Construct the web workers in child classes since they are not transpiled during build otherwise

Author: twwd

src/lib/worker/GraphWorkerWrapper.ts

@@ -4,34 +4,23 @@ import Graph from 'graphology';
 import type { Bom } from '$lib/cyclonedx/models';
 
 abstract class GraphWorkerWrapper<PayloadType> {
-	private _worker?: Worker;
-	private readonly _workerUrl: URL;
+	private readonly _worker: Worker;
 	private readonly _onGraph: (graph: AbstractGraph) => void;
 
-	protected constructor(workerUrl: URL, onGraph: (graph: AbstractGraph) => void) {
-		this._workerUrl = workerUrl;
+	protected constructor(worker: Worker, onGraph: (graph: AbstractGraph) => void) {
+		this._worker = worker;
+		this._worker.onmessage = ({
+			data: { payload }
+		}: MessageEvent<PostMessage<SerializedGraph>>) => {
+			if (payload) {
+				this._onGraph(new Graph().import(payload));
+			}
+		};
 		this._onGraph = onGraph;
 	}
 
-	get worker() {
-		if (!this._worker) {
-			this._worker = new Worker(this._workerUrl, {
-				type: 'module'
-			});
-
-			this._worker.onmessage = ({
-				data: { payload }
-			}: MessageEvent<PostMessage<SerializedGraph>>) => {
-				if (payload) {
-					this._onGraph(new Graph().import(payload));
-				}
-			};
-		}
-		return this._worker;
-	}
-
 	sendMessage(payload: PayloadType) {
-		this.worker.postMessage({
+		this._worker.postMessage({
 			payload: payload
 		});
 	}
@@ -45,12 +34,22 @@ abstract class GraphWorkerWrapper<PayloadType> {
 
 export class TreeGenerationWorkerWrapper extends GraphWorkerWrapper<Bom> {
 	constructor(onGraph: (graph: AbstractGraph) => void) {
-		super(new URL('$lib/worker/tree-generation.ts', import.meta.url), onGraph);
+		super(
+			new Worker(new URL('$lib/worker/tree-generation.ts', import.meta.url), {
+				type: 'module'
+			}),
+			onGraph
+		);
 	}
 }
 
 export class LayoutGraphWorkerWrapper extends GraphWorkerWrapper<SerializedGraph> {
 	constructor(onGraph: (graph: AbstractGraph) => void) {
-		super(new URL('$lib/worker/layout-graph.ts', import.meta.url), onGraph);
+		super(
+			new Worker(new URL('$lib/worker/layout-graph.ts', import.meta.url), {
+				type: 'module'
+			}),
+			onGraph
+		);
 	}
 }