如何在Sanity.io中创建唯一编号？

module.exports = function (api) {
  api.loadSource(async ({ addSchemaTypes }) => {
    const schema = `
      type MyDocument implements Document {
        _id: ID!
        uniqueId: String!
      }
    `;
    addSchemaTypes(schema);
  });

  api.onCreateNode(async ({ node, actions }) => {
    const { createNodeField } = actions;

    if (node.internal.type === 'MyDocument') {
      const uniqueId = generateUniqueId(); // 生成唯一编号的逻辑，可以根据需求自定义

      createNodeField({
        node,
        name: 'uniqueId',
        value: uniqueId,
      });
    }
  });
};