Nest js packaging hangs at build process of the serverless framework - nestjs

Question

So i did a fresh install of nestjs application and i am trying to add the serverless framework with it.I also added few of the packages to support the serverless framework
{
"name": "n1",
"version": "0.0.1",
"description": "",
"author": "",
"private": true,
"license": "UNLICENSED",
"scripts": {
"prebuild": "rimraf dist",
"build": "nest build",
"format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
"start": "nest start",
"start:dev": "nest start --watch",
"start:debug": "nest start --debug --watch",
"start:prod": "node dist/main",
"lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
"test": "jest",
"test:watch": "jest --watch",
"test:cov": "jest --coverage",
"test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
"test:e2e": "jest --config ./test/jest-e2e.json"
},
"dependencies": {
"#hewmen/serverless-plugin-typescript": "^1.1.17",
"#nestjs/common": "^7.0.0",
"#nestjs/core": "^7.0.0",
"#nestjs/platform-express": "^7.0.0",
"aws-lambda": "^1.0.6",
"aws-serverless-express": "^3.3.8",
"express": "^4.17.1",
"reflect-metadata": "^0.1.13",
"rimraf": "^3.0.2",
"rxjs": "^6.5.4",
"serverless-offline": "^6.5.0",
"serverless-plugin-optimize": "^4.1.4-rc.1"
},
"devDependencies": {
"#nestjs/cli": "^7.0.0",
"#nestjs/schematics": "^7.0.0",
"#nestjs/testing": "^7.0.0",
"#types/express": "^4.17.3",
"#types/jest": "25.2.3",
"#types/node": "^13.9.1",
"#types/supertest": "^2.0.8",
"#typescript-eslint/eslint-plugin": "3.0.2",
"#typescript-eslint/parser": "3.0.2",
"eslint": "7.1.0",
"eslint-config-prettier": "^6.10.0",
"eslint-plugin-import": "^2.20.1",
"jest": "26.0.1",
"prettier": "^1.19.1",
"supertest": "^4.0.2",
"ts-jest": "26.1.0",
"ts-loader": "^6.2.1",
"ts-node": "^8.6.2",
"tsconfig-paths": "^3.9.0",
"typescript": "^3.7.4"
},
"jest": {
"moduleFileExtensions": [
"js",
"json",
"ts"
],
"rootDir": "src",
"testRegex": ".spec.ts$",
"transform": {
"^.+\\.(t|j)s$": "ts-jest"
},
"coverageDirectory": "../coverage",
"testEnvironment": "node"
}
}
and i have also added the serverless.yml file which is pointing in to lambda.handler
serverless.yml file
service:
name: nest-serverless-framework
plugins:
- '#hewmen/serverless-plugin-typescript'
- serverless-plugin-optimize
- serverless-offline
provider:
name: aws
runtime: nodejs12.x
functions:
main:
handler: src/lambda.handler
events:
- http:
method: any
path: /{any+}
So the handler file is simple it just exported a module that can bootstrap the application
import { Handler, Context } from 'aws-lambda';
import { Server } from 'http';
import { createServer, proxy } from 'aws-serverless-express';
import { eventContext } from 'aws-serverless-express/middleware';
import { NestFactory } from '#nestjs/core';
import { ExpressAdapter } from '#nestjs/platform-express';
import { AppModule } from './app.module';
import express from 'express';
const binaryMimeTypes: string[] = [];
let cachedServer: Server;
// Create the Nest.js server and convert it into an Express.js server
async function bootstrapServer(): Promise<Server> {
if (!cachedServer) {
const expressApp = express();
const nestApp = await NestFactory.create(AppModule, new
ExpressAdapter(expressApp))
nestApp.use(eventContext());
await nestApp.init();
cachedServer = createServer(expressApp, undefined,
binaryMimeTypes);
}
return cachedServer;
}
// Export the handler : the entry point of the Lambda function
export const handler: Handler = async (event: any, context: Context) => {
cachedServer = await bootstrapServer();
return proxy(cachedServer, event, context, 'PROMISE').promise;
}
but when i now try to do sls offline start, the computer just hangs and nothing happen and i have to restart the computer forcefully.
Any help would be appreciated.

Answer 1

I had a similar issue with v8 crashing during the serverless build. Changing packages from #hewmen/serverless-plugin-typescript to the original serverless-plugin-typescript fixed it.

Answer 2

Please note that aws-serverless-express says:
On 11/30 [2022], the AWS Serverless Express library is moving to Vendia and will be rebranded to serverless-express [...]
has become obsolete.
Probably the same job, you wanted to achieve, does the following Vendina example:
vendia serveless basic-starter-nestjs