v12.5.0 (#16411)

Author: adamraine

changelog.md

@@ -1,3 +1,55 @@
+<a name="12.5.0"></a>
+# 12.5.0 (2025-03-25)
+[Full Changelog](https://github.com/GoogleChrome/lighthouse/compare/v12.4.0...v12.5.0)
+
+We expect this release to ship in the DevTools of [Chrome 136](https://chromiumdash.appspot.com/schedule), and to PageSpeed Insights within 2 weeks.
+
+## Notable Changes
+
+* `legacy-javascript` has been updated to target Baseline instead of esmodules for determining what code is considered "legacy" ([#16366](https://github.com/GoogleChrome/lighthouse/pull/16366)).
+
+## Core
+
+* enable enhanced traces, pass source maps to trace engine ([#16396](https://github.com/GoogleChrome/lighthouse/pull/16396))
+* pass lantern settings to trace engine and add logging ([#16377](https://github.com/GoogleChrome/lighthouse/pull/16377))
+* adapt trace engine i18n functions to LH i18n model ([#16365](https://github.com/GoogleChrome/lighthouse/pull/16365))
+* computed-artifacts: disallow undefined properties ([#16397](https://github.com/GoogleChrome/lighthouse/pull/16397))
+* duplicated-javascript: increase threshold from 1 to 10 KiB ([#16368](https://github.com/GoogleChrome/lighthouse/pull/16368))
+* image-delivery-insight: use strings without savings ([#16364](https://github.com/GoogleChrome/lighthouse/pull/16364))
+* insights: implement `use-cache-insight` ([#16401](https://github.com/GoogleChrome/lighthouse/pull/16401))
+* insights: upgrade and implement forced reflow ([#16395](https://github.com/GoogleChrome/lighthouse/pull/16395))
+* insights: move to hidden group by default ([#16391](https://github.com/GoogleChrome/lighthouse/pull/16391))
+* insights: implement font display insight ([#16369](https://github.com/GoogleChrome/lighthouse/pull/16369))
+* legacy-javascript: rework/revert some unminified bundle detection ([#16394](https://github.com/GoogleChrome/lighthouse/pull/16394))
+* legacy-javascript: support rollup bundles ([#16389](https://github.com/GoogleChrome/lighthouse/pull/16389))
+* legacy-javascript: support esbuild bundles ([#16385](https://github.com/GoogleChrome/lighthouse/pull/16385))
+* legacy-javascript: support unminified code ([#16384](https://github.com/GoogleChrome/lighthouse/pull/16384))
+* legacy-javascript: improve transform detection ([#16381](https://github.com/GoogleChrome/lighthouse/pull/16381))
+* script-treemap-data: keep duplicate info when collapsing nodes ([#16379](https://github.com/GoogleChrome/lighthouse/pull/16379))
+
+## Deps
+
+* upgrade deps ([#16408](https://github.com/GoogleChrome/lighthouse/pull/16408))
+* upgrade trace_engine to 0.0.47 ([#16376](https://github.com/GoogleChrome/lighthouse/pull/16376))
+* upgrade trace_engine, reuse cdt bf-cache/deprecation strings ([#16362](https://github.com/GoogleChrome/lighthouse/pull/16362))
+
+## I18n
+
+* import ([#16409](https://github.com/GoogleChrome/lighthouse/pull/16409))
+
+## Tests
+
+* fix local mocha tests not properly setting isUnderTest ([#16399](https://github.com/GoogleChrome/lighthouse/pull/16399))
+* fix i18n format in Node 20.19 ([#16398](https://github.com/GoogleChrome/lighthouse/pull/16398))
+* trace-engine: fix expectations ([#16380](https://github.com/GoogleChrome/lighthouse/pull/16380))
+
+## Misc
+
+* move support files to core/lib/legacy-javascript ([#16393](https://github.com/GoogleChrome/lighthouse/pull/16393))
+* extract legacy javascript detection to core/lib ([#16392](https://github.com/GoogleChrome/lighthouse/pull/16392))
+* build: use current year for bundle license copyright header ([#16375](https://github.com/GoogleChrome/lighthouse/pull/16375))
+* treemap: restructure header to match new design ([#16402](https://github.com/GoogleChrome/lighthouse/pull/16402))
+
 <a name="12.4.0"></a>
 # 12.4.0 (2025-02-26)
 [Full Changelog](https://github.com/GoogleChrome/lighthouse/compare/v12.3.0...v12.4.0)

