Profile memory usage

A memory leak was reported on the long-lived single-page app; run the browser memory profiler while exercising the user journey from login to 30 minutes of use, take heap snapshots at 0, 5, 15, and 30 minutes, and produce a minimal report showing any growing retained object types and their retaining paths.

Before I send the memory report to the engineering lead, make it easy to act on: summarize the top three retained object types with their allocation counts, show the code locations that retain them (file and line if possible), and note whether the leak grows linearly or in spikes. Suggest one practical stopgap change to reduce retained memory immediately.

While exercising the app for 20 minutes, the heap steadily grows and never recovers; snapshots show increasing Detached DOM nodes but I don't know whether they come from event listeners, virtual DOM mismatches, or forgotten timers. What targeted check should I run next to distinguish between those causes and what exact profiler view will prove it?

Across several projects I keep chasing memory growth that surfaces only after long sessions, costing time to reproduce and fix. Where am I most likely introducing lingering references during feature development and which consistent coding habit should I adopt to prevent these leaks going forward?