fix

Author: chenjiahan

packages/compat/webpack/src/build.ts

@@ -16,6 +16,7 @@ export const build = async (
 
  if (customCompiler) {
  compiler = customCompiler;
+ bundlerConfigs = customCompiler.options as WebpackConfig[];
  } else {
  const result = await createCompiler(initOptions);
  compiler = result.compiler;