Browser agent release notesRSS

v1.268.0

Features

Aggregate UserActions

Utilize sequential aggregation techniques when observing UserAction data to reduce ingest cost for customers.

Add UserAction to GenericEvents

Select user interactive events will be captured in this release. This is an extension of the GenericEvents feature meant to drive UI experience.

Bug fixes

Always return a string for custom stringify method

An internal mechanism used to convert JS values to string was returning undefined for certain values, which may lead to errors for downstream callers when they are expecting a string. This is part 2 of a patch to ensure a string is returned.

Force generic events feature to clear buffer when unloading

Fixed an issue where the generic events buffer was not clearing when unloading. This affected a small portion of experiences where the agent was "unloading" due to the page losing focus, but not actually closing. Subsequent harvests when the page was re-focused would have the potential for duplicated data.

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, v1.268.0 of the browser agent was built for and tested against these browsers and version ranges: Chrome 118-128, Edge 117-127, Safari 16-17, and Firefox 119-129. For mobile devices, v1.268.0 was built and tested for Android OS 14 and iOS Safari 16-18.

v1.267.0

Features

Upgrade to web-vitals v4

Upgrade to web-vitals v4. For more info, please see https://github.com/GoogleChrome/web-vitals/blob/main/docs/upgrading-to-v4.md.

Improve notifications of stylesheet status for session replay

The agent reports internal metadata about the status of stylesheets on the page when collecting session replay information. This process was spotty and the logic has been improved to make the metadata more consistent. The ability to turn off "inlining" the stylesheets has been removed, as that behavior is required for the UI to re-render the replay.

Add soft navigations to Browser-Agent loader

Add the Soft Navigations limited preview feature to the default Browser Agent loader accessible via NPM.

Update TimeKeeper Source of Truth

Update the Agent's TimeKeeper to evaluate a timestamp provided directly by the consumer instead of a generic Date header, which should provide more control stability and granularity to the time synchronization processes.

Bug fixes

Improve reliability of customMasker

The customMasker method of the Session Replay feature has been fixed to be more reliable with DOM elements that do not fit web-standards, as to not throw errors when processing. Initial Replay harvests will now be gated until a valid snapshot is taken.

Stringify now returns an empty string if failed to transform

An internal mechanism used to convert objects to strings would return undefined if an exception was thrown during the process. This could lead downstream users of that method to throw errors if they expected the output to be a string. The utility method now always returns a string.

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, v1.267.0 of the Browser agent was built for and tested against these browsers and version ranges: Chrome 118-128, Edge 117-127, Safari 16-17, and Firefox 119-129. For mobile devices, v1.267.0 was built and tested for Android OS 14 and iOS Safari 16-18.

v1.266.0

Features

Removing long task

Previously, an agent configuration turned on reporting of long tasks that took over 50ms. This functionality is being shelved effective this agent version. The configuration will no longer do anything.

Bug fixes

Remove nullish coalescing inside getter

Removed a nullish coalescing assignment in a class getter -- which even though is claimed to be supported -- behaved badly in old versions of webkit browsers like Safari 15, some versions of Mobile Safari, and old chromium iOS browsers that use webkit.

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, v1.266.0 of the Browser agent was built for and tested against these browsers and version ranges: Chrome 118-128, Edge 117-127, Safari 16-17, and Firefox 119-129. For mobile devices, v1.266.0 was built and tested for Android OS 14 and iOS Safari 16-18.

v1.265.1

Bug fixes

Disable websocket wrapping

Fix websocket problems and breakage in application using other third party libraries dealing with sockets by removing the wrapping introduced in version 1.265.0.

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, v1.265.1 of the Browser agent was built for and tested against these browsers and version ranges: Chrome 117-127, Edge 117-127, Safari 16-17, and Firefox 118-128. For mobile devices, v1.265.1 was built and tested for Android OS 14 and iOS Safari 16-18.

v1.265.0

Features

Standardized feature buffering behavior

We've established one pattern for holding data before harvests and for retry logic that can be shared by the all of the features. This reduces bespoke logic per feature and establishes a pattern for use with future architecture changes.

Add WebSocket wrapper and supportability metrics

We added a wrapper to detect usage of WebSockets. This is intended to help evaluate viability of the agent tracking WebSocket data and its overall mechanism usage patterns.

Configure session replay to wait for DOMContentLoaded

We decreased the time spent waiting by triggering the session replay mutation observer wrapping on the DOMContentLoaded event instead of the previously used window load event. This ensures wrapping is completed before the load chain.

Removed internal barrel exports

We reduced the loader bundle size by reworking the internal source code imports and exports.

Added payload size evaluation to generic events feature

We've changed data harvesting, where now harvesting occurs early when the payload reaches 64kb and and will harvests from sending if it exceeds the 1MB ingest limit.

