BASICscratchthingy

(function(Scratch) {
  'use strict';

  // BASIC interpreter initialization
  function runBASIC(code) {
    try {
      const interpreter = new BASICInterpreter();
      interpreter.run(code);
      return interpreter.output;
    } catch (error) {
      return `Error: ${error.message}`;
    }
  }

  class BASICExtension {
    getInfo() {
      return {
        id: 'basicRunner',
        name: 'BASIC Runner',
        blocks: [
          {
            opcode: 'runBASIC',
            blockType: Scratch.BlockType.REPORTER,
            text: 'run BASIC code [code]',
            arguments: {
              code: {
                type: Scratch.ArgumentType.STRING,
                defaultValue: 'PRINT "Hello, World!"'
              }
            }
          }
        ]
      };
    }

    runBASIC(args) {
      return runBASIC(args.code);
    }
  }

  Scratch.extensions.register(new BASICExtension());
})(Scratch);