mingo/esm/operators/expression/set/setIsSubset.js

MongoDB query language for in-memory objects

import { evalExpr } from "../../../core/_internal";
import { assert, HashMap, isArray } from "../../../util";
import { errExpectArray } from "../_internal";
const OP = "$setIsSubset";
const $setIsSubset = (obj, expr, options) => {
  assert(isArray(expr) && expr.length === 2, `${OP} expects array(2)`);
  const args = evalExpr(obj, expr, options);
  if (!args.every(isArray))
    return errExpectArray(options.failOnError, `${OP} arguments`);
  const [first, second] = args;
  const map = HashMap.init();
  for (const v of second) map.set(v, 0);
  for (const v of first) if (!map.has(v)) return false;
  return true;
};
export {
  $setIsSubset
};