From 6b95928efa51dd9b122df0d77ddfef95aeeea13f Mon Sep 17 00:00:00 2001
From: Connor Clark <cjamcl@google.com>
Date: Thu, 16 Sep 2021 17:28:56 -0500
Subject: [PATCH] misc(build): fix minifyFileTransform stream bug in Node 16
 (#13073)

---
 build/build-utils.js | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/build/build-utils.js b/build/build-utils.js
index 64d633d0f920..358172f063cf 100644
--- a/build/build-utils.js
+++ b/build/build-utils.js
@@ -31,10 +31,9 @@ function minifyFileTransform(file) {
       code += chunk.toString();
       next();
     },
-    async final(next) {
-      try {
-        const result = await terser.minify(code, {ecma: 2019});
-
+    // TODO: when min is Node 16, can just make this function async.
+    final(next) {
+      terser.minify(code, {ecma: 2019}).then(result => {
         if (result.code) {
           const saved = code.length - result.code.length;
           // eslint-disable-next-line no-console
@@ -43,11 +42,11 @@ function minifyFileTransform(file) {
         }
 
         next();
-      } catch (err) {
+      }).catch(err => {
         // eslint-disable-next-line no-console
         console.error(err);
         process.exit(1);
-      }
+      });
     },
   });
 }