Flutter snippets for making stateful and stateless widgets. Open Visual Studio Code press "Control+Shift+P", Search for Snippet, then choose dart. and paste this code to that "dart.json" file and save it.

dart.json

{
    "stateless": {
      "prefix": "stless",
      "body": [
        "class $1 extends StatelessWidget {",
        "\t@override",
        "\tWidget build(BuildContext context) {",
        "\t\treturn Container(",
        "\t\t\t$2",
        "\t\t);",
        "\t}",
        "}"
      ]
    },
  
    "stateful": {
      "prefix": "stfull",
      "body": [
        "class $1 extends StatefulWidget {",
        "\t@override",
        " \t_$1State createState() => _$1State();",
        "}",
  
        "class _$1State extends State<$1> {",
        " \t@override",
        " \tWidget build(BuildContext context) {",
        "\t\treturn Container(",
        " \t\t\t$2",
        "\t\t);",
        "\t}",
        "} "
      ]
    }
    
  }