be smarter (attach to process.env for var replacment)

config/rollup.worker-thread.js

@@ -27,7 +27,7 @@ const ESModules = [
       replace({
         values: {
           WORKER_DOM_DEBUG: false,
-          IS_SERVER: true,
+          'process.env.SERVER': true,
         },
         preventAssignment: true,
       }),

src/main-thread/main-thread.d.ts

@@ -62,4 +62,3 @@ type RenderableElement = (HTMLElement | SVGElement | Text | Comment) & {
 
 declare const WORKER_DOM_DEBUG: boolean;
 declare const IS_AMP: boolean;
-declare const IS_SERVER: boolean;

src/test/Emitter.ts

@@ -28,7 +28,7 @@ export function emitter(document: Document): Emitter {
     subscribers.delete(callback);
   }
 
-  document.postMessage = (message: MutationFromWorker, buffers: Array<ArrayBuffer>) => {
+  document.postMessage = ((message: MutationFromWorker, buffers: Array<ArrayBuffer>) => {
     strings.push(...message[TransferrableKeys.strings]);
 
     let copy = new Map(subscribers);
@@ -38,7 +38,7 @@ export function emitter(document: Document): Emitter {
       }
       callback(strings, message, buffers);
     });
-  };
+  }) as any;
   document[TransferrableKeys.observe]();
 
   return {

src/worker-thread/MutationTransfer.ts

@@ -13,7 +13,7 @@ let pendingMutations: Array<number> = [];
 
 // TODO(choumx): Change `mutation` to Array<Uint16> to prevent casting errors e.g. integer underflow, precision loss.
 export function transfer(document: Document | DocumentStub, mutation: Array<number>): void {
-  if (IS_SERVER) {
+  if (process.env.SERVER) {
     return;
   }
 

src/worker-thread/dom/Node.ts

@@ -52,7 +52,7 @@ export abstract class Node {
     this.nodeType = nodeType;
     this.nodeName = nodeName;
     this.ownerDocument = ownerDocument || this;
-    if (IS_SERVER) {
+    if (process.env.SERVER) {
       return;
     }
 

src/worker-thread/nodes.ts

@@ -16,7 +16,7 @@ const mapping: Map<number, Node> = new Map();
  */
 export function storeOverride(node: Node, override: number): number {
   // Server version of the lib never transfers.
-  if (IS_SERVER) {
+  if (process.env.SERVER) {
     return 0;
   }
 
@@ -34,7 +34,7 @@ export function storeOverride(node: Node, override: number): number {
  */
 export function store(node: Node): number {
   // Server version of the lib never transfers.
-  if (IS_SERVER) {
+  if (process.env.SERVER) {
     return 0;
   }
 

src/worker-thread/strings.ts

@@ -9,7 +9,7 @@ const mapping: Map<string, number> = new Map();
  */
 export function store(value: string): number {
   // Server version of the lib never transfers.
-  if (IS_SERVER) {
+  if (process.env.SERVER) {
     return 0;
   }