Carry realm-owned exception tokens through the module tree, preserve V8 compile exceptions, and cache static dependency validation failures without caching direct import resolution or network errors. Keep values GC-traced and isolated across WindowProxy reuse.
Add identity, shared-dependency, realm, GC, and pending-sibling regressions. Validated with fmt, full workspace Clippy, 17647 nextest passes, and a matched 148-case CLI/CDP WPT slice. The target now passes 11/11 subtests; smoke is 42/43 with the baseline missing-node Puppeteer failure.
JSON/CSS compilation retained independent copies in the module map and the
synthetic module record. Share immutable text with Arc<str> across fetched
sources, the portable module tree, and synthetic evaluation records instead
of copying String buffers during cloning and registration.
Release the module-map source after successful JavaScript/JSON/CSS compilation.
Make fetched-source retention an exhaustive ModuleKind policy, preserving Wasm
and text-preload source semantics. Context lookups remain weak record references.
Cover the actual module-tree compile path: the record keeps exactly one strong
reference to the original text allocation after fetch temporaries are dropped,
and destroys it when disposed. Verify record clones share the same source and
Wasm entries retain their binary source.
Validation:
- cargo fmt --all
- cargo clippy --workspace --all-targets --all-features -- -D warnings
- cargo nextest run --no-fail-fast: 19,013 passed, 16 skipped
ldm0