codemod script to add import statement of `useEffectOnce`

add_import_statement.js

export default (fileInfo, api) => {
  const j = api.jscodeshift;
  const root = j(fileInfo.source);
  const importLine = `import useEffectOnce from 'utils/useEffectOnce';`;
  const imports = root.find(j.ImportDeclaration);
  const n = imports.length;

  j(imports.at(n - 1).get()).insertAfter(importLine); // after the imports

  return root.toSource();
};