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Browser agent v1.236.0

June 27, 2023



Expose MicroLoader in the npm package

The npm package now exposes an entry-point called MicroLoader, which may be used to instantiate multiple agents on one page. This loader type, which is smaller than the Lite loader, captures a distinct PageView event per instance but does not auto-instrument the page. Instead, manual API calls may be used to capture JavaScriptError and PageAction events via the noticeError and addPageAction methods.

Remove img, jsonp, and xhrGet methods

Unused agent network methods have been removed. All data transmitted by the agent will now default to using XMLHttpRequest POST calls except for data transmitted during a visibility change or page unload. Visibility changes and page unloads will use sendBeacon with a fallback to fetch with keepalive. For browsers that do not support sendBeacon, the final data transmission will use XMLHttpRequest POST.

Bug Fixes

Handle chunk load promise error introduced in 1.235.0

Starting in 1.235.0, loading the agent in browsers with strict privacy settings resulted in an uncaught error in a promise. This error has been handled, and chunk load failures again result only in a warning.

Fix illegal invocation error on final harvest

An issue from 1.234.0 has been addressed in which an illegal invocation error could occur during a final harvest as a result of calling addPageAction and passing window.location as an argument before a navigation.

Support statement:

New Relic recommends that you upgrade the agent regularly to ensure that you're getting the latest features and performance benefits. Older releases will no longer be supported when they reach end-of-life. Release dates are reflective of the original publish date of the agent version.

New Browser Agent releases are rolled out to customers in small stages over a period of time. Because of this, the date the release becomes accessible to your account may not match the original publish date. Please see this status dashboard for more information.

Consistent with our browser support policy, v1.236.0 of the Browser agent was built for and tested against these browsers and version ranges: Chrome 105-114, Edge 105-113, Safari 15-16, and Firefox 105-113. For mobile devices, v1.236.0 was built and tested for Android Chrome 100 and iOS Safari 15.2-15.5.

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