const copy = require('@fibjs/copy');

copy('path to source', 'path to target');

copy('path to source', 'path to target', data => {
  // process the file buffer before write to the target
  return data.toString() + 'foo';
});

copy('path to source', 'path to target', (data, dir) => {
  if (dir.src.endsWith('xxx')) {
    // ignore this path
    return false;
  }
  return data;
});

copy('path to source', 'path to target', () => {
  // doing nothing
  return true;
});