Yield live HTML script preparation to the document owner after releasing
parser borrows. Prepare from the current DOM after the guarded microtask
checkpoint, and abandon stale handoffs when that checkpoint replaces the
document. Apply the boundary to main documents, child documents, and
document.write; preserve eager parsing when no runtime owner is installed.
Admit parser async classic scripts after preparation and keep nested
script cleanup from draining microtasks while an outer script is running.
Add main/child integration coverage and update the two repaired WPT cases.
Validation:
- cargo fmt --all
- cargo clippy --workspace --all-targets --all-features -- -D warnings
- cargo nextest run --no-fail-fast: 17,846 passed, 13 skipped
- 245 related WPT cases: all 231 previously passing cases remain passing
- Final CLI build: both repaired WPT cases pass on the validated sources
Distinguish empty or invalid external script URLs from internal parser preparation failures. Queue trusted element errors on the shared DOM-manipulation source for root, document.write, and child parser paths without reporting spurious Window exceptions.
Retain exact Document ownership, listener checkpoints, and already-started state. Cover stale tasks and reused PageVm-local ids, and record the two WPT cases verified in CLI and CDP modes.
ldm0