chore(deps): bump wasm-bindgen from 0.2.118 to 0.2.120 in /playground/wasm

[dependabot]

Bumps wasm-bindgen from 0.2.118 to 0.2.120.

Release notes

Sourced from wasm-bindgen's releases.

0.2.120

Added

• Added support for the wasm64-unknown-unknown target (memory64 / wasm64). usize / isize and raw pointers are now lowered through an f64 JS number ABI on wasm64 (matching the existing convention used for Option<u32> etc. on wasm32), with the CLI inspecting the module's memory type to pick the right codegen path. Includes a dedicated wasm64 CI job and test suite covering the new ABI paths. #5004

• Promise ergonomics: Promise::all_tuple and Promise::all_settled_tuple for heterogeneous concurrent awaits (arity 1..=8, destructure via .into_tuple()), and a new wasm_bindgen::IntoJsGeneric trait underpinning typed-Array inference (with codegen-emitted identity impls and a #[wasm_bindgen(no_into_js_generic)] opt-out for types like JsClosure). Also re-exports JsGeneric from the prelude. Typed collection on js_sys::Array<T> is exposed as the inherent constructor Array::<T>::from_iter_typed (and companion extend_typed), inferring T from the iterator item via IntoJsGeneric. The stable FromIterator / Extend impls on Array (= Array<JsValue>) bound by AsRef<JsValue> are preserved, so existing .collect::<Array>() call sites keep compiling unchanged. Fixes #5042. #5121, #5125

• Added wasm_bindgen::instance() to return the current WebAssembly.Instance. The generated JS glue retains the instantiated WebAssembly.Instance. #5118

• Added a --cfg=wasm_bindgen_use_js_sys opt-in that makes async macro codegen use js_sys::futures instead of wasm_bindgen_futures, dropping the need for wasm-bindgen-futures when the crate already depends on js-sys. A cfg is used rather than a Cargo feature so the choice stays scoped to the crate that opts in. #5112 #5127

Changed

• Simplified generated web-sys bindings by omitting redundant #[wasm_bindgen] attributes when they match wasm-bindgen defaults, including structural method annotations and matching js_name entries. The #[wasm_bindgen] attribute parser now also accepts string-literal forms for extends, static_method_of, and vendor_prefix (alongside the existing bare-path/ident syntax), and the generator emits these arguments along with js_name as string literals so rustfmt can format the generated #[wasm_bindgen(...)] attributes uniformly. #5122

... (truncated)

Changelog

Sourced from wasm-bindgen's changelog.

wasm-bindgen Change Log

---

Unreleased

Notices

• Threading support now requires -Clink-arg=--export=__heap_base to be set in RUSTFLAGS for nightly toolchains from 2026-05-06 onward, after rust-lang/rust#156174 removed the implicit __heap_base/__data_end exports on wasm* targets. Atomics CI, CLI reference tests, and the nodejs-threads, raytrace-parallel, and wasm-audio-worklet examples have been updated to pass --export=__heap_base explicitly. The flag is backward-compatible with older nightlies.

• -Cpanic=unwind on wasm targets now emits modern (exnref) exception handling by default after rust-lang/rust#156061, and requires Node.js 22.22.3+ (for WebAssembly.JSTag). Building legacy EH wasm currently requires pinning to nightly-2026-05-06 or earlier, since user -Cllvm-args cannot override the new target spec. See #5151 for tracking Node.js 20 support.

Added

• New extends_js_class and extends_js_namespace attributes on exported structs to allow defining the parent js_class name when it has been customized by js_name and the parent's own js_namespace as well in turn. New validation is added at code generation time that will now catch these cases instead of emitting invalid code. Example:

  #[wasm_bindgen(js_name = "Animal", js_namespace = zoo)]
  pub struct AnimalImpl { /* ... */ }
  #[wasm_bindgen(
  extends = AnimalImpl,
  extends_js_class = "Animal",
  extends_js_namespace = zoo,
  )]
  pub struct DogImpl { /* ... */ }

  #5154

Changed

• When an exported struct uses js_namespace, the corresponding value must now be repeated on every impl block. Previously the impl-side

... (truncated)

Commits

• 3c5043f Release 0.2.120 (#5131)
• c68c40f release: 0.2.119 - schema bump (#5129)
• a9f3fb6 Release 0.2.119 (#5126)
• 17d783e Switch js-sys macro codegen opt-in from Cargo feature to cfg (#5127)
• 33b1244 Restore stable AsRef<JsValue>-based FromIterator/Extend for Array; expose typ...
• 208e874 Simplify web-sys generated bindings (#5122)
• 3455345 Add wasm64/memory64 support for wasm64-unknown-unknown target (#5004)
• 4c8fd1f Use js_sys::futures instead of wasm_bindgen_futures in codegen (#5112)
• e82e693 Use Publish Environment (#5124)
• 5727923 feat: Promise ergonomics for typed concurrent awaits (#5121)
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