From 69b62d070dca17178dbcd9f3de4630cd84ed16e2 Mon Sep 17 00:00:00 2001
From: Matt McCormick <matt.mccormick@kitware.com>
Date: Sat, 21 Jan 2023 12:32:34 -0500
Subject: [PATCH] feat(runPipeline): Support passing null pipelineWorkerUrl

Adds the ability to use a bundler vendored pipeline worker.
---
 src/core/createWebWorkerPromise.ts | 2 +-
 src/pipeline/runPipeline.ts        | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/core/createWebWorkerPromise.ts b/src/core/createWebWorkerPromise.ts
index e03d01936..d5f5d7052 100644
--- a/src/core/createWebWorkerPromise.ts
+++ b/src/core/createWebWorkerPromise.ts
@@ -13,7 +13,7 @@ interface itkWorker extends Worker {
 }
 
 // Internal function to create a web worker promise
-async function createWebWorkerPromise (existingWorker: Worker | null, pipelineWorkerUrl?: string): Promise<createWebWorkerPromiseResult> {
+async function createWebWorkerPromise (existingWorker: Worker | null, pipelineWorkerUrl?: string | null): Promise<createWebWorkerPromiseResult> {
   let workerPromise: typeof WebworkerPromise
   if (existingWorker != null) {
     // See if we have a worker promise attached the worker, if so reuse it. This ensures
diff --git a/src/pipeline/runPipeline.ts b/src/pipeline/runPipeline.ts
index 0ff8d6cc2..39a9ea44e 100644
--- a/src/pipeline/runPipeline.ts
+++ b/src/pipeline/runPipeline.ts
@@ -48,7 +48,7 @@ async function runPipeline (
   outputs: PipelineOutput[] | null,
   inputs: PipelineInput[] | null,
   pipelineBaseUrl: string | URL = 'pipelinesUrl',
-  pipelineWorkerUrl?: string | URL
+  pipelineWorkerUrl?: string | URL | null
 ): Promise<RunPipelineResult> {
   if (webWorker === false) {
     const pipelineModule = await loadPipelineModule(pipelinePath.toString())
@@ -58,7 +58,7 @@ async function runPipeline (
   let worker = webWorker
   const pipelineWorkerUrlString = typeof pipelineWorkerUrl !== 'string' && typeof pipelineWorkerUrl?.href !== 'undefined' ? pipelineWorkerUrl.href : pipelineWorkerUrl
   const { webworkerPromise, worker: usedWorker } = await createWebWorkerPromise(
-    worker as Worker | null, pipelineWorkerUrlString as string | undefined
+    worker as Worker | null, pipelineWorkerUrlString as string | undefined | null
   )
   worker = usedWorker
   const transferables: ArrayBuffer[] = []