Cargo Features

swc_ecma_transforms_base has no features set by default.

[dependencies]
swc_ecma_transforms_base = { version = "0.140.0", features = ["concurrent", "concurrent-renamer"] }
concurrent = concurrent-renamer, rayon

Enables concurrent of swc_ecma_utils

swc_ecma_utils:

Process in parallel.

concurrent-renamer concurrent? = rayon

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.

rayon concurrent? concurrent-renamer?