sequelize/lib/associations/base.js

Sequelize is a promise-based Node.js ORM tool for Postgres, MySQL, MariaDB, SQLite, Microsoft SQL Server, Amazon Redshift and Snowflake’s Data Cloud. It features solid transaction support, relations, eager and lazy loading, read replication and more.

"use strict";
const { AssociationError } = require("./../errors");
class Association {
  constructor(source, target, options = {}) {
    this.source = source;
    this.target = target;
    this.options = options;
    this.scope = options.scope;
    this.isSelfAssociation = this.source === this.target;
    this.as = options.as;
    this.associationType = "";
    if (source.hasAlias(options.as)) {
      throw new AssociationError(`You have used the alias ${options.as} in two separate associations. Aliased associations must have unique aliases.`);
    }
  }
  toInstanceArray(input) {
    if (!Array.isArray(input)) {
      input = [input];
    }
    return input.map((element) => {
      if (element instanceof this.target)
        return element;
      const tmpInstance = {};
      tmpInstance[this.target.primaryKeyAttribute] = element;
      return this.target.build(tmpInstance, { isNewRecord: false });
    });
  }
  [Symbol.for("nodejs.util.inspect.custom")]() {
    return this.as;
  }
}
module.exports = Association;
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