diff --git a/Deno/Packages/BuildTools/all-typescript-packages.ts b/Deno/Packages/BuildTools/all-typescript-packages.ts
index 425cc6d3..682314dc 100644
--- a/Deno/Packages/BuildTools/all-typescript-packages.ts
+++ b/Deno/Packages/BuildTools/all-typescript-packages.ts
@@ -2,6 +2,8 @@
 // to use with vendoring / lock file creation
 
 import '../BuildTools/make-main.ts';
+import '../BuildTools/make-vireo-dataurl.ts';
 import '../TypeScript/Deno/deno.ts';
 import '../TypeScript/DenoHTTP/deno-http.ts';
 import '../TypeScript/Runtime/runtime-helper.ts';
+import '../TypeScript/Runtime/runtime-helper.test.ts';
diff --git a/Deno/Packages/BuildTools/make-main.ts b/Deno/Packages/BuildTools/make-main.ts
index d17b5820..6da4c78c 100644
--- a/Deno/Packages/BuildTools/make-main.ts
+++ b/Deno/Packages/BuildTools/make-main.ts
@@ -2,7 +2,6 @@ import { DOMParser, Element, Node } from 'deno_dom/deno-dom-wasm.ts';
 
 // Assumes main.html is at the root of the WebApp build output
 const htmlUrl = new URL('../../Builds/Server_Default Web Server/main.html', import.meta.url);
-await makeMain(htmlUrl);
 
 interface ExtractedUrls {
     vireoSource: string;
@@ -61,3 +60,7 @@ function extractUrls (html: string): ExtractedUrls {
     };
     return extractedUrls;
 }
+
+if (import.meta.main) {
+    await makeMain(htmlUrl);
+}
diff --git a/Deno/Packages/BuildTools/make-vireo-dataurl.ts b/Deno/Packages/BuildTools/make-vireo-dataurl.ts
index c5a1c63a..886712d7 100644
--- a/Deno/Packages/BuildTools/make-vireo-dataurl.ts
+++ b/Deno/Packages/BuildTools/make-vireo-dataurl.ts
@@ -5,8 +5,6 @@ const encodedData = encode(data);
 const vireoDataUrlContents = `export const vireoDataUrl = 'data:application/wasm;base64,${encodedData}';`;
 const vireoDataUrlContentsPath = new URL('../TypeScript/Runtime/Support/vireo-data-url.js', import.meta.url);
 
-await Deno.writeTextFile(vireoDataUrlContentsPath, vireoDataUrlContents);
-
 function encode (data: Uint8Array) {
     let binaryString = '';
     for (let i = 0; i < data.length; i++) {
@@ -15,3 +13,7 @@ function encode (data: Uint8Array) {
     const encodedData = btoa(binaryString);
     return encodedData;
 };
+
+if (import.meta.main) {
+    await Deno.writeTextFile(vireoDataUrlContentsPath, vireoDataUrlContents);
+}
diff --git a/Deno/deno.json b/Deno/deno.json
index c2dd577f..310c8215 100644
--- a/Deno/deno.json
+++ b/Deno/deno.json
@@ -13,7 +13,8 @@
     "env": "export DENO_TLS_CA_STORE=mozilla,system",
     "tool:rebuild-vireo-data-url": "deno run -A ./Packages/BuildTools/make-vireo-dataurl.ts",
     "tool:deno-test": "deno test -A",
-    "tool:deno-compile": "deno task env && deno task build && deno compile -A \"./Builds/Server_Default Web Server/main.ts\""
+    "tool:deno-compile": "deno task env && deno task build && deno compile -A \"./Builds/Server_Default Web Server/main.ts\"",
+    "tool:deno-cache": "deno cache ./Packages/BuildTools/all-typescript-packages.ts"
   },
   "imports": {
     "std/": "https://deno.land/std@0.194.0/",