@rvkang/batch-nest

NestJS module, decorator discovery, and runtime integration for nest-batch.

Install

pnpm add @rvkang/batch-nest
pnpm add @rvkang/batch-core @rvkang/batch-inmemory @nestjs/common @nestjs/core reflect-metadata

@nestjs/common, @nestjs/core, and reflect-metadata are peer dependencies.

Configure a module

import "reflect-metadata";
import { defineStep } from "@rvkang/batch-core";
import { Module } from "@nestjs/common";
import { NestFactory } from "@nestjs/core";
import { InMemoryBatchStorage } from "@rvkang/batch-inmemory";
import { BatchJob, BatchStep, NestBatchModule } from "@rvkang/batch-nest";

@BatchJob("hello")
class HelloJob {
  @BatchStep("log")
  log() {
    return defineStep({ name: "log", execute: async () => "done" });
  }
}

@Module({
  imports: [NestBatchModule.forRoot({ storage: new InMemoryBatchStorage() })],
  providers: [HelloJob]
})
export class AppModule {}

const app = await NestFactory.createApplicationContext(AppModule, { logger: false });
await app.close();

InMemoryBatchStorage is non-durable; use a SQL storage adapter when execution history, checkpoints, restart, or multi-process coordination must survive a process restart. Make writer side effects idempotent for at-least-once work.

Links

• Repository
• Issues

License

MIT