tweak types

packages/cli/src/commands/plugin/build.ts

@@ -14,13 +14,13 @@
  * limitations under the License.
  */
 
-import { rollup, watch, RollupWatchOptions, OutputOptions } from 'rollup';
+import { rollup, watch, OutputOptions } from 'rollup';
 import conf from './rollup.config';
 import { Command } from 'commander';
 
 export default async (cmd: Command) => {
   if (cmd.watch) {
-    const watcher = watch(conf as RollupWatchOptions);
+    const watcher = watch(conf);
     watcher.on('event', console.log);
     await new Promise(() => {});
   } else {

packages/cli/src/commands/plugin/rollup.config.ts

@@ -20,6 +20,7 @@ import commonjs from '@rollup/plugin-commonjs';
 import resolve from '@rollup/plugin-node-resolve';
 import postcss from 'rollup-plugin-postcss';
 import imageFiles from 'rollup-plugin-image-files';
+import { RollupWatchOptions } from 'rollup';
 
 export default {
   input: 'src/index.ts',
@@ -38,4 +39,4 @@ export default {
     imageFiles(),
     typescript(),
   ],
-};
+} as RollupWatchOptions;