Update CI to GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,42 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+  workflow_dispatch:
+
+env:
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    name: Go 1.25 on ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: "1.25.x"
+
+      - name: Lint
+        if: matrix.os == 'ubuntu-latest'
+        run: |
+          if [ -n "$(gofmt -l .)" ]; then
+            echo "Go code is not formatted. Run 'gofmt -w .'"
+            exit 1
+          fi
+          go vet ./...
+
+      - name: Install
+        run: go install ./cmd/devd
+
+      - name: Test
+        run: |
+          go test -v -race ./...
+          go run ./cmd/devd --help

fileserver/fileserver.go

@@ -229,7 +229,7 @@ func localRedirect(w http.ResponseWriter, r *http.Request, newPath string) {
 // To use the operating system's file system implementation,
 // use http.Dir:
 //
-//     http.Handle("/", &fileserver.FileServer{Root: http.Dir("/tmp")})
+//	http.Handle("/", &fileserver.FileServer{Root: http.Dir("/tmp")})
 type FileServer struct {
 	Version        string
 	Root           http.FileSystem

fileserver/z_last_test.go

@@ -46,12 +46,12 @@ func afterTest(t *testing.T) {
 	}
 	var bad string
 	badSubstring := map[string]string{
-		").readLoop(":                                  "a Transport",
-		").writeLoop(":                                 "a Transport",
+		").readLoop(":  "a Transport",
+		").writeLoop(": "a Transport",
 		"created by net/http/httptest.(*Server).Start": "an httptest.Server",
-		"timeoutHandler":                               "a TimeoutHandler",
-		"net.(*netFD).connect(":                        "a timing out dial",
-		").noteClientGone(":                            "a closenotifier sender",
+		"timeoutHandler":        "a TimeoutHandler",
+		"net.(*netFD).connect(": "a timing out dial",
+		").noteClientGone(":     "a closenotifier sender",
 	}
 	var stacks string
 	for i := 0; i < 4; i++ {