telemetry: track usage of 'optimizeFonts' (#31522)

`optimizeFonts` is enabled by default, but the Aurora team would like to find out how many users explicitly turn it off.
vercel · Nov 17, 2021 · 9ab1709 · 9ab1709
1 parent b80c378
commit 9ab1709
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Showing 3 changed files with 22 additions and 8 deletions.
diff --git a/packages/next/build/index.ts b/packages/next/build/index.ts
@@ -1350,14 +1350,24 @@ export default async function build(
       )
     }
 
-    const optimizeCss: EventBuildFeatureUsage = {
-      featureName: 'experimental/optimizeCss',
-      invocationCount: config.experimental.optimizeCss ? 1 : 0,
-    }
-    telemetry.record({
-      eventName: EVENT_BUILD_FEATURE_USAGE,
-      payload: optimizeCss,
-    })
+    const features: EventBuildFeatureUsage[] = [
+      {
+        featureName: 'experimental/optimizeCss',
+        invocationCount: config.experimental.optimizeCss ? 1 : 0,
+      },
+      {
+        featureName: 'optimizeFonts',
+        invocationCount: config.optimizeFonts ? 1 : 0,
+      },
+    ]
+    telemetry.record(
+      features.map((feature) => {
+        return {
+          eventName: EVENT_BUILD_FEATURE_USAGE,
+          payload: feature,
+        }
+      })
+    )
 
     await promises.writeFile(
       path.join(distDir, SERVER_FILES_MANIFEST),

diff --git a/packages/next/telemetry/events/build.ts b/packages/next/telemetry/events/build.ts
@@ -131,6 +131,7 @@ export type EventBuildFeatureUsage = {
     | 'next/script'
     | 'next/dynamic'
     | 'experimental/optimizeCss'
+    | 'optimizeFonts'
     | 'swcLoader'
     | 'swcMinify'
   invocationCount: number

diff --git a/test/integration/telemetry/test/index.test.js b/test/integration/telemetry/test/index.test.js
@@ -575,6 +575,9 @@ describe('Telemetry CLI', () => {
     })
     const regex = /NEXT_BUILD_FEATURE_USAGE[\s\S]+?{([\s\S]+?)}/g
     regex.exec(stderr).pop() // optimizeCss
+    const optimizeFonts = regex.exec(stderr).pop()
+    expect(optimizeFonts).toContain(`"featureName": "optimizeFonts"`)
+    expect(optimizeFonts).toContain(`"invocationCount": 1`)
     const swcLoader = regex.exec(stderr).pop()
     expect(swcLoader).toContain(`"featureName": "swcLoader"`)
     expect(swcLoader).toContain(`"invocationCount": 1`)