message: fix: fixed npm devDependencies
diff: @@ -450,7 +450,7 @@ class App extends Generator {
  let yarnOpts = {} as any
  if (process.env.YARN_MUTEX) yarnOpts.mutex = process.env.YARN_MUTEX
  const install = (deps: string[], opts: object) => this.yarn ? this.yarnInstall(deps, opts) : this.npmInstall(deps, opts)
  - const dev = this.yarn ? {dev: true} : {only: 'dev'}
  + const dev = this.yarn ? {dev: true} : {'save-dev': true}
  Promise.all([
  install(devDependencies, {...yarnOpts, ...dev, ignoreScripts: true}),
  install(dependencies, yarnOpts),
  