Function ManyToMany

packages/decorators/src/es/ManyToMany.ts:13–25

(
  entity?: ManyToManyOptions<Owner, Target> | string | (() => EntityName<Target> | EntityName<Target>[]),
  mappedBy?: (string & keyof Target) | ((e: Target) => any),
  options: Partial<ManyToManyOptions<Owner, Target>> = {},
)

/** Defines a many-to-many relationship (TC39 decorator). */
export function ManyToMany<Target extends object, Owner extends object>(
  entity?: ManyToManyOptions<Owner, Target> | string | (() => EntityName<Target> | EntityName<Target>[]),
  mappedBy?: (string & keyof Target) | ((e: Target) => any),
  options: Partial<ManyToManyOptions<Owner, Target>> = {},
): (_: unknown, context: ClassFieldDecoratorContext<Owner, Collection<Target> | undefined>) => void {
  return function (_: unknown, context: ClassFieldDecoratorContext<Owner, Collection<Target> | undefined>): void {
    const meta = prepareMetadataContext(context, ReferenceKind.MANY_TO_MANY);
    options = processDecoratorParameters<ManyToManyOptions<Owner, Target>>({ entity, mappedBy, options });
    const property = { name: context.name, kind: ReferenceKind.MANY_TO_MANY } as EntityProperty<Owner>;
    meta.properties[context.name as EntityKey<Owner>] ??= {} as any;
    Utils.mergeConfig(meta.properties[context.name as EntityKey<Owner>], property, options);
  };
}