@nestjs/typeorm/dist/typeorm.providers.js

TypeORM for NestJS: connections and repositories through dependency injection, entities, transactions and multiple databases.

import { EntitySchema, getMetadataArgsStorage } from 'typeorm';
import { getDataSourceToken, getRepositoryToken, } from './common/typeorm.utils.js';
export function createTypeOrmProviders(entities, dataSource) {
    return (entities || []).map((entity) => ({
        provide: getRepositoryToken(entity, dataSource),
        useFactory: (dataSource) => {
            if (dataSource.options.type === 'mongodb') {
                return dataSource.getMongoRepository(entity);
            }
            const target = entity instanceof EntitySchema
                ? (entity.options.target ?? entity.options.name)
                : entity;
            const entityMetadata = dataSource.entityMetadatas.find((meta) => meta.target === target);
            const isTreeEntity = typeof entityMetadata?.treeType !== 'undefined';
            return isTreeEntity
                ? dataSource.getTreeRepository(entity)
                : dataSource.getRepository(entity);
        },
        inject: [getDataSourceToken(dataSource)],
        /**
         * Extra property to workaround dynamic modules serialisation issue
         * that occurs when "TypeOrm#forFeature()" method is called with the same number
         * of arguments and all entities share the same class names.
         */
        targetEntitySchema: getMetadataArgsStorage().tables.find((item) => item.target === entity),
    }));
}