fix(build): make relative imports in amd/cjs relative to the current module instead of the baseURI

Author: dschmidt

packages/vite/src/node/build.ts

@@ -1338,6 +1338,13 @@ const relativeUrlMechanisms: Record<
 
 const customRelativeUrlMechanisms = {
   ...relativeUrlMechanisms,
+  // override amd to use module.uri instead of document.baseURI
+  amd: (relativePath) => {
+    if (relativePath[0] !== '.') relativePath = './' + relativePath
+    return getResolveUrl(
+      `require.toUrl('${escapeId(relativePath)}'), ((typeof module !== 'undefined' && module?.id) ? require.toUrl(module.id) : document.baseURI)`,
+    )
+  },
   'worker-iife': (relativePath) =>
     getResolveUrl(
       `'${escapeId(partialEncodeURIPath(relativePath))}', self.location.href`,