create new server-build, for server side use cases (#1055)

config/rollup.worker-thread.js

@@ -31,6 +31,28 @@ const compilePlugins = [
 // So, here we continue to use the '.mjs' extension to indicate newer ECMASCRIPT support
 // but ensure the code can be run within a worker by putting it inside a named iife.
 const ESModules = [
+  {
+    input: 'output/worker-thread/server-lib.js',
+    output: {
+      file: 'dist/server-lib.mjs',
+      format: 'es',
+      name: 'ServerLib',
+      sourcemap: true,
+    },
+    plugins: [
+      replace({
+        values: {
+          WORKER_DOM_DEBUG: false,
+        },
+        preventAssignment: true,
+      }),
+      babelPlugin({
+        transpileToES5: false,
+        allowConsole: false,
+      }),
+      ...compilePlugins,
+    ],
+  },
   {
     input: 'output/worker-thread/index.js',
     output: {

src/worker-thread/server-lib.ts

@@ -0,0 +1,7 @@
+import { Document } from './dom/Document';
+import { GlobalScope } from './WorkerDOMGlobalScope';
+
+export function createDocument() {
+  const win: GlobalScope = {} as any;
+  return new Document(win);
+}