Nestjs

This guide explains how to set up Sentry in your Nest.js application.

If you don't already have an account and a Sentry project established, sign up for Sentry for free, then return to this page.

Install

In addition to capturing errors, you can monitor interactions between multiple services or applications by enabling tracing. You can also collect and analyze performance profiles from real users with profiling.

Select which Sentry features you'd like to install in addition to Error Monitoring to get the corresponding installation and configuration instructions below.

Sentry captures data by using an SDK within your application’s runtime.

npm install @sentry/nestjs --save

npm install @sentry/nestjs @sentry/profiling-node --save

Configure

Sentry should be initialized in your app as early as possible. It's essential that you call Sentry.init before you require any other modules in your application, otherwise, auto-instrumentation won't work for these modules.

Once this is done, Sentry's Node SDK will capture unhandled exceptions as well as tracing data for your application.

To import and initialize Sentry, you'll need to create a file named instrument.js:

const Sentry = require("@sentry/nestjs");
const { nodeProfilingIntegration } = require("@sentry/profiling-node");

// Ensure to call this before requiring any other modules!
Sentry.init({
  dsn: "https://examplePublicKey@o0.ingest.sentry.io/0",
  integrations: [
    // Add our Profiling integration
    nodeProfilingIntegration(),
  ],

  // Add Tracing by setting tracesSampleRate
  // We recommend adjusting this value in production
  tracesSampleRate: 1.0,

  // Set sampling rate for profiling
  // This is relative to tracesSampleRate
  profilesSampleRate: 1.0,
});

Use

To ensure that Sentry can automatically instrument all modules in your application, you'll need to require or import the instrument.js file before requiring any other modules in your application:

// Import this first!
import "./instrument";

// Now import other modules
import { NestFactory } from "@nestjs/core";
import { AppModule } from "./app.module";

async function bootstrap() {
  const app = await NestFactory.create(AppModule);
  await app.listen(3000);
}

bootstrap();

Afterwards, add the SentryModule as a root module to your main module:

import { Module } from "@nestjs/common";
import { SentryModule } from "@sentry/nestjs/setup";
import { AppController } from "./app.controller";
import { AppService } from "./app.service";

@Module({
  imports: [
    SentryModule.forRoot(),
    // ...other modules
  ],
  controllers: [AppController],
  providers: [AppService],
})
export class AppModule {}

In case you are using a global catch-all exception filter (which is either a filter registered with app.useGlobalFilters() or a filter registered in your app module providers annotated with a @Catch() decorator without arguments), add a @WithSentry() decorator to the catch() method of this global error filter. This decorator will report all unexpected errors that are received by your global error filter to Sentry:

import { Catch, ExceptionFilter } from '@nestjs/common';
import { WithSentry } from '@sentry/nestjs';

@Catch()
export class YourCatchAllExceptionFilter implements ExceptionFilter {
  @WithSentry()
  catch(exception, host): void {
    // your implementation here
  }
}

In case you do not have a global catch-all exception filter, add the SentryGlobalFilter to the providers of your main module. This filter will report all unhandled errors to Sentry that are not caught by any other error filter. Important: The SentryGlobalFilter needs to be registered before any other exception filters.

import { Module } from "@nestjs/common";
import { APP_FILTER } from "@nestjs/core";
import { SentryGlobalFilter } from "@sentry/nestjs/setup";

@Module({
  providers: [
    {
      provide: APP_FILTER,
      useClass: SentryGlobalFilter,
    },
    // ..other providers
  ],
})
export class AppModule {}

Note: In NestJS + GraphQL applications replace the SentryGlobalFilter with the SentryGlobalGraphQLFilter.

By default, exceptions with status code 4xx are not sent to Sentry. If you still want to capture these exceptions, you can do so manually with Sentry.captureException():

import { ArgumentsHost, BadRequestException, Catch } from '@nestjs/common';
import { BaseExceptionFilter } from '@nestjs/core';
import { ExampleException } from './example.exception';
import * as Sentry from '@sentry/nestjs';

@Catch(ExampleException)
export class ExampleExceptionFilter extends BaseExceptionFilter {
  catch(exception: unknown, host: ArgumentsHost) {
    Sentry.captureException(exception);
    return super.catch(new BadRequestException(exception.message), host)
  }
}

Add Readable Stack Traces to Errors

Depending on how you've set up your project, the stack traces in your Sentry errors probably won't look like your actual code.

To fix this, upload your source maps to Sentry. The easiest way to do this is by using the Sentry Wizard:

npx @sentry/wizard@latest -i sourcemaps

The wizard will guide you through the following steps:

• Logging into Sentry and selecting a project
• Installing the necessary Sentry packages
• Configuring your build tool to generate and upload source maps
• Configuring your CI to upload source maps

For more information on source maps or for more options to upload them, head over to our Source Maps documentation.

Verify

This snippet includes an intentional error, so you can test to make sure that everything is working as soon as you set it up.

@Get("/debug-sentry")
getError() {
  throw new Error("My first Sentry error!");
}

To view and resolve the recorded error, log into sentry.io and open your project. Clicking on the error's title will open a page where you can see detailed information and mark it as resolved.