only copy local imports

Author: mbostock

src/build.ts

@@ -43,7 +43,7 @@ export async function build(context: CommandContext = makeCommandContext()) {
       resolver
     });
     files.push(...render.files.map((f) => join(dirname(sourceFile), f.name)));
-    files.push(...render.imports.map((f) => join(dirname(sourceFile), f.name)));
+    files.push(...render.imports.filter((i) => i.type === "local").map((i) => join(dirname(sourceFile), i.name)));
     await prepareOutput(outputPath);
     await writeFile(outputPath, render.html);
   }