v132 · offline / storage

navigator.storage no longer an EventTarget

navigator.storage is no longer an EventTarget navigator.storage was made an EventTarget for the Storage Pressure Event, which never made it past the prototype phase: https://chromestatus.com/feature/5666274359115776 This dead code is being removed and as a result, navigator.storage will no longer extend EventTarget.

concepts

  1. navigator.storage no EventTarget

    navigator.storage drops the EventTarget interface — it never fired any events anyway.

  2. quota polling

    The replacement pattern: poll estimate() on a schedule, real IDB writes, warn threshold.

  3. migration snippet scanner

    Paste code; the scanner flags broken patterns and shows the v132-safe replacement. Plus a 7-item checklist for your codebase audit.

  4. listener inventory

    Live probe of what's on navigator.storage now, plus a list of common JS libraries and their migration status.

why it shipped

navigator.storage is no longer an EventTarget navigator.storage was made an EventTarget for the Storage Pressure Event, which never made it past the prototype phase: https://chromestatus.com/feature/5666274359115776 This dead code is being removed and as a result, navigator.storage will no longer extend EventTarget.

references