From 034ae878c625e347ceca6fcc76363f40ce00637e Mon Sep 17 00:00:00 2001
From: Sam El-Husseini <sam.elhusseini@gmail.com>
Date: Mon, 16 Dec 2019 14:05:31 -0800
Subject: [PATCH] Fix gulp blocks compile build (#3519)

* Fix gulp build by adding Comment, Mutator and Warning to the remove regex.
---
 gulpfile.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gulpfile.js b/gulpfile.js
index 18abff83b..c74b334ce 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -197,6 +197,9 @@ gulp.task('build-core', function () {
  *     blocks_compressed.js
  */
 gulp.task('build-blocks', function () {
+  // Add provides used throughout blocks/ in order to be compatible with the
+  // compiler.  Anything added to this list must be removed from the compiled
+  // result using the remove regex steps below.
   const provides = `
 goog.provide('Blockly');
 goog.provide('Blockly.Blocks');
@@ -227,6 +230,8 @@ goog.provide('Blockly.Warning');`;
     .pipe(gulp.replace(/var Blockly=\{[^;]*\};\n?/, ''))
     // Remove Blockly Fields to be compatible with Blockly.
     .pipe(gulp.replace(/Blockly\.Field[^=\(]+=\{[^;]*\};/g, ''))
+    // Remove Blockly Warning, Comment & Mutator to be compatible with Blockly.
+    .pipe(gulp.replace(/Blockly\.(Comment|Warning|Mutator)=\{[^;]*\};/g, ''))
     .pipe(prependHeader())
     .pipe(gulp.dest('./'));
 });