@mikro-orm/core/entity/PolymorphicRef.js

TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns. Supports MongoDB, MySQL, PostgreSQL and SQLite databases as well as usage with vanilla JavaScript.

import { Utils } from '../utils/Utils.js';
/**
 * Wrapper class for polymorphic relation reference data.
 * Holds the discriminator value (type identifier) and the primary key value(s).
 * Used internally to track polymorphic FK values before hydration.
 */
export class PolymorphicRef {
    discriminator;
    id;
    constructor(discriminator, id) {
        this.discriminator = discriminator;
        this.id = id;
    }
    /** Returns `[discriminator, ...idValues]` tuple suitable for column-level expansion. */
    toTuple() {
        return [this.discriminator, ...Utils.asArray(this.id)];
    }
}