@nestjs/typeorm/dist/exceptions/duplicate-data-source.exception.js

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

import { DEFAULT_DATA_SOURCE_NAME } from '../typeorm.constants.js';
export class DuplicateDataSourceException extends Error {
    constructor(dataSourceName) {
        const isDefault = dataSourceName === DEFAULT_DATA_SOURCE_NAME;
        const descriptor = isDefault ? 'default (unnamed)' : `"${dataSourceName}"`;
        super(`A data source with the ${descriptor} name is already registered. ` +
            `Multiple data sources must be registered with unique names; otherwise, ` +
            `they will override each other. Please assign a unique "name" property ` +
            `to each TypeOrmModule.forRoot()/forRootAsync() registration.`);
    }
}