Cargo Features

[dependencies]
nano-id = { version = "0.4.0", default-features = false, features = ["wasm", "base62", "base64"] }
default = base64

The base64 feature is set by default whenever nano-id is added without default-features = false somewhere in the dependency tree.

wasm

Enables js of getrandom

getrandom:

Feature to enable JavaScript bindings on wasm*-unknown-unknown

base58 base62
base64 default

Nanoid has 4 features without comments.