Cargo Features

[dependencies]
katex-gdef-v8 = { version = "0.1.6", default-features = false, features = ["v8", "qjs"] }
default = v8

The v8 feature is set by default whenever katex-gdef-v8 is added without default-features = false somewhere in the dependency tree.

v8 default = deno_core
qjs = quickjs-rusty

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.

deno_core v8

Enables deno_core ^0.341.0

quickjs-rusty qjs?