Skip to content
This repository was archived by the owner on Apr 18, 2026. It is now read-only.
This repository was archived by the owner on Apr 18, 2026. It is now read-only.

Avoid serving legacy JavaScript to modern browsers #3019

Description

@seannherdy

Google PageSpeed Insights is emitting the following warning:

Avoid serving legacy JavaScript to modern browsers

Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support legacy browsers. Learn why most sites can deploy ES6+ code without transpilingLCPFCP
URL
Est Savings
Google CDN cdn
0.0 KiB
…js/jsapi_compiled_ui_module.js(www.gstatic.com)
0.0 KiB
…js/jsapi_compiled_ui_module.js:85:419(www.gstatic.com)
@babel/plugin-transform-regenerator

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions