Enable getrandom/js feature and test wasm32-unknown-unknown in CI

.github/workflows/tests.yml

@@ -36,3 +36,25 @@ jobs:
         with:
           command: build
           args: --no-default-features
+
+  # https://rustwasm.github.io/docs/book/reference/add-wasm-support-to-crate.html#maintaining-ongoing-support-for-webassembly
+  web_assembly:
+    name: WebAssembly - Release build
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        arch:
+          - wasm32-unknown-unknown
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          persist-credentials: false
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          target: ${{ matrix.arch }}
+          override: true
+      - uses: actions-rs/cargo@v1
+        with:
+          command: check
+          args: --no-default-features --target ${{ matrix.arch }}

Cargo.toml

@@ -29,6 +29,7 @@ default-features = false
 
 [dependencies.getrandom]
 version = "0.2"
+features = [ "js" ]
 
 [dependencies.ct-codecs]
 version = "1.1.1"

README.md

@@ -10,6 +10,7 @@ This library includes:
 - [x] Pure-Rust implementation of the Version 4 and 2 protocol
 - [x] PASERK support (limited amount of PASERK-types)
 - [x] `#![no_std]` (with default-features disabled) and `#![forbid(unsafe_code)]`
+- [x] WASM-friendly (`wasm32-unknown-unknown` using `#![no_std]`)
 - [x] Fuzzing targets
 - [x] Test vectors
 - [x] Usage examples