Let’s take a look at a basic trigger.config.ts file. This is generated for you when you follow the quick start guide. This file is used to configure your project and how it’s bundled.
trigger.config.ts
import type { TriggerConfig } from "@trigger.dev/sdk/v3";

export const config: TriggerConfig = {
  //Your project ref (you can see it on the Project settings page in the dashboard)
  project: "proj_gtcwttqhhtlasxgfuhxs",
  retries: {
    //If you want to retry a task in dev mode (when using the CLI)
    enabledInDev: false,
    //the default retry settings. Used if you don't specify on a task.
    default: {
      maxAttempts: 3,
      minTimeoutInMs: 1000,
      maxTimeoutInMs: 10000,
      factor: 2,
      randomize: true,
    },
  },
  //The paths for your trigger folders
  triggerDirectories: ["./trigger"],
};
Most of the time you don’t need to change anything in this file, or if you do then we will tell you when you the run the CLI command.

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Instrumentations

We use OpenTelemetry (OTEL) for our run logs. This means you get a lot of information about your tasks with no effort. But you probably want to add more information to your logs. For example, here’s all the Prisma calls automatically logged: The run log Here we add Prisma and OpenAI instrumentations to your trigger.config.ts file.
trigger.config.ts
import type { TriggerConfig } from "@trigger.dev/sdk/v3";
import { PrismaInstrumentation } from "@prisma/instrumentation";
import { OpenAIInstrumentation } from "@traceloop/instrumentation-openai";

export const config: TriggerConfig = {
  //..other stuff
  instrumentations: [new PrismaInstrumentation(), new OpenAIInstrumentation()],
};

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ESM-only packages

We’ll let you know when run the CLI dev command if this is a problem. Some packages are ESM-only so they don’t work directly from CJS when using Node.js. In that case you need to add them to the dependenciesToBundle array in your trigger.config.ts file.
trigger.config.ts
import type { TriggerConfig } from "@trigger.dev/sdk/v3";

export const config: TriggerConfig = {
  //..other stuff
  //either regex or strings of package names
  dependenciesToBundle: [/@sindresorhus/, "escape-string-regexp"],
};

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Prisma (and other generators)

Prisma works by generating a client from your prisma.schema file. This means you need to do a couple of things to get it to work with Trigger:
1

package.json postinstall `prisma generate`

{
  "scripts": {
    "postinstall": "prisma generate"
  }
}
Anything you put in postinstall will be run as part of the install step. This is how Next.js recommends you set up Prisma anyway.
2

Add prisma and the schema to trigger.config.ts

trigger.config.ts
import type { TriggerConfig } from "@trigger.dev/sdk/v3";

export const config: TriggerConfig = {
  //..other stuff
  additionalFiles: ["./prisma/schema.prisma"],
  additionalPackages: ["prisma@5.11.0"],
};
This tells Trigger to bundle the Prisma client and the schema file.

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Troubleshooting

If you have an issue with bundling let us know on Discord or via email.