Can't properly use custom Provider

[matiasgarcia]

I am trying to plug-in DataDog, so I did the following:

DataDogProvider.ts

import { ApplicationContract } from '@ioc:Adonis/Core/Application'
import DataDogTracer from 'dd-trace'

export default class DataDogProvider {
  public static needsApplication = true

  constructor(protected app: ApplicationContract) {}

  // Register your own bindings
  public async register(): Promise<void> {
    this.app.container.singleton('Adonis/Addons/DataDog', () => {
      return { ...DataDogTracer }
    })
  }

  // IoC container is ready
  public async boot(): Promise<void> {
    // TODO: Make this configurable? See https://github.com/reg2005/adonis5-sentry/blob/master/providers/SentryProvider.ts#L17
    const tracer = DataDogTracer.init()
    tracer.use('pg', { enabled: true })
  }

  public async ready() {
    // App is ready
  }

  public async shutdown() {
    // Cleanup, since app is going down
  }
}

.adonisrc.json

  "providers": [
    "./providers/AppProvider",
    "@adonisjs/core",
    "@adonisjs/lucid",
    "./providers/DataDogProvider"
  ],

dataDogAdonis.d.ts

declare module '@ioc:Adonis/Addons/DataDog' {
  import DataDogTracer, { Span } from 'dd-trace'
  export { DataDogTracer }
}

Middleware DataDogTrace.ts

import type { HttpContextContract } from '@ioc:Adonis/Core/HttpContext'
import { DataDogTracer } from '@ioc:Adonis/Addons/DataDog'

export default class DataDogTrace {
  public async handle(ctx: HttpContextContract, next: () => Promise<void>) {
    return await DataDogTracer.trace('web.request', async (span) => {
      const request = ctx.request
      span?.addTags({
        body: request.body(),
        params: request.params(),
        route: request.request.url,
        method: request.method(),
      })
      Object.assign(ctx, { span })
      await next()
    })
  }
}

The error is in the line return await DataDogTracer.trace('web.request', async (span) => { since DataDogTracer is undefined. What should I do?

{
"message": "Cannot read properties of undefined (reading 'trace')",
"stack": "TypeError: Cannot read properties of undefined (reading 'trace')\n    at DataDogTrace.handle (/home/mgarcia/projects/compliance-backend-api/app/Middleware/DataDogTrace.ts:6:32)\n    at Injector.callAsync (/home/mgarcia/projects/compliance-backend-api/node_modules/@adonisjs/fold/build/src/Ioc/Injector.js:124:30)\n    at processTicksAndRejections (node:internal/process/task_queues:96:5)"
}