As an Angular developer, a large part of my daily work involves debugging — fixing API issues, handling undefined values, resolving RxJS problems, and tracking UI bugs.

Before using AI, debugging meant:

  • Searching error messages
  • Reading multiple articles
  • Trying different fixes
  • Spending hours stuck on one issue

Now AI helps me fix Angular bugs 5x faster.

Instead of spending hours searching for solutions, I can understand and fix issues in minutes.

In this article, I'll share real Angular debugging scenarios, prompts I use and how AI improved my productivity.

My Daily Angular Debugging Workflow

Before AI

Error in Angular
   ↓
Google search
   ↓
StackOverflow
   ↓
Try fixes
   ↓
More errors
   ↓
Finally fixed

Typical time: 1–2 hours

After AI

Error in Angular
   ↓
Ask AI
   ↓
Understand problem
   ↓
Apply fix
   ↓
Done

Typical time:

10–20 minutes

Scenario 1 — Fixing "Undefined" Errors

One of the most common Angular errors is:

Cannot read properties of undefined

This happens often when API data is not loaded yet.

Real Example

I had code like this:

this.users.map(user => user.name);

Sometimes it crashed.

Error:

Cannot read properties of undefined (reading 'map')

AI Prompt I Used

Angular Error:

Cannot read properties of undefined (reading 'map')
Code:
this.users.map(user => user.name);
Why is this happening?

AI Explanation

AI explained:

  • users is undefined initially
  • API response not loaded yet

This saved a lot of time.

Fix

this.users?.map(user => user.name);

or

if(this.users){
 this.users.map(user => user.name);
}

Time saved: ~1 hour → 5 minutes

Scenario 2 — Debugging API Issues

Angular apps depend heavily on APIs.

API bugs take time to debug.

Example

API call:

this.http.get('/api/orders')
.subscribe(res => {
 this.orders = res;
});

Error:

401 Unauthorized

AI Prompt

Angular HttpClient returning 401 Unauthorized.
Code:
this.http.get('/api/orders')
Backend uses JWT authentication.
What could be wrong?

AI Suggestions

AI suggested:

  • Missing token
  • Expired token
  • Wrong header

Fix

this.http.get('/api/orders', {
 headers: {
   Authorization: 'Bearer ' + token
 }
});

Time saved:

2 hours → 10 minutes

Scenario 3 — Fixing RxJS Mistakes

RxJS bugs are common in Angular.

They are hard to debug.

Real Example

Problem code:

getUsers() {
 this.http.get('/api/users')
 .subscribe(users => {
   return users;
 });
}

Component:

this.users = this.service.getUsers();

Result:

users is undefined

AI Prompt

Angular service returning undefined.
Code:
getUsers() {
 this.http.get('/api/users')
 .subscribe(users => {
   return users;
 });
}
Why?

AI Explanation

AI explained:

  • subscribe does not return values
  • Must return Observable

Fix

getUsers() {
 return this.http.get('/api/users');
}

Time saved:

~1 hour → 10 minutes

Scenario 4 — Fixing Template Errors

Angular template errors can be confusing.

Real Example

Template:

<div>{{user.name}}</div>

Error:

Cannot read properties of undefined

AI Prompt

Angular template error:
{{user.name}}
Error:
Cannot read properties of undefined
How to fix?

Fix

<div>{{user?.name}}</div>

Simple fix.

Hard to find sometimes.

Scenario 5 — Generating Unit Tests Faster

Writing tests takes time.

AI speeds this up.

Example Service

getTotal(a:number,b:number){
 return a+b;
}

Prompt

Write Jasmine unit tests for this Angular function.

Generated