engine.js
index 329a4fc1894..3f01f5869b9 100644
--- a/platform/javascript/engine.js
+++ b/platform/javascript/engine.js
@@ -1,3 +1,6 @@
+		// The following is concatenated with generated code, and acts as the end
+		// of a wrapper for said code. See pre.js for the other part of the
+		// wrapper.
 		exposedLibs['PATH'] = PATH;
 		exposedLibs['FS'] = FS;
 		return Module;
diff --git a/platform/javascript/pre.js b/platform/javascript/pre.js
index 02194bc75ea..a870e676ea8 100644
--- a/platform/javascript/pre.js
+++ b/platform/javascript/pre.js
@@ -1,2 +1,5 @@
 var Engine = {
 	RuntimeEnvironment: function(Module, exposedLibs) {
+		// The above is concatenated with generated code, and acts as the start of
+		// a wrapper for said code. See engine.js for the other part of the
+		// wrapper.