Logging

runSeeders is silent by default (logging: false). Pass logging to opt into output:

[UserSeeder] Starting...
[UserSeeder] Done in 42ms
[UserSeeder] Failed after 3ms   ← logged at warn level

logging: true — console logger

Routes output through ConsoleLogger, which wraps the global console. Progress messages use console.log; failures use console.warn.

await runSeeders([UserSeeder], { logging: true })

Supply a custom logger via the logger option — any object implementing SeederLogger works:

await runSeeders([UserSeeder], {
  logging: true,
  logger: {
    log: (msg) => myLogger.info(msg),
    warn: (msg) => myLogger.warn(msg),
    info: () => {},
    error: () => {},
    debug: () => {},
  },
})

logging: 'typeorm' — TypeORM logger

Delegates to TypeORM's logger on the provided dataSource. Output follows TypeORM's own logging configuration — if TypeORM logging is disabled, seeder output is suppressed too. Silently no-ops if no dataSource is available.

await runSeeders([UserSeeder], { dataSource, logging: 'typeorm' })

If your DataSource uses a custom TypeORM logger, that logger is used automatically — no extra wiring needed.