Unable to initiate TypeScript program in Visual Studio Code: "The program 'hw.ts' cannot be launched as the corresponding JavaScript file is missing."

In my file named hw.ts, the code is as follows:

function greeter(x: string) {
    return "Hello" + x;
}

let u = "John";
document.body.innerHTML = greeter(u);

When I try to run it using Start without debugging in VSCode, I get an error message:

Cannot launch program 'hw.ts' because corresponding JavaScript cannot be found.

To fix this, I compiled the file from the command line:

tsc hw.ts

Now that I have the hw.js in the same folder, I tried running it again with Start without debugging but got the same error message. Is there a way to compile and run TypeScript programs directly from within VSCode? What am I missing?

(My PATH includes node so it should be accessible to VSCode)

Answer №1

Finally got it to work after making a simple adjustment

  "outFiles": [
    "./dist/**/*.js"
  ],

update the path like this:

  "outFiles": [
    "${workspaceFolder}/dist/**/*.js"
  ],

Answer №2

Make sure you double-check the pathway to your *.js data in the launch.json. You can achieve this by explicitly stating the outFiles selection. Additionally, to activate debugging for *.ts files, ensure that sourceMaps is set to true. By doing this, VSCode will attempt to link the compiled *.js documents to their corresponding *.ts versions.
Let's look at an example:

"sourceMaps": true,
"outFiles": [
    "${workspaceFolder}/path/to/your/jsFiles/**/*.js"
] 

Answer №3

Make the following change in your launch.json configuration file:

"outFiles": ["${workspaceFolder}/**/*.js"]

Replace it with:

"outFiles": ["${fileDirname}/**/*.js"]

This adjustment resolved the issue for me.

Answer №4

I encountered a similar problem and managed to resolve it by following these steps:

1. Adjust Settings

Define the output directory and activate sourceMap in your tsconfig.json file:

"outDir": "./out",  /* Specify .js output files. */
"sourceMap": true   /* Generate corresponding .map files. */

2. Execute Build Task

To compile, run the build task (Shift + Command(Ctrl) + B) from the VS Code Terminal menu. Enter the following command:

tsc: watch - tsconfig.json

You must perform this step once upon opening the project to track code changes.

3. Run Application

Navigate to your TypeScript program (ensure that your program file .ts is selected).

In the Run menu, choose Run Without Debugging (Ctrl + F5).

The output will be displayed in the Debug Console.

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

Issue with redirecting to another link in Angular routing

After numerous attempts, I finally managed to configure the adviceRouterModule correctly. Despite extensive research and Google searches, I couldn't quite crack it. Here is the configuration for my AdviceRoutingModule: const adviceRouters: Routes = ...

JavaScript program failing to execute

Seeking to incorporate a read more and read less feature that activates on click for my articles application using Django. However, encountering an issue where my JavaScript code does not work when the read more link is clicked. Below are the relevant fil ...

Unable to adjust the dimensions of the image

I recently added two images to my website successfully, but I am facing an issue when attempting to modify their dimensions and shape using CSS. Despite adjusting the height, width, border-radius, etc., the images remain unchanged. Can anyone provide insig ...

The magical unveiling of words through the art of animation

After spending considerable time learning how to code, I find myself seeking assistance in creating a specific animation. For the past two days, I've been struggling to bring my vision to life (see attached image). Unfortunately, my current knowledge ...

Is there a similar function in PHP to creating an array with a specified number of elements in JavaScript using "new Array(number)"?

While attempting to convert a basic Javascript function into PHP, I encountered a variable declared as var Variable = new Array (13). In PHP, variables are typically declared like this: $variable = array() But what does the "13" in new Array(13) signify? ...

Updating website content dynamically using Javascript and JSON-encoded data

My programming code seems to be acting oddly. I have structured my data in a JSON object as follows: injectJson = { "title": "Champion Challenge Questions", "rules": [ { "idChrono": "chrono-minute", "text": "Top is missing!", ...

Navigating a local and server environment with relative paths in a web server's multiple sites

My ASP.NET website is published to a web server with multiple sites, such as www.example.com/SiteA or www.example.com/SiteB. Before publishing, I test the site locally at localhost:12345. When referencing an image path like /Images/exampleImage.gif, it wo ...

Retrieve all entries using Sequelize ORM in a One-To-Many relationship situation

In my database, I have two tables named Users and Shops. Users can own multiple shops, while each shop is owned by only one user. The technology stack I am using includes Node.js with the Sequelize ORM for PostgreSQL databases. Encountered Issue When ret ...

Using PHP to perform live calculations with arrays in real time

Currently, I am working on developing a new system for a client that allows them to create bookings and invoices to send to their clients. One specific requirement my client has is the need for a table column to be added below the container columns in whi ...

Encountering a hydration issue with an SVG element embedded within a Link component in Next

I'm encountering a hydration error related to an icon within a link, Here is the error message: Error: Hydration failed because the initial UI does not match what was rendered on the server. Warning: Expected server HTML to contain a matching <svg ...

What issues are present in the Ajax script and the PHP radio input?

I'm having trouble extracting the value of a radio input in this code so I can update the database: <script type="text/javascript> function getVote() { if (window.XMLHttpRequest) { // code for IE7+, Firefox, Chrome, Opera, Safari xmlh ...

Error: The value of data.isbn is not defined

After encountering the error message below: TypeError: data.isbn is undefined I modified the code to include the data.isbn == null condition as shown below: $.ajax({ type: "POST", url: "getInventory.php", datatype: "json", data: ({skuSta ...

Issue with v-model not connecting to app.js in Laravel and Vue.js framework

Snippet from app.js const app = new Vue({ el: '#app', router, data:{ banana:'' } }); Code found in master.blade.php <div class="wrapper" id="app"> <router-view></router-view> //using Vue ...

Challenge with the scope of 'this' in Typescript

Whenever I invoke the findFromList function from a component, it triggers this particular error message: ERROR TypeError: Cannot read property 'searchInArray' of undefined at push../src/app/shared/services/filter.service.ts.FilterService ...

Learn the steps to modify or remove table information from a database using a webpage

Hey there! I'm currently working on an Ajax jQuery function that displays table data, like in the image provided. I would like to add an option for users to edit and delete the table data, with the changes reflecting in the database. It's worth n ...

How can I save every attribute of an object, including functions, to a JSON file?

How can I save a Json file with both data and functions included? I have tried using JSONfn, but it doesn't preserve the functions for me. I attempted the following code, but it didn't achieve the desired outcome: fs.writeFile("object.json", ...

Can someone explain the function of statements such as (function () { // code; }.call(this)); within a JavaScript module?

By utilizing the Function.prototype.call() method, it becomes possible to create a function that can be applied to various objects. I delved into the code of , which had been minified and required to be un-minified for examination. The structure of the co ...

What is the best way to sift through an array containing arrays?

Looking for help with filtering and pushing data from a JSON array? Specifically, I need to filter arrays where the data's attrs property includes a src attribute. It's proving challenging for me, so any assistance would be greatly appreciated. ...

Access Select without needing to click on the child component

I am curious to learn how to open a Select from blueprint without relying on the click method of the child component used for rendering the select. <UserSelect items={allUsers} popoverProps={{ minimal: false }} noResults={<MenuItem disabled={ ...

Apollo useQuery enables risky array destructuring of a tuple element containing any value

Currently, I am incorporating TypeScript into my project and have a GraphQL query definition that utilizes Apollo's useQuery. According to the documentation, the call should be typed, however, I am encountering an ESLint error regarding data being ass ...