A modular library for measuring the Web Vitals metrics on real users.

This was vendored from: https://github.com/GoogleChrome/web-vitals: v3.5.2

The commit SHA used is: 3d2b3dc8576cc003618952fa39902fab764a53e2

Current vendored web vitals are:

• LCP (Largest Contentful Paint)
• FID (First Input Delay)
• CLS (Cumulative Layout Shift)
• INP (Interaction to Next Paint)
• TTFB (Time to First Byte)

This vendored web-vitals library is meant to be used in conjunction with the @sentry/browser browserTracingIntegration. As such, logic around BFCache and multiple reports were removed from the library as our web-vitals only report once per pageload.

Apache 2.0

#14439

• Bumped from Web Vitals v3.5.2 to v4.2.4

#11391

• Bumped from Web Vitals v3.0.4 to v3.5.2

#5987

• Bumped from Web Vitals v2.1.0 to v3.0.4

#3781

• Bumped from Web Vitals v0.2.4 to v2.1.0

#3515

• Remove support for Time to First Byte (TTFB)

#2964

• Added support for Cumulative Layout Shift (CLS) and Time to First Byte (TTFB)

#2909

• Added support for FID (First Input Delay) and LCP (Largest Contentful Paint)

#9690

• Added support for INP (Interaction to Next Paint)

TODO

• Add support for TTFB (Time to First Byte)