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DataLoader issue with $in

See original GitHub issue

When I use the following from the example

  const users = await models.User.findAll({
    where: {
      id: {
        $in: keys,
      },
    },
  });

I get the following error

{
  "errors": [
    {
      "message": "Invalid value { '$in': [ 1, 2, 3 ] }",
      "locations": [
        {
          "line": 4,
          "column": 5
        }
      ],
      "path": [
        "accounts",
        0,
        "user"
      ],
      "extensions": {
        "code": "INTERNAL_SERVER_ERROR",
        "exception": {
          "stacktrace": [
            "Error: Invalid value { '$in': [ 1, 2, 3 ] }",
            "    at Object.escape (/Users/***/Documents/code/*** /***-server/node_modules/sequelize/lib/sql-string.js:66:11)",
            "    at Object.escape (/Users/***/Documents/code/*** /***-server/node_modules/sequelize/lib/dialects/abstract/query-generator.js:936:22)",
            "    at Object._whereParseSingleValueObject (/Users/***/Documents/code/*** /***-server/node_modules/sequelize/lib/dialects/abstract/query-generator.js:2432:41)",
            "    at Object.whereItemQuery (/Users/***/Documents/code/*** /***-server/node_modules/sequelize/lib/dialects/abstract/query-generator.js:2136:21)",
            "    at Utils.getComplexKeys.forEach.prop (/Users/***/Documents/code/*** /***-server/node_modules/sequelize/lib/dialects/abstract/query-generator.js:1997:25)",
            "    at Array.forEach (<anonymous>)",
            "    at Object.whereItemsQuery (/Users/***/Documents/code/*** /***-server/node_modules/sequelize/lib/dialects/abstract/query-generator.js:1995:35)",
            "    at Object.getWhereConditions (/Users/***/Documents/code/*** /***-server/node_modules/sequelize/lib/dialects/abstract/query-generator.js:2459:19)",
            "    at Object.selectQuery (/Users/***/Documents/code/*** /***-server/node_modules/sequelize/lib/dialects/abstract/query-generator.js:1143:28)",
            "    at QueryInterface.select (/Users/***/Documents/code/*** /***-server/node_modules/sequelize/lib/query-interface.js:1105:27)",
            "    at Promise.try.then.then.then (/Users/***/Documents/code/*** /***-server/node_modules/sequelize/lib/model.js:1598:34)",
            "    at tryCatcher (/Users/***/Documents/code/*** /***-server/node_modules/bluebird/js/release/util.js:16:23)",
            "    at Promise._settlePromiseFromHandler (/Users/***/Documents/code/*** /***-server/node_modules/bluebird/js/release/promise.js:512:31)",
            "    at Promise._settlePromise (/Users/***/Documents/code/*** /***-server/node_modules/bluebird/js/release/promise.js:569:18)",
            "    at Promise._settlePromise0 (/Users/***/Documents/code/*** /***-server/node_modules/bluebird/js/release/promise.js:614:10)",
            "    at Promise._settlePromises (/Users/***/Documents/code/*** /***-server/node_modules/bluebird/js/release/promise.js:694:18)",
            "    at _drainQueueStep (/Users/***/Documents/code/*** /***-server/node_modules/bluebird/js/release/async.js:138:12)",
            "    at _drainQueue (/Users/***/Documents/code/*** /***-server/node_modules/bluebird/js/release/async.js:131:9)",
            "    at Async._drainQueues (/Users/***/Documents/code/*** /***-server/node_modules/bluebird/js/release/async.js:147:5)",
            "    at Immediate.Async.drainQueues [as _onImmediate] (/Users/***/Documents/code/*** /***-server/node_modules/bluebird/js/release/async.js:17:14)",
            "    at processImmediate (timers.js:632:19)"
          ]
        }
      }
    }
  ],
  "data": {
    "accounts": null
  }
}

if I change it to the following then everything works

  const users = await models.User.findAll({
    where: {
      id: keys,
    },
  });

I don’t know if this is because I have a newer package or something. But it took me hours to figure it out, so I figured I would share with everyone else