From b7eabe1e290f7b8e5da2b8c4c7be783dc250b2a0 Mon Sep 17 00:00:00 2001
From: Charles Lyding <19598772+clydin@users.noreply.github.com>
Date: Mon, 16 Dec 2019 20:14:54 -0500
Subject: [PATCH] fix(@angular-devkit/build-angular): properly process es2016+
 targets with differential loading cache

---
 .../angular_devkit/build_angular/src/browser/action-cache.ts  | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/angular_devkit/build_angular/src/browser/action-cache.ts b/packages/angular_devkit/build_angular/src/browser/action-cache.ts
index f04e4053b07b..492838c9d7ab 100644
--- a/packages/angular_devkit/build_angular/src/browser/action-cache.ts
+++ b/packages/angular_devkit/build_angular/src/browser/action-cache.ts
@@ -168,7 +168,7 @@ export class BundleActionCache {
     cacheEntry = entries[CacheKey.DownlevelCode];
     if (cacheEntry) {
       result.downlevel = {
-        filename: action.filename.replace('es2015', 'es5'),
+        filename: action.filename.replace(/\-es20\d{2}/, '-es5'),
         size: cacheEntry.size,
         integrity: cacheEntry.integrity,
       };
@@ -178,7 +178,7 @@ export class BundleActionCache {
       cacheEntry = entries[CacheKey.DownlevelMap];
       if (cacheEntry) {
         result.downlevel.map = {
-          filename: action.filename.replace('es2015', 'es5') + '.map',
+          filename: action.filename.replace(/\-es20\d{2}/, '-es5') + '.map',
           size: cacheEntry.size,
         };