_command

./modify-component.js "<file_contents>" -c state -p "New Prop Value"

modify-component.js

#!/usr/bin/env node
const fs = require('fs');
const commander = require('commander');
const { program } = commander;
const { init, parse } = require('es-module-lexer');
const vm = require('vm');

// Define your custom module loader and manipulation logic here (as shown in previous examples).

program
  .argument('<fileContents>', 'File contents before modification')
  .option('-c, --command <command>', 'Modification command')
  .option('-p, --propValue <propValue>', 'New prop value for state modification');

program.parse(process.argv);

async function main() {
  const { fileContents, command, propValue } = program.opts();

  // Initialize the module lexer
  await init();

  // Create a context to evaluate the module code
  const context = { exports: {} };

  // Run the module code with the provided file contents in the context
  vm.runInContext(fileContents, context, { filename: 'YourComponent.tsx' });

  // Apply modifications based on the command
  if (command === 'state') {
    // Example: Modify the component's state
    if (context.exports.default) {
      const component = context.exports.default;
      if (component.props) {
        component.props.someProp = propValue || 'Default Prop Value';
      }
    }
  }

  // Serialize the updated exports back into JavaScript module code
  const updatedModuleCode = `export default ${JSON.stringify(context.exports)};\n`;

  // Print the updated module code (or save it to a file, as needed)
  console.log(updatedModuleCode);
}

main();