From 445f7896c136934af90c0b90e1bb208992df5da3 Mon Sep 17 00:00:00 2001
From: George Kalpakas <kalpakas.g@gmail.com>
Date: Fri, 23 Nov 2018 21:08:23 +0200
Subject: [PATCH] build: error when files specified in payload size limits are
 missing (#27250)

PR Close #27250
---
 aio/scripts/_payload-limits.json | 3 +--
 scripts/ci/payload-size.js       | 9 ++++++++-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/aio/scripts/_payload-limits.json b/aio/scripts/_payload-limits.json
index b538c760b6..8ea659c881 100755
--- a/aio/scripts/_payload-limits.json
+++ b/aio/scripts/_payload-limits.json
@@ -4,8 +4,7 @@
       "uncompressed": {
         "runtime": 3881,
         "main": 499953,
-        "polyfills": 53926,
-        "prettify": 14917
+        "polyfills": 53926
       }
     }
   }
diff --git a/scripts/ci/payload-size.js b/scripts/ci/payload-size.js
index bf1699ab55..36193d0707 100644
--- a/scripts/ci/payload-size.js
+++ b/scripts/ci/payload-size.js
@@ -21,7 +21,14 @@ for (const compressionType in limitSizes) {
       const expectedSize = limitPerFile[filename];
       const actualSize = currentSizes[`${compressionType}/${filename}`];
 
-      if (Math.abs(actualSize - expectedSize) > expectedSize / 100) {
+      if (actualSize === undefined) {
+        failed = true;
+        // An expected compression type/file combination is missing. Maybe the file was renamed or
+        // removed. Report it as an error, so the user updates the corresponding limit file.
+        console.log(
+            `Commit ${commit} ${compressionType} ${filename} meassurement is missing. ` +
+            'Maybe the file was renamed or removed.');
+      } else if (Math.abs(actualSize - expectedSize) > expectedSize / 100) {
         failed = true;
         // We must also catch when the size is significantly lower than the payload limit, so
         // we are forced to update the expected payload number when the payload size reduces.