Use no_std if the reload feature is not enabled (#63)

Author: casey

.github/workflows/ci.yaml

@@ -41,6 +41,10 @@ jobs:
         cargo test --all --features axum
         cargo test --all --features reload
 
+    - run: |
+        rustup target add thumbv6m-none-eabi
+        cargo build --no-default-features --target thumbv6m-none-eabi
+
   lint:
     runs-on: ubuntu-latest
 

justfile

@@ -7,6 +7,7 @@ ci:
   cargo test --all
   cargo test --all --features axum
   cargo test --all --features reload
+  cargo build --no-default-features --target thumbv6m-none-eabi
 
 # publish current GitHub master branch
 publish:

src/escape.rs

@@ -68,6 +68,9 @@ mod tests {
     core::fmt::{self, Display},
   };
 
+  #[cfg(not(feature = "reload"))]
+  use alloc::string::ToString;
+
   struct Wrapper(&'static str);
 
   impl Display for Wrapper {

src/lib.rs

@@ -650,6 +650,11 @@
 //! ");
 //! ```
 
+#![cfg_attr(not(feature = "reload"), no_std)]
+
+#[cfg(not(feature = "reload"))]
+extern crate alloc;
+
 pub use {
   self::escape::{Escape, Trusted},
   boilerplate_macros::{boilerplate, Boilerplate},