Build: make compare size cache readable for manual edits

Ref gh-5440

diff --git a/build/tasks/compare_size.mjs b/build/tasks/compare_size.mjs
index 554b1087a9fdc40a2cbacb11f871291f4d767264..a94cf42f01210f5d46d22547057346c9e8b5b46a 100644 (file)
--- a/build/tasks/compare_size.mjs
+++ b/build/tasks/compare_size.mjs
@@ -60,7 +60,9 @@ function cacheResults( results ) {
 }
 
 function saveCache( loc, cache ) {
-       return fs.writeFile( loc, JSON.stringify( cache ) );
+
+       // Keep cache readable for manual edits
+       return fs.writeFile( loc, JSON.stringify( cache, null, "  " ) + "\n" );
 }
 
 function compareSizes( existing, current, padLength ) {