Utils._ (lodash)

In utils.js we can find this piece of code:

const _ = require('lodash').runInContext(); // Prevent anyone messing with template settings by creating a fresh copy

So we are requesting out own instance of lodash that nobody has tempered with. However, all over the codebase lodash is most of the time required directly. Even more, this special instance is not even safe because in sequelize.js we can find:

/**
 * A reference to sequelize utilities. Most users will not need to use these utils directly. However, you might want to use `Sequelize.Utils._`, which is a reference to the lodash library, if you don't already have it imported in your project.
 * @property Utils
 */
Sequelize.prototype.Utils = Sequelize.Utils = Utils;

So we actually export this special lodash instance (and I don’t understand why - users can easily install require lodash themselves)

[janmeier]

Actually I think I we should remove the mention of utils completely from the docs

[janmeier]

Yeah, if we’re switching all usage of lodash templating to template strings there’s no really any reason to have a lodash reference in utils.

Originally we used run in context because a user reported problems with template strings - lodash allows you to override which characters are used in templates. But as you noticed, we’re not using it anyway…