afterBuild.js

import fs from 'fs';
import path from 'path';

function copyProtoFiles(sourceDir, targetDir) {
  // Ensure the target directory exists
  if (!fs.existsSync(targetDir)) {
    fs.mkdirSync(targetDir, { recursive: true });
  }

  // Function to recursively find all .proto files
  function findProtoFiles(dir, fileList = []) {
    const files = fs.readdirSync(dir, { withFileTypes: true });

    for (const file of files) {
      const filePath = path.join(dir, file.name);
      if (file.isDirectory()) {
        findProtoFiles(filePath, fileList);
      } else if (path.extname(file.name) === '.proto') {
        fileList.push(filePath);
      }
    }

    return fileList;
  }

  // Find all .proto files in the source directory and its subdirectories
  const protoFiles = findProtoFiles(sourceDir);

  // Copy each .proto file to the target directory
  for (const sourcePath of protoFiles) {
    const fileName = path.basename(sourcePath);

    // Copy mcs.proto to utils
    if (fileName === 'mcs.proto') {
      const utilsDir = path.join(targetDir, 'utils');
      if (!fs.existsSync(utilsDir)) {
        fs.mkdirSync(utilsDir, { recursive: true });
      }
      const targetPath = path.join(utilsDir, fileName);
      fs.copyFileSync(sourcePath, targetPath);
      console.log(`Copied: ${sourcePath} -> ${targetPath}`);
    }

    const targetPath = path.join(targetDir, fileName);
    fs.copyFileSync(sourcePath, targetPath);
    console.log(`Copied: ${sourcePath} -> ${targetPath}`);
  }
}

// Copy .proto files from src to dist
copyProtoFiles('src', 'dist');