obscura/obscura-dom-event-navigation-report.md

Obscura DOM Event + Navigation Side Effects Report

Status: Completed locally on branch fix/dom-event-navigation-side-effects.

Base/dependency note: branch was created from current fix/runtime-evaluate-await-promise state as requested, so this work depends on that branch until it is merged/rebased.

Changes

• crates/obscura-js/js/bootstrap.js
  • Preserves the original event.target during bubbling.
  • Allows bubbling even when preventDefault() was called, matching browser behavior.
  • Implements propagation stop flags for stopPropagation() and stopImmediatePropagation().
  • Makes preventDefault() honor cancelable.
• crates/obscura-js/src/ops.rs
  • op_navigate now updates runtime URL state immediately as well as recording pending navigation.
• crates/obscura-js/src/runtime.rs
  • Added acceptance tests for:
    1. button.click() runs click listener and updates dataset.
    2. dispatchEvent(new MouseEvent('click', { bubbles: true })) runs listener.
    3. location.href = '/next' updates URL/navigation state.
    4. Submit button click runs submit handler; handler preventDefault(); location.href='/submitted' updates URL/navigation state.

Verification

• cargo test -p obscura-js — passed, 58 tests.
• cargo test -p obscura-cdp — passed, 0 tests.

Existing warnings remain in obscura-net, obscura-js, and obscura-cdp; no new failure observed.

Remaining gaps

• I did not open a PR or push because remote permissions were not attempted/confirmed in this environment.
• cargo fmt was tested earlier but it reformats many unrelated existing files in this repo, so I reverted those broad formatting-only changes and kept the final diff scoped to this task.