Bug fixes

Fix duplicative log payloads on unload

Ensure agent clears buffer on page navigation unload harvests to prevent duplicative payloads from being sent.

Ensure drain target is a valid event emitter before subscribing

Ensure that the drain target is a valid event emitter to ensure that the .on method exists and will not throw errors.

Telative timestamps in session trace

In rare cases where PerformanceNavigationTiming API is undefined, session trace timing nodes would be reported using epoch timestamp values instead of relative timestamp values. This would result in a broken session trace experience in New Relic. If the PerformanceNavigationTiming API is unavailable, the epoch timestamps will now be converted to relative timestamps accounting for user clock difference with New Relic servers.

Updated logging API function

Fix an issue where the logging API method would always result in an uninitialized agent warning and would not capture the log.

Security fixes

Apply obfuscation rules to session trace

A bug was introduced in version 1.259.0 where session trace data was not being processed through configured obfuscation rules. This fix ensures session trace data is properly obfuscated.

Potential areas where un-obfuscated data could be added to the session trace:

• When calling newrelic.addToTrace, the name of the trace event is a string provided by the customer.
• When capturing session trace nodes for ajax requests, the node will contain the current page URL excluding query parameters and hash fragments.
• When capturing resources being loaded on the page (javascript and css files), the session trace node will contain the URL of the resource excluding query parameters and hash fragments.
• When a user clicks a link on the page containing an href that includes a hash fragment and does not result in a hard page load, the href value of the link will be captured in a session trace node.
• When the browser agent captures an error on the page, the message of the error is included in a session trace node.

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, v1.265.0 of the Browser agent was built for and tested against these browsers and version ranges: Chrome 117-127, Edge 116-126, Safari 16-17, and Firefox 118-128. For mobile devices, v1.265.0 was built and tested for Android OS 14 and iOS Safari 16-18.

v1.264.0

Features

Create generic events feature with 1,000 event limit

Create a feature that will normalize, aggregate and harvest all generic events.

Report Page Actions with Generic Events Feature

Report all customer PageAction data utilizing the new Generic Events feature.

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, v1.264.0 of the Browser agent was built for and tested against these browsers and version ranges: Chrome 116-126, Edge 116-126, Safari 16-17, and Firefox 117-127. For mobile devices, v1.264.0 was built and tested for Android OS 9-14 and iOS Safari 16-17.5.

v1.263.0

Features

Optimize bundle size with warning codes

Decrease bundle size by converting static strings to warning codes with an accompanying link to a web resource.

Shut down agent if improperly configured

Shut down initialization of the agent if improperly configured. Agents must be provided a valid licenseKey and applicationID at runtime.

Bug Fixes

Prevent agent using invalid date header

Shut down the agent when unable to read a correctly formatted date header for the page view event harvest. This prevents harvesting data with wildly inaccurate timestamps. This should only happen with third-party or non-agent code has tampered with the ajax response headers.

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, v1.263.0 of the Browser agent was built for and tested against these browsers and version ranges: Chrome 116-126, Edge 116-126, Safari 16-17, and Firefox 117-127. For mobile devices, v1.263.0 was built and tested for Android OS 9-14 and iOS Safari 16-17.5.

v1.262.0

Features

logging bundle optimization

Improve the bundle size of the logging feature by moving non-critical pieces to the aggregation portion of the agent code.

Bug fixes

Release backlog memory when features are blocked by RUM

Plug a memory leak in Session Trace and other features. When entitlement or enable flag from RUM request returns a 0 for a feature, the agent will now release the reference to the events buffer under that feature so it can be garbage collected.

address call to stopTimer on undefined scheduler

Fixed an issue where session trace stopping on one tab while the same site was opening in another tab could result in the second tab throwing an exception when attempting to call stopTimer() on an undefined harvest scheduler.

safeguard api calls

Adding a safeguard to prevent an exception from being thrown when browser agent APIs are called before the agent is fully initialized.

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, v1.262.0 of the Browser agent was built for and tested against these browsers and version ranges: Chrome 116-126, Edge 116-126, Safari 16-17, and Firefox 117-127. For mobile devices, v1.262.0 was built and tested for Android OS 9-14 and iOS Safari 16-17.5.

v1.261.2

Bug fixes

recordReplay will restart replays on same session page loads

Patch a case of recordReplay not restarting session replay. Customers can now programatically continue the session replay after a hard page 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, v1.261.2 of the Browser agent was built for and tested against these browsers and version ranges: Chrome 116-126, Edge 116-126, Safari 16-17, and Firefox 117-127. For mobile devices, v1.261.2 was built and tested for Android OS 9-14 and iOS Safari 16-17.2.