Fix js build

client/ssh/server/command_execution_js.go

@@ -0,0 +1,36 @@
+//go:build js
+
+package server
+
+import (
+	"errors"
+	"os/exec"
+	"os/user"
+
+	"github.com/gliderlabs/ssh"
+)
+
+var errNotSupported = errors.New("SSH server command execution not supported on WASM/JS platform")
+
+// createSuCommand is not supported on JS/WASM
+func (s *Server) createSuCommand(_ ssh.Session, _ *user.User, _ bool) (*exec.Cmd, error) {
+	return nil, errNotSupported
+}
+
+// createExecutorCommand is not supported on JS/WASM
+func (s *Server) createExecutorCommand(_ ssh.Session, _ *user.User, _ bool) (*exec.Cmd, error) {
+	return nil, errNotSupported
+}
+
+// prepareCommandEnv is not supported on JS/WASM
+func (s *Server) prepareCommandEnv(_ *user.User, _ ssh.Session) []string {
+	return nil
+}
+
+// setupProcessGroup is not supported on JS/WASM
+func (s *Server) setupProcessGroup(_ *exec.Cmd) {
+}
+
+// killProcessGroup is not supported on JS/WASM
+func (s *Server) killProcessGroup(_ *exec.Cmd) {
+}