diff --git a/build/lib/mangle/index.js b/build/lib/mangle/index.js
index 14137c0db31..bb6b414e845 100644
--- a/build/lib/mangle/index.js
+++ b/build/lib/mangle/index.js
@@ -5,6 +5,7 @@
  *--------------------------------------------------------------------------------------------*/
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.Mangler = void 0;
+const v8 = require("node:v8");
 const fs = require("fs");
 const path = require("path");
 const process_1 = require("process");
@@ -293,19 +294,17 @@ const skippedExportMangledSymbols = [
 class DeclarationData {
     fileName;
     node;
-    service;
     replacementName;
-    constructor(fileName, node, service, fileIdents) {
+    constructor(fileName, node, fileIdents) {
         this.fileName = fileName;
         this.node = node;
-        this.service = service;
         // Todo: generate replacement names based on usage count, with more used names getting shorter identifiers
         this.replacementName = fileIdents.next();
     }
-    get locations() {
+    getLocations(service) {
         if (ts.isVariableDeclaration(this.node)) {
             // If the const aliases any types, we need to rename those too
-            const definitionResult = this.service.getDefinitionAndBoundSpan(this.fileName, this.node.name.getStart());
+            const definitionResult = service.getDefinitionAndBoundSpan(this.fileName, this.node.name.getStart());
             if (definitionResult?.definitions && definitionResult.definitions.length > 1) {
                 return definitionResult.definitions.map(x => ({ fileName: x.fileName, offset: x.textSpan.start }));
             }
@@ -404,7 +403,7 @@ class Mangler {
                     if (isInAmbientContext(node)) {
                         return;
                     }
-                    this.allExportedSymbols.add(new DeclarationData(node.getSourceFile().fileName, node, service, fileIdents));
+                    this.allExportedSymbols.add(new DeclarationData(node.getSourceFile().fileName, node, fileIdents));
                 }
             }
             ts.forEachChild(node, visit);
@@ -528,7 +527,7 @@ class Mangler {
                 continue;
             }
             const newText = data.replacementName;
-            for (const { fileName, offset } of data.locations) {
+            for (const { fileName, offset } of data.getLocations(service)) {
                 queueRename(fileName, offset, newText);
             }
         }
@@ -615,7 +614,7 @@ class Mangler {
         }
         service.dispose();
         this.renameWorkerPool.terminate();
-        this.log(`Done: ${savedBytes / 1000}kb saved, memory-usage: ${JSON.stringify(process.memoryUsage())}`);
+        this.log(`Done: ${savedBytes / 1000}kb saved, memory-usage: ${JSON.stringify(v8.getHeapStatistics())}`);
         return result;
     }
 }
diff --git a/build/lib/mangle/index.ts b/build/lib/mangle/index.ts
index ec023535975..4a7544f162b 100644
--- a/build/lib/mangle/index.ts
+++ b/build/lib/mangle/index.ts
@@ -3,6 +3,7 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 
+import * as v8 from 'node:v8';
 import * as fs from 'fs';
 import * as path from 'path';
 import { argv } from 'process';
@@ -338,17 +339,16 @@ class DeclarationData {
 	constructor(
 		readonly fileName: string,
 		readonly node: ts.FunctionDeclaration | ts.ClassDeclaration | ts.EnumDeclaration | ts.VariableDeclaration,
-		private readonly service: ts.LanguageService,
 		fileIdents: ShortIdent,
 	) {
 		// Todo: generate replacement names based on usage count, with more used names getting shorter identifiers
 		this.replacementName = fileIdents.next();
 	}
 
-	get locations(): Iterable<{ fileName: string; offset: number }> {
+	getLocations(service: ts.LanguageService): Iterable<{ fileName: string; offset: number }> {
 		if (ts.isVariableDeclaration(this.node)) {
 			// If the const aliases any types, we need to rename those too
-			const definitionResult = this.service.getDefinitionAndBoundSpan(this.fileName, this.node.name.getStart());
+			const definitionResult = service.getDefinitionAndBoundSpan(this.fileName, this.node.name.getStart());
 			if (definitionResult?.definitions && definitionResult.definitions.length > 1) {
 				return definitionResult.definitions.map(x => ({ fileName: x.fileName, offset: x.textSpan.start }));
 			}
@@ -471,7 +471,7 @@ export class Mangler {
 						return;
 					}
 
-					this.allExportedSymbols.add(new DeclarationData(node.getSourceFile().fileName, node, service, fileIdents));
+					this.allExportedSymbols.add(new DeclarationData(node.getSourceFile().fileName, node, fileIdents));
 				}
 			}
 
@@ -620,7 +620,7 @@ export class Mangler {
 			}
 
 			const newText = data.replacementName;
-			for (const { fileName, offset } of data.locations) {
+			for (const { fileName, offset } of data.getLocations(service)) {
 				queueRename(fileName, offset, newText);
 			}
 		}
@@ -723,7 +723,8 @@ export class Mangler {
 
 		service.dispose();
 		this.renameWorkerPool.terminate();
-		this.log(`Done: ${savedBytes / 1000}kb saved, memory-usage: ${JSON.stringify(process.memoryUsage())}`);
+
+		this.log(`Done: ${savedBytes / 1000}kb saved, memory-usage: ${JSON.stringify(v8.getHeapStatistics())}`);
 		return result;
 	}
 }