Is it possible to write TypeScript and execute it directly with Node?

I am attempting to write some basic typescripts but I am encountering an issue with the setup below:

node src/getExchangeAndTickerList.ts

import * as mkdirp from 'mkdirp';
^^^^^^

SyntaxError: Cannot use import statement outside a module
    at wrapSafe (internal/modules/cjs/loader.js:1047:16)
    at Module._compile (internal/modules/cjs/loader.js:1097:27)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1153:10)
    at Module.load (internal/modules/cjs/loader.js:977:32)
    at Function.Module._load (internal/modules/cjs/loader.js:877:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:74:12)
    at internal/main/run_main_module.js:18:47
{
  "compilerOptions": {
    "module": "commonjs",
      "target": "ES2018",
      "moduleResolution": "node",
      "baseUrl": ".",
      "paths": {
          "*": [ "./*" ],
      },
      "types": ["node"]
  },    
  "include": [
      "./src/**/*.ts",
  ],
  "exclude": [
    "./node_modules"
  ]
}

Answer №1

By default, Vanilla node can only interpret and execute Javascript code. If you need to work with Typescript code, there are a couple of solutions available:

  • One option is to utilize a tool like ts-node that registers .ts files.
  • Another approach is to transpile your Typescript code by running the tsc command, which will convert your code into Javascript files.

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Utilizing ES6 JavaScript for Creating Static Methods and Angular 2 Services

During the development of an Angular 2 app involving multiple calculation services, I encountered some interesting questions: Is it beneficial to use static in an Angular service provided on the application level? Or is it unnecessary? How does a static ...

Is the input URL modified by the Angular HttpClientModule's GET request?

I am currently using an Angular service to make calls to a Node.js server in order to fetch data. Here is a snippet of my code: constructor(private http: HttpClient){ } getPersonData(): Observable<person[]> { //return this.http.get<person ...

"Transferring a C# dictionary into a TypeScript Map: A step-by-step

What is the correct way to pass a C# dictionary into a TypeScript Map? [HttpGet("reportsUsage")] public IActionResult GetReportsUsage() { //var reportsUsage = _statService.GetReportsUsage(); IDictionary<int, int> te ...

What is the best way to access a private class variable within the sockent.on function in Angular?

export class AppComponent { title = 'my-app'; constructor(private notifyService : NotificationService) {} ngOnInit() { socket.on("laravel_database_chat:test", function(message){ //I AM ATTEMPTING TO INVOKE THE NOTIF ...

Incompatibility issues between NestJS and socket.io package

After diligently following the documentation, I attempted to install and work with socket.io on nestjs. However, I encountered multiple issues when installing packages. Despite trying different methods to update the package, nothing seemed to resolve the i ...

Anticipated outcome is the need to provide a value upon completion of arrow function recursion (consistent-return)

If I have a recursive function like the example provided, is it possible to simply return false after the recursive foo call? function foo(fn, redo, interval = 1000) { return new Promise( (resolve, reject) => { fn() .then(resolve) ...

Troubleshooting the Issue with Angular Material Dialog Imports

Hey there, I'm trying to utilize the Angular Material dialog, but I'm encountering issues with the imports and I can't seem to figure out what's wrong. I have an Angular Material module where I imported MatDialog, and I made sure to i ...

Receiving error in TypeScript while using the 'required' attribute in the input field: "Cannot assign type 'string | undefined' to parameter expecting type 'string'"

In my TypeScript code, I am currently in the process of transitioning from utilizing useState to useRef for capturing text input values. This change is recommended when no additional manipulation necessitating state or rerenders is required. While I have ...

How can parameters be implemented in Angular similar to NodeJs Express style?

Is there a way to implement a Parameter in Angular routes that resembles the NodeJs style? I have a route like **http://myhost.domain.com/signin**" and I want to pass an id for the signin request. Although I can achieve this using **http://myhost.doma ...

Exploring Angular 7: Leveraging class inheritance and the powerful httpClient

It has come to my attention that my services are quite repetitive. In an attempt to enhance them, I decided to delve into super classes and inheritance in Angular. However, I have been struggling with the constructor and super calls. Despite TypeScript com ...

Retrieve the object from the data received from the HTTP GET API call

I have a question that has been asked before, but I am unable to achieve the desired result with my current approach. When my service retrieves data from an API, it returns results in the following format: { "nhits": 581, "paramete ...

Generating auto UUIDs in PostgreSQL using TypeORM

Currently, I am in the process of developing a REST API and utilizing TypeORM for data access. While I have been able to use it successfully so far, I am facing an issue regarding setting up a UUID auto-generated primary key on one of my tables. If anyone ...

Issues with TypeScript Optional Parameters functionality

I am struggling with a situation involving the SampleData class and its default property prop2. class SampleData { prop1: string; prop2: {} = {}; } export default SampleData; Every time I attempt to create a new instance of SampleData without sp ...

String Compression - Number of Elements

Suppose I define a specific type: type SomeType = 'a' | 'b' | 'c' Is there a TypeScript function available that can calculate the number of unique values a variable of type SomeType can hold? assertEq(countUniqueValues(SomeTy ...

Find out whether the page was reloaded or accessed directly through a hyperlink

I need to find out if the page was accessed directly via a link. If it was, I need to perform a certain action. However, my current implementation is not working as intended, as even a page refresh triggers this action. Is there an alternative method to ch ...

Ensuring data integrity by validating incoming data with TypeScript and Angular 2

What is the best approach to validate data received from the server using AJAX or in a child component using the @input decorator in Angular2+ applications? In my current project, I utilize interfaces for this purpose, however they do not entirely valida ...

Enhancing Angular2 authentication with Auth0 for enabling Cross-Origin Resource Sharing

I have been working on implementing user authentication through Auth0. I followed the instructions provided on their website, but I am encountering authentication issues. Whenever I try to authenticate, an error message appears in the console stating that ...

Executing the Angular 2 foreach loop before the array is modified by another function

Currently, I am facing some difficulties with an array that requires alteration and re-use within a foreach loop. Below is a snippet of the code: this.selectedDepartementen.forEach(element => { this.DepID = element.ID; if (this.USERSDepIDs. ...

Neither Output nor EventEmitter are transmitting data

I am struggling to pass data from my child component to my parent component using the Output() and EventEmitter methods. Despite the fact that the emitter function in the child component is being called, it seems like no data is actually being sent through ...

"Pairing AngularJS 2 with Vaadin for a winning combination

Good day, I'm currently following a tutorial but encountering some challenges with integrating Vaadin and Angularjs2 into my Joomla Backend project. The error message I am facing is as follows: polymer-micro.html:196 Uncaught TypeError: Cannot read ...