message: fix(core): utf8 -> utf-8
diff: @@ -141,7 +141,7 @@ export default class PluginAPI {
  );
  const absPath = join(this.service.paths.absTmpPath!, path);
  mkdirp.sync(dirname(absPath));
  - if (!existsSync(path) || readFileSync(path, 'utf8') !== content) {
  + if (!existsSync(path) || readFileSync(path, 'utf-8') !== content) {
  writeFileSync(absPath, content, 'utf-8');
  }
  }
  