feat: handle TTFB from web-vitals without transform (#221)

Zizzamia · Feb 21, 2023 · f846326 · f846326
1 parent 6ad2d60
commit f846326
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Showing 2 changed files with 6 additions and 9 deletions.
diff --git a/package-lock.json b/package-lock.json
diff --git a/src/observe.ts b/src/observe.ts
@@ -14,14 +14,11 @@ import { po } from './performanceObserver';
 import { initResourceTiming } from './resourceTiming';
 
 export const initPerformanceObserver = (): void => {
-  // @ts-ignore
   onTTFB(report => {
-    // Calculate the request time by subtracting from TTFB
-    // everything that happened prior to the request starting.
-    // @ts-ignore
-    report.value = report.value - report.entries[0].requestStart;
-    // @ts-ignore
-    logMetric(report);
+    if (report.value > 0) {
+      // @ts-ignore
+      logMetric(report);
+    }
   }, config.reportOptions.ttfb);
   // @ts-ignore
   onCLS(report => logMetric(report), config.reportOptions.cls);