group-by-groupsize.js

let data = Array.from({ length: 10 }, (_, i) => `item${i + 1}`);
let packageNameCounter = 0;

// Function to group array elements into packages
function groupArrayElements(list, groupSize) {
  // Base case: if the list is small enough, return it as a single package
  if (list.length <= groupSize) {
    return [{
      packageName: 'Pkg' + packageNameCounter++,
      items: list
    }];
  }

  let groupedPackages = [];

  // Split the list into smaller groups, each becoming a package
  while (list.length > 0) {
    let slice = list.splice(0, groupSize);
    groupedPackages.push({
      packageName: 'Pkg' + packageNameCounter++,
      items: slice
    });
  }

  // Recursive case: Group packages further if they exceed the group size
  if (groupedPackages.length > groupSize) {
    return groupArrayElements(groupedPackages, groupSize);
  }

  return groupedPackages;
}

let packageData = groupArrayElements(data, 2);

walk-tree.js

// Helper function to walk through the package tree
function walkPackageTree(packageTree, callback) {
  packageTree.forEach(pkg => {
    // Execute the callback on the current package
    callback(pkg);

    // If the package has items that are themselves packages, recursively walk through them
    if (pkg.items && pkg.items[0] && pkg.items[0].packageName) {
      walkPackageTree(pkg.items, callback);
    }
  });
}

// Example usage: Print package names
walkPackageTree(packageData, (pkg) => {
  console.log('Package Name:', pkg.packageName);
});