Module protocol 

The wire protocol shared between the JS reconciler and the Bevy side.

Everything here derives serde so deno_core’s serde_v8 can convert directly between the plain JS objects the reconciler builds and these Rust types — no JSON strings on the hot path. Ops only ever flow JS -> Rust, so they need Deserialize only; UiEvent flows Rust -> JS and is Serialize.

Wire strings are decoded once, here at the serde boundary — never re-parsed on apply. The unit-bearing types (Length/Angle/Time/ FontSize) parse into their own wire types, and the enum-like style fields (display/align*/flex*/grid tracks/…) decode directly into the bevy_ui/bevy_text values they drive, via field-level deserialize_with (which sidesteps the orphan rule), so applying a style in [crate::ui_map] is a plain field copy. A malformed string must not fail the whole batch (one typo would abort the entire commit and trigger a reload), so every deserializer falls back to the bevy default and emits a tracing::warn! naming the bad value (tracing reaches the same log sink bevy_log drains). In dev builds with devtools those fallbacks are also collected as structured crate::diag entries (decode_warn + op::OpBatch’s per-op attribution) so the inspector can flag the offending style/prop rows.

Modules

animatable

Animatable<T> — the { animated } wrapper every animatable style/attr field decodes through — and the AnimatableField read helpers.

background_image

The backgroundImage style wire types and their totalizing decoder.

grid

CSS grid track/template/placement string parsing, decoding straight into bevy_ui grid types via the grid_fields! deserializers.

keywords

Keyword-valued style fields: the keyword_fields! table decodes each wire keyword straight into the bevy_ui/bevy_text enum it drives.

op

JS→Bevy mutation ops: the Op batch the reconciler flushes per commit, plus OpBatch’s decode-warning attribution wrapper.

outbound

Everything Bevy sends to JS: UiEvent and the Outbound envelope.

props

Props — the content/attribute level of a host element — and its dirty/event bookkeeping (PropsDirty, UpdateEvents).

style

The Style object, its dirty-group partition (style_groups, StyleDirty), and the with_style_fields! table every style field is registered in.

transform

The static transform / transform3d wire types mirroring the animated transform channels.

units

The unit-bearing wire types: Length, Angle, Time, FontSize, Rect — parsed once at the serde boundary.

visual

Visual spec wire types: outline, shadows, line metrics, gradients, and per-side border colors.

Constants

ROOT_ID

Type Aliases

NodeId

Stable identity for a node, assigned by the JS reconciler. 0 is reserved for the root container (the Bevy UI root entity).