message: Configure builder config to include sourcemaps
diff: @@ -64,6 +64,7 @@ export const makeConfigs = async (
  entryFileNames: 'index.cjs.js',
  chunkFileNames: 'cjs/[name]-[hash].js',
  format: 'commonjs',
  + sourcemap: true,
  });
  }
  if (options.outputs.has(Output.esm)) {
  @@ -72,6 +73,7 @@ export const makeConfigs = async (
  entryFileNames: 'index.esm.js',
  chunkFileNames: 'esm/[name]-[hash].js',
  format: 'module',
  + sourcemap: true,
  });
  // Assume we're building for the browser if ESM output is included
  mainFields.unshift('browser');
  