fix!: add a cfg to make the crypto backend for jwt configurable (#834)

Author: CommanderStorm

.github/workflows/rust.yml

@@ -65,7 +65,7 @@ jobs:
       - run: |
           rustup default stable
           rustup target add wasm32-unknown-unknown
-          cargo build --target=wasm32-unknown-unknown --no-default-features
+          cargo build --target=wasm32-unknown-unknown --no-default-features -F jwt-rust-crypto
 
   clippy:
     runs-on: ubuntu-latest

Cargo.toml

@@ -40,7 +40,7 @@ futures = { version = "0.3.15" }
 futures-core = { version = "0.3", optional = true }
 futures-util = { version = "0.3", optional = true }
 getrandom = { version = "0.2.15", features = ["js"] }
-jsonwebtoken = { version = "10", features = ["rust_crypto"] }
+jsonwebtoken = { version = "10", default-features = false, features = ["use_pem"] }
 http = "1.0.0"
 http-body = "1.0.0"
 http-body-util = "0.1.0"
@@ -99,13 +99,16 @@ default = [
     "tracing",
     "default-client",
     "rustls-ring",
+    "jwt-rust-crypto",
 ]
 
 follow-redirect = ["tower-http/follow-redirect"]
 retry = ["tower/retry", "futures-util"]
 rustls = ["hyper-rustls"]
 rustls-ring = ["hyper-rustls/ring"]
 rustls-aws-lc-rs = ["hyper-rustls/aws-lc-rs"]
+jwt-aws-lc-rs = ["jsonwebtoken/aws_lc_rs"]
+jwt-rust-crypto = ["jsonwebtoken/rust_crypto"]
 rustls-webpki-tokio = ["hyper-rustls/webpki-tokio"]
 opentls = ["hyper-tls"]
 stream = ["futures-core", "futures-util"]

src/lib.rs

@@ -295,6 +295,14 @@ pub use self::{
     page::Page,
 };
 
+#[cfg(all(feature = "jwt-rust-crypto", feature = "jwt-aws-lc-rs"))]
+compile_error!(
+    "feature \"jwt-rust-crypto\" and feature \"jwt-aws-lc-rs\" cannot be enabled at the same time"
+);
+
+#[cfg(not(any(feature = "jwt-rust-crypto", feature = "jwt-aws-lc-rs")))]
+compile_error!("at least one of the features \"jwt-rust-crypto\" and feature \"jwt-aws-lc-rs\" must be enabled");
+
 /// A convenience type with a default error type of [`Error`].
 pub type Result<T, E = error::Error> = std::result::Result<T, E>;