fix extractAndLoadChunks for when there are no chunks to be loaded

src/webpack/webpack.ts

@@ -406,13 +406,15 @@ export function findExportedComponentLazy<T extends object = any>(...props: stri
     });
 }
 
+const DefaultExtractAndLoadChunksRegex = /(?:Promise\.all\((\[\i\.\i\(".+?"\).+?\])\)|Promise\.resolve\(\)).then\(\i\.bind\(\i,"(.+?)"\)\)/;
+
 /**
  * Extract and load chunks using their entry point
  * @param code An array of all the code the module factory containing the lazy chunk loading must include
  * @param matcher A RegExp that returns the chunk ids array as the first capture group and the entry point id as the second. Defaults to a matcher that captures the lazy chunk loading found in the module factory
  * @returns A promise that resolves when the chunks were loaded
  */
-export async function extractAndLoadChunks(code: string[], matcher: RegExp = /Promise\.all\((\[\i\.\i\(".+?"\).+?\])\).then\(\i\.bind\(\i,"(.+?)"\)\)/) {
+export async function extractAndLoadChunks(code: string[], matcher: RegExp = DefaultExtractAndLoadChunksRegex) {
     const module = findModuleFactory(...code);
     if (!module) {
         const err = new Error("extractAndLoadChunks: Couldn't find module factory");
@@ -434,7 +436,7 @@ export async function extractAndLoadChunks(code: string[], matcher: RegExp = /Pr
     }
 
     const [, rawChunkIds, entryPointId] = match;
-    if (!rawChunkIds || Number.isNaN(entryPointId)) {
+    if (Number.isNaN(entryPointId)) {
         const err = new Error("extractAndLoadChunks: Matcher didn't return a capturing group with the chunk ids array, or the entry point id returned as the second group wasn't a number");
         logger.warn(err, "Code:", code, "Matcher:", matcher);
 
@@ -445,9 +447,11 @@ export async function extractAndLoadChunks(code: string[], matcher: RegExp = /Pr
         return;
     }
 
-    const chunkIds = Array.from(rawChunkIds.matchAll(/\("(.+?)"\)/g)).map((m: any) => m[1]);
+    if (rawChunkIds) {
+        const chunkIds = Array.from(rawChunkIds.matchAll(/\("(.+?)"\)/g)).map((m: any) => m[1]);
+        await Promise.all(chunkIds.map(id => wreq.e(id)));
+    }
 
-    await Promise.all(chunkIds.map(id => wreq.e(id)));
     wreq(entryPointId);
 }
 
@@ -459,7 +463,7 @@ export async function extractAndLoadChunks(code: string[], matcher: RegExp = /Pr
  * @param matcher A RegExp that returns the chunk ids array as the first capture group and the entry point id as the second. Defaults to a matcher that captures the lazy chunk loading found in the module factory
  * @returns A function that returns a promise that resolves when the chunks were loaded, on first call
  */
-export function extractAndLoadChunksLazy(code: string[], matcher: RegExp = /Promise\.all\((\[\i\.\i\(".+?"\).+?\])\).then\(\i\.bind\(\i,"(.+?)"\)\)/) {
+export function extractAndLoadChunksLazy(code: string[], matcher = DefaultExtractAndLoadChunksRegex) {
     if (IS_DEV) lazyWebpackSearchHistory.push(["extractAndLoadChunks", [code, matcher]]);
 
     return () => extractAndLoadChunks(code, matcher);