npx nestjs-modules

    NodemailerModule.forRootAsync({
      from: configInstance.email.from,
      host: configInstance.email.host,
      port: configInstance.email.port,
      auth: {
        user: configInstance.email.auth.user,
        pass: configInstance.email.auth.pass,
      },

      templatesPath: path.join(__dirname, '..', 'email-templates'),
      renderStrategy: new EjsStrategy(),
      useTestAccount: configInstance.email.testMode,
    }),

import * as ejs from 'ejs';
import { RenderStrategyInterface } from '../interfaces';

export class EjsStrategy implements RenderStrategyInterface {
  async render(templatePath: string, context?: any): Promise<string> {
    return ejs.renderFile(templatePath, { context });
  }
}

import * as path from 'path';
import { Injectable, Inject } from '@nestjs/common';
import { SentMessageInfo, Transporter, SendMailOptions, getTestMessageUrl } from 'nodemailer';
import { NODEMAILER_OPTIONS, NODEMAILER_TRANSPORT } from './constants';
import { NodemailerAsyncOptions } from './interfaces';

@Injectable()
export class NodemailerService {
  private lastEmail: SendMailOptions = null;

  constructor(
    @Inject(NODEMAILER_OPTIONS)
    private readonly options: NodemailerAsyncOptions,
    @Inject(NODEMAILER_TRANSPORT) private readonly nodemailer: Transporter,
  ) {}

  getLastEmail() {
    return this.lastEmail;
  }

  getTestMessageUrl(info: SentMessageInfo) {
    return getTestMessageUrl(info);
  }

  async send(options: {
    templateName: string;
    to: string;
    context?: any;
    subject?: string;
  }): Promise<SentMessageInfo> {
    const templatePath = path.join(
      this.options.templatesPath,
      options.templateName,
    );

    const email = await this.options.renderStrategy.render(
      templatePath,
      options.context,
    );

    const emailOptions: SendMailOptions = {
      to: options.to,
      html: email,
      subject: options.subject,
    };
    // Store last email for E2E tests
    this.lastEmail = emailOptions;

    return this.nodemailer.sendMail(emailOptions);
  }
}

    NodemailerModule.forRootAsync({
      from: configInstance.email.from,
      host: configInstance.email.host,
      port: configInstance.email.port,
      auth: {
        user: configInstance.email.auth.user,
        pass: configInstance.email.auth.pass,
      },

      templatesPath: path.join(__dirname, '..', 'email-templates'),
      renderStrategy: new EjsStrategy(),
      useTestAccount: configInstance.email.testMode,
    }),