Fix vega-lite integration

CHANGELOG.md

@@ -1,5 +1,9 @@
 This changelog is for the fork, not the [original mume library](https://github.com/shd101wyy/mume/).
 
+## Unreleased (patch)
+
+- Fix vega-lite integration
+
 ## 0.32.0
 
 - Upgrade vega to 5.20.2, vega-lite to 5.1.0, vega-embed to 6.17.0 and apache-arrow to 4.0.0

src/utility.ts

@@ -535,13 +535,20 @@ export function allowUnsafe<T>(fn: () => T): T {
 }
 
 export const loadDependency = (dependencyPath: string) =>
-  allowUnsafe(() =>
-    require(path.resolve(
+  allowUnsafe(() => {
+    // Unsetting global.module prevents libraries like vega-lite from calling require(), which does not work
+    const prevModule = global.module;
+    global.module = undefined;
+
+    const result = require(path.resolve(
       extensionDirectoryPath,
       "dependencies",
       dependencyPath,
-    )),
-  );
+    ));
+
+    global.module = prevModule;
+    return result;
+  });
 
 export const extractCommandFromBlockInfo = (info: BlockInfo) =>
   info.attributes["cmd"] === true ? info.language : info.attributes["cmd"];