What is the best approach for debugging an Angular 2 Typescript application using Visual Studio Code or other developer tools?
What is the best approach for debugging an Angular 2 Typescript application using Visual Studio Code or other developer tools?
Arriving fashionably late to the party, but sharing some insights that may benefit others. This solution is tailored for those working with angular2 and angular4 in Visual Studio Code.
Start by installing the Debugger for Chrome extension. https://i.sstatic.net/yDADu.png
Once installed, a new folder named '.vscode' will appear in your project directory, containing the 'launch.json' file. https://i.sstatic.net/2O1Rp.png
Open and modify the 'launch.json' file as shown below. Note that port 4200 is default for 'ng serve', adjust accordingly if needed.
{
"version": "0.2.0",
"configurations": [
{
"type": "chrome",
"request": "launch",
"name": "Launch Chrome against localhost",
"url": "http://localhost:4200",
"webRoot": "${workspaceRoot}",
"sourceMaps": true
},
{
"type": "chrome",
"request": "attach",
"name": "Attach to Chrome",
"port": 9222,
"webRoot": "${workspaceRoot}",
"sourceMaps": true
}
]
}
https://i.sstatic.net/EbNP2.png
Get ready for some HAPPY CODING! :-)
One key aspect to focus on at this stage is the utilization of source maps. These maps enable you to establish a connection between your TypeScript source code and the transpiled JavaScript version.
Within your tsconfig.json file, it is crucial to ensure that the sourceMap option is configured as true:
{
"compilerOptions": {
"target": "es5",
"module": "commonjs",
"moduleResolution": "node",
"sourceMap": true, // <-----
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"removeComments": false,
"noImplicitAny": false
}
}
By doing so, you will have the ability to visualize your TypeScript files within the Sources tab of DevTools and insert breakpoints where necessary.
You may also find the following article insightful:
One efficient way to debug TypeScript files is by placing breakpoints directly within your browser interface.
While initiating the bootstrap process for my Angular hybrid app (which combines Angular 7 and AngularJS), I am aiming to utilize a separate config JSON file by storing it as a window variable. Currently, I have the following setup: setAngularLib(AngularJ ...
In my NextJS project, we utilize the /api path to implement our API, with an openapi.yaml file defining the interface. To generate the API client successfully, we run the following command: openapi-generator-cli generate -i data/api/openapi.yaml -o src/api ...
After upgrading my project to TypeScript 4.4.3 from 3.9.9, I encountered a change in the type declarations for the top property. My project utilizes "strictNullChecks": true, in its configuration file tsconfig.json, and is browser-based rather t ...
I'm facing an issue with displaying a very large text in a table. Despite trying various attributes such as - { text-overflow: clip; } { text-overflow: ellipsis; } { text-overflow: ellipsis-word; } { text-overflow: "---"; } { text-overflow: ellip ...
After extensively researching and following online tutorials on in-app purchases, I successfully completed the setup on Apple's platform and am now testing the functionality. Everything seems to be working fine, but I'm facing two issues that I n ...
Is there a way to ensure the proper initialization order of class fields in TypeScript (4.0) constructors? In this example (run), this.x is accessed in the method initY before it's initialized in the constructor: class A { readonly x: number rea ...
Essentially, I have an API request within the useEffect() hook to fetch all "notebooks" before the page renders, allowing me to display them. useEffect(() => { getIdToken().then((idToken) => { const data = getAllNotebooks(idToken); ...
I am new to using Next.js and TypeScript, and I would like to refactor my code to improve data fetching speed. Currently, I have a file called dashboard.tsx with the following code: import Layout from "@/layouts/layout"; import React, { useC ...
I have developed a grocery list application where each row contains the name of a food item. The layout includes a left column for items that are not needed and a right column for items that are needed. Currently, I am able to change the state by clicking ...
Can anyone clarify TypeScript behavior in this scenario? JavaScript const test1 = [ ['a', 'b'], ['c', 'd'], ]; const test2 = [ ...[ ['a', 'b'], ['c', ' ...
Hey there, I'm currently working on creating a breadcrumb item using Angular. Here is what I have so far: https://i.stack.imgur.com/zt5yX.png I decided to add a dropdown for the breadcrumb item, but I'm facing a challenge: I want to be able to ...
Within the app component (the root component) of an Angular application, I have a few subscriptions set up. Since the app component remains active and is never destroyed until the application is closed, the ngOnDestroy method of the app component does not ...
I'm encountering an issue when trying to develop an email center using regex pattern, as I'm receiving a validator error in HTML. I have already installed ngx-chips and angular-editor, imported all the necessary modules and dependencies. Here is ...
Seeking a way to determine the total count of angular components using IntelliJ IDE. I attempted 'find in files' search tool with the terms "export class" but it retrieved more than just component files. Appreciate any help! =) Etienne. ...
Presented below is Angular code snippet: @Component({ selector: 'app-detail-view', templateUrl: './detail-view.component.html', styleUrls: ['./detail-view.component.css'] }) export class DetailViewComponent implements O ...
Greetings, I am a new learner of Angular and currently working on custom pagination. However, I am facing difficulty in finding the current page for implementing the next and previous functions. Can anyone guide me on how to obtain the current page value? ...
No matter what I do, nothing seems to be effective. I have successfully developed and launched the following module: Index.ts : import ContentIOService from "./IOServices/ContentIOService"; export = { ContentIOService: ContentIOService, } ...
I currently have an Angular application and am utilizing the Akamai CDN. Can you advise me on the most effective method to relay the health status (200, 500, etc.) to Akamai? I want to ensure that in case it doesn't return a 200 code, Akamai is able t ...
For the implementation of a chatbot, I am utilizing Microsoft's Bot Builder framework. However, upon implementing an alternative path to the dialog flow, I noticed that the user's Profile references are getting lost. Here is the code snippet fr ...
I have a dynamic array that I need to display in the view of a component whenever items are added or removed from it. The array is displayed using the ngOnInit() method in my App Component (ts): import { Component, OnInit } from '@angular/core' ...