core/test/fixtures/user-flows/reports/sample-flow-result.json

@@ -2,7 +2,7 @@
   "steps": [
     {
       "lhr": {
-        "lighthouseVersion": "12.4.0",
+        "lighthouseVersion": "12.5.0",
         "requestedUrl": "https://www.mikescerealshack.co/",
         "mainDocumentUrl": "https://www.mikescerealshack.co/",
         "finalDisplayedUrl": "https://www.mikescerealshack.co/",
@@ -9576,7 +9576,7 @@
     },
     {
       "lhr": {
-        "lighthouseVersion": "12.4.0",
+        "lighthouseVersion": "12.5.0",
         "finalDisplayedUrl": "https://www.mikescerealshack.co/search?q=call+of+duty",
         "fetchTime": "2025-02-05T01:31:50.141Z",
         "gatherMode": "timespan",
@@ -14601,7 +14601,7 @@
     },
     {
       "lhr": {
-        "lighthouseVersion": "12.4.0",
+        "lighthouseVersion": "12.5.0",
         "finalDisplayedUrl": "https://www.mikescerealshack.co/search?q=call+of+duty",
         "fetchTime": "2025-02-05T01:32:00.108Z",
         "gatherMode": "snapshot",
@@ -19995,7 +19995,7 @@
     },
     {
       "lhr": {
-        "lighthouseVersion": "12.4.0",
+        "lighthouseVersion": "12.5.0",
         "requestedUrl": "https://www.mikescerealshack.co/corrections",
         "mainDocumentUrl": "https://www.mikescerealshack.co/corrections",
         "finalDisplayedUrl": "https://www.mikescerealshack.co/corrections",

core/test/results/sample_v2.json

@@ -1,5 +1,5 @@
 {
-  "lighthouseVersion": "12.4.0",
+  "lighthouseVersion": "12.5.0",
   "requestedUrl": "http://localhost:10200/dobetterweb/dbw_tester.html",
   "mainDocumentUrl": "http://localhost:10200/dobetterweb/dbw_tester.html",
   "finalDisplayedUrl": "http://localhost:10200/dobetterweb/dbw_tester.html",

docs/plugins.md

@@ -61,10 +61,10 @@ A Lighthouse plugin is just a node module with a name that starts with `lighthou
   "type": "module",
   "main": "plugin.js",
   "peerDependencies": {
-    "lighthouse": "^12.4.0"
+    "lighthouse": "^12.5.0"
   },
   "devDependencies": {
-    "lighthouse": "^12.4.0"
+    "lighthouse": "^12.5.0"
   }
 }
 ```

docs/recipes/lighthouse-plugin-example/package.json

@@ -4,7 +4,7 @@
   "type": "module",
   "main": "./plugin.js",
   "peerDependencies": {
-    "lighthouse": "^12.4.0"
+    "lighthouse": "^12.5.0"
   },
   "devDependencies": {
     "lighthouse": "^8.6.0"

package.json

@@ -1,7 +1,7 @@
 {
   "name": "lighthouse",
   "type": "module",
-  "version": "12.4.0",
+  "version": "12.5.0",
   "description": "Automated auditing, performance metrics, and best practices for the web.",
   "main": "./core/index.js",
   "bin": {

third-party/devtools-tests/e2e/lighthouse/navigation_test.ts

@@ -94,7 +94,7 @@ describe('Navigation', function() {
     // 1 refresh after auditing to reset state
     assert.strictEqual(numNavigations, 5);
 
-    assert.strictEqual(lhr.lighthouseVersion, '12.4.0');
+    assert.strictEqual(lhr.lighthouseVersion, '12.5.0');
     assert.match(lhr.finalUrl, /^https:\/\/localhost:[0-9]+\/test\/e2e\/resources\/lighthouse\/hello.html/);
 
     assert.strictEqual(lhr.configSettings.throttlingMethod, 'simulate');