Skip to main content

Typescript not bundling modules

I have a node application that compiles typescript files to a dist folder and then serves these files as lambda resolvers via aws cdk. Here is an example of my setup:

The code

register.ts

import ValidateUserFields from '../utils/forms';

exports.main = async function (event: any, context: any) {
    return {
      statusCode: 200,
    };
}

register-lambda-config.ts

import { Construct } from 'constructs';
import * as apigateway from 'aws-cdk-lib/aws-apigateway';
import * as lambda from 'aws-cdk-lib/aws-lambda';
import * as s3 from 'aws-cdk-lib/aws-s3';

export class FrontendService extends Construct {
  constructor(scope: Construct, id: string) {
    super(scope, id);

    const api = new apigateway.RestApi(this, 'frontend-api', {
      restApiName: 'Frontend Service',
      description: 'This service serves the frontend.',
    });

    const functionName = 'register';

    const handler = new lambda.Function(this, functionName, {
      functionName,
      runtime: lambda.Runtime.NODEJS_14_X,
      code: lambda.Code.fromAsset('dist/src/lambda'),
      handler: 'register.main',
    });

    const registerIntegration = new apigateway.LambdaIntegration(handler, {
      requestTemplates: { 'application/json': '{ "statusCode": "200" }' },
    });

    const registerResource = api.root.addResource('register');
    registerResource.addMethod('POST', registerIntegration);
  }
}

tsconfig.json

{
  "compilerOptions": {
    "target": "ES2018",
    "module": "commonjs",
    "moduleResolution": "node",
    "lib": ["es2018"],
    "declaration": true,
    "strict": true,
    "noImplicitAny": false,
    "strictNullChecks": true,
    "noImplicitThis": true,
    "alwaysStrict": true,
    "esModuleInterop": true,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": false,
    "inlineSourceMap": true,
    "inlineSources": true,
    "experimentalDecorators": true,
    "strictPropertyInitialization": false,
    "outDir": "dist",
    "typeRoots": ["./node_modules/@types"]
  },
  "exclude": ["node_modules", "cdk.out", "./dist/**/*"]
}

And finally here is the script part of my package.json file:

  "scripts": {
    "build": "tsc",
    "watch": "tsc -w",
    "cdk": "cdk",
    "bootstrap": "cdk bootstrap",
    "deploy": "cdk deploy && rimraf cdk.out",
    "destroy": "cdk destroy",
    "run-same-local-fe-api": "sam local start-api -p 4000 -t ./template.yaml",
    "dev": "npm run build && npm run synth && concurrently --kill-others \"npm run watch\" \"npm run run-same-local-fe-api\"",
    "synth": "cdk synth --no-staging > template.yaml"
  },

The problem

When I run npm run dev it compiles my typescript files to the dist folder in the same structure as what I have in my src folder (where all my typescript files live). I however run into the following error if I have any imports in my register.ts file:

{"errorType":"Runtime.ImportModuleError","errorMessage":"Error: Cannot find module '../utils/forms'\nRequire stack:\n- /var/task/register.js\n- /var/runtime/UserFunction.js\n- /var/runtime/index.js","stack":["Runtime.ImportModuleError: Error: Cannot find module '../utils/forms'","Require stack:","- /var/task/register.js","- /var/runtime/UserFunction.js","- /var/runtime/index.js"," at _loadUserApp (/var/runtime/UserFunction.js:202:13)"," at Object.module.exports.load (/var/runtime/UserFunction.js:242:17)","
at Object. (/var/runtime/index.js:43:30)"," at Module._compile (internal/modules/cjs/loader.js:1085:14)"," at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)"," at Module.load (internal/modules/cjs/loader.js:950:32)"," at Function.Module._load (internal/modules/cjs/loader.js:790:12)"," at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:75:12)"," at internal/main/run_main_module.js:17:47"]}

This happens for imports from relative local files (like '../utils/forms' as shown in the code above) but also for imports from node_modules. When I look into the compiled register.js file in the dist folder I see that it has made an attempt to parse the import:

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const forms_1 = __importDefault(require("../utils/forms"));
const bucketName = process.env.BUCKET;

exports.main = async function (event, context) { ...

however it shows the error message above. I have tried using require instead of import but it was the same result...

Any help would be greatly appreciate! Thanks

Via Active questions tagged javascript - Stack Overflow https://ift.tt/FUSptel

Labels

Labels:

Comments

Post a Comment

Popular posts from this blog

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype
Post a Comment
Read more

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...
Post a Comment
Read more

ValueError: X has 10 features, but LinearRegression is expecting 1 features as input

So, I am trying to predict the model but its throwing error like it has 10 features but it expacts only 1. So I am confused can anyone help me with it? more importantly its not working for me when my friend runs it. It works perfectly fine dose anyone know the reason about it? cv = KFold(n_splits = 10) all_loss = [] for i in range(9): # 1st for loop over polynomial orders poly_order = i X_train = make_polynomial(x, poly_order) loss_at_order = [] # initiate a set to collect loss for CV for train_index, test_index in cv.split(X_train): print('TRAIN:', train_index, 'TEST:', test_index) X_train_cv, X_test_cv = X_train[train_index], X_test[test_index] t_train_cv, t_test_cv = t[train_index], t[test_index] reg.fit(X_train_cv, t_train_cv) loss_at_order.append(np.mean((t_test_cv - reg.predict(X_test_cv))**2)) # collect loss at fold all_loss.append(np.mean(loss_at_order)) # collect loss at order plt.plot(np.log(al...
Post a Comment
Read more