transform.js

export default function transformer(file, { jscodeshift }) {
  const j = jscodeshift;
  return j(file.source)
    // search for "path" properties with matching value
    .find(j.Property, prop => {
      return prop.key.name === "path" && /division/.test(prop.value.value)
    })
    // go to enclosing object literal
    .closest(j.ObjectExpression)
    .forEach((objPath) => {
      // find a "tags" property
      const tagsProp = j(objPath).find(j.Property, prop => prop.key.name === "tags");
      // append element to its value
      tagsProp.get("value", "elements").value.push(j.literal("new-tag"));
    })
    .toSource();
}