Boomerang may override (wrap) native DOM functions for monitoring purposes, depending on the plugins and features that are enabled.
Generally, Boomerang wraps these functions to add a small amount of custom instrumentation, prior to executing the original function.
The following is a list of known DOM overrides:
| Method | Plugin | Option | Purpose |
|---|---|---|---|
XMLHttpRequest constructor |
BOOMR.plugins.AutoXHR |
instrument_xhr |
Monitor timing for XHRs (individual and during SPA navigations) |
fetch |
BOOMR.plugins.AutoXHR |
AutoXHR.monitorFetch |
Monitor timing for fetches (individual and during SPA navigations) |
window.onerror |
BOOMR.plugins.Errors |
Errors.monitorGlobal |
Monitor global exceptions |
console.error |
BOOMR.plugins.Errors |
Errors.monitorConsole |
Monitor app-generated error messages |
addEventListener |
BOOMR.plugins.Errors |
Errors.monitorEvents |
Wrapped so messages from cross-origin frames have a full stack |
removeEventListener |
BOOMR.plugins.Errors |
Errors.monitorEvents |
Wrapped so messages from cross-origin frames have a full stack |
setTimeout |
BOOMR.plugins.Errors |
Errors.monitorTimeout |
Wrapped so messages from cross-origin frames have a full stack |
setInterval |
BOOMR.plugins.Errors |
Errors.monitorTimeout |
Wrapped so messages from cross-origin frames have a full stack |
history.back |
BOOMR.plugins.History |
When BOOMR.plugins.History is enabled |
SPA Soft Navigation monitoring |
history.forward |
BOOMR.plugins.History |
When BOOMR.plugins.History is enabled |
SPA Soft Navigation monitoring |
history.pushState |
BOOMR.plugins.History |
When BOOMR.plugins.History is enabled |
SPA Soft Navigation monitoring |
history.replaceState |
BOOMR.plugins.History |
When BOOMR.plugins.History is enabled |
SPA Soft Navigation monitoring |
history.go |
BOOMR.plugins.History |
When BOOMR.plugins.History is enabled |
SPA Soft Navigation monitoring |