Cargo Features

swc_html_ast has no features set by default.

swc_html_ast = { version = "0.36.0", features = ["rkyv-impl", "serde-impl"] }
rkyv-impl = rkyv

Enables rkyv-impl of swc_atoms and swc_common

serde-impl = serde

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

rkyv rkyv-impl?
serde serde-impl?