error cannot find module 'resolve-cwd' webpack --json code example

Example 1: Error: Cannot find module 'webpack-dev-server'

npm install --save-dev webpack-dev-middleware webpack-hot-middleware

Example 2: webpack Module not found: Error: Can't resolve '../

resolve: {
    modules: [resolve(process.cwd(), 'src'), 'node_modules'],
    extensions: ['*', '.js', '.jsx', '.json'],
    symlinks: false,
    cacheWithContext: false
  }