Cargo Features

swc_icu_messageformat_parser has no features set by default.

[dependencies]
swc_icu_messageformat_parser = { version = "3.0.0", features = ["utf16"] }
utf16 = widestring

Affects ast::PluralOrSelectOptions

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.

widestring utf16?