ci: Add ci stage that checks wasm compilation. Add WASI badge to README.

Author: scottmarchant

.github/workflows/test.yaml

@@ -14,4 +14,4 @@ jobs:
   test:
     uses: graphqlswift/ci/.github/workflows/test.yaml@main
     with:
-      include_android: false
+      include_android: false

.github/workflows/wasm.yaml

@@ -0,0 +1,24 @@
+name: wasm
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+
+jobs:
+  # NOTE: swift tests won't compile due to usage
+  # of NIOPosix. But we can at least test that wasm compilation
+  # works, to prevent future breakages.
+  wasm:
+    name: Test wasm compilation
+    runs-on: ubuntu-latest
+    container: swift:6.1.0
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - uses: swiftwasm/setup-swiftwasm@v2
+        with:
+          target: "wasm32-unknown-wasip1-threads"
+      - run: swift build --swift-sdk wasm32-unknown-wasip1-threads

Package.resolved

@@ -13,7 +13,10 @@ let package = Package(
     dependencies: [
         .package(url: "https://github.com/apple/swift-algorithms.git", from: "1.0.0"),
         .package(url: "https://github.com/adam-fowler/async-collections", from: "0.0.1"),
-        .package(url: "https://github.com/apple/swift-nio.git", from: "2.0.0"),
+
+        // TODO: SM: Revert before merging. Temporarily using PL nio to test fix for NIOCore.
+        // .package(url: "https://github.com/apple/swift-nio.git", from: "2.0.0"),
+        .package(url: "https://github.com/PassiveLogic/swift-nio.git", branch: "main"),
     ],
     targets: [
         .target(

Package.swift

@@ -3,6 +3,7 @@
 [![](https://img.shields.io/badge/License-MIT-blue.svg?style=flat)](https://tldrlegal.com/license/mit-license)
 [![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2FGraphQLSwift%2FDataLoader%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/GraphQLSwift/DataLoader)
 [![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2FGraphQLSwift%2FDataLoader%2Fbadge%3Ftype%3Dplatforms)](https://swiftpackageindex.com/GraphQLSwift/DataLoader)
+[![WASI 0.1](https://github.com/GraphQLSwift/DataLoader/actions/workflows/wasm.yml/badge.svg?branch=main)](https://github.com/GraphQLSwift/DataLoader/actions/workflows/wasm.yml)
 
 DataLoader is a generic utility to be used as part of your application's data fetching layer to provide a simplified and consistent API over various remote data sources such as databases or web services via batching and caching.