Replace all references - Sanity

replaceRefs.js

// import and configure the client

const oldRef = "abc123"
const newRef = "def456"

client
  .fetch(
    `*[references($oldRef)][0...250] {
    _id,
    _rev,
  }`,
    { oldRef }
  )
  .then((docs) => {
    const tx = docs.reduce(
      (tx, doc) =>
        tx.patch(doc._id, {
          ifRevisionID: doc._rev,
          set: {
            [`..[_ref == "${oldRef}"]._ref`]: newRef,
          },
        }),
      client.transaction()
    );

    tx.commit();
  });