helmet-transform.js

export default function transformer(file, api) {
  const j = api.jscodeshift;

  return j(file.source)
    /* get all imports with the right local name and source */
    .find(j.ImportDeclaration, {
      specifiers: [{
        local:{
          name:"Helmet"
        }
      }],
      source: {
        value: "@nfl/gridiron/addons"
      }
    }).forEach(statement => {
      /* replace with the new import */
      j(statement).replaceWith(j.importDeclaration(
        [
          j.importDefaultSpecifier(j.identifier("Helmet"))
        ],
      j.literal("react-helmet")
    ));
  }).toSource();
};