Enumeration Lock

Possible options for row locking. Used in conjunction with find calls:

Usage:

import { LOCK } from '@sequelize/core';

Model.findAll({
  transaction,
  lock: LOCK.UPDATE,
});
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Postgres also supports specific locks while eager loading by using OF:

import { LOCK } from '@sequelize/core';

UserModel.findAll({
  transaction,
  lock: {
    level: LOCK.KEY_SHARE,
    of: UserModel,
  },
});
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UserModel will be locked but other models won't be!

Read more on transaction locks here