mingo/esm/operators/update/rename.js

MongoDB query language for in-memory objects

import { assert, has } from "../../util";
import { applyUpdate, DEFAULT_OPTIONS, walkExpression } from "./_internal";
import { $set } from "./set";
const isIdPath = (path, idKey) => path === idKey || path.startsWith(`${idKey}.`);
const $rename = (obj, expr, arrayFilters = [], options = DEFAULT_OPTIONS) => {
  const idKey = options.idKey;
  for (const target of Object.values(expr)) {
    assert(
      !isIdPath(target, idKey),
      `Performing an update on the path '${target}' would modify the immutable field '${idKey}'.`
    );
  }
  const res = [];
  const changed = walkExpression(
    expr,
    arrayFilters,
    options,
    (val, node, queries) => {
      return applyUpdate(obj, node, queries, (o, k) => {
        if (!has(o, k)) return false;
        Array.prototype.push.apply(
          res,
          $set(obj, { [val]: o[k] }, arrayFilters, options)
        );
        delete o[k];
        return true;
      });
    }
  );
  return Array.from(new Set(changed.concat(res)));
};
export {
  $rename
};