sequelize_validate_issue.js

const Sequelize = require('sequelize');

async function main() {
  const sequelize = new Sequelize(null, null, null, {
    dialect: 'sqlite',
    storage: ':memory:',
  });

  await sequelize.query('CREATE TABLE things (id INTEGER PRIMARY KEY, aColumn TEXT DEFAULT NULL)');

  const Thing = await sequelize.define('thing', {
    aColumn: {
      type: Sequelize.STRING,
      allowNull: true,
      validate: {
        customValidator() {
          throw Error('Why is this being run???');
        }
      }
    }
  }, {timestamps: false});

  // This throws.  It shouldn't.
  await Thing.create();
}

main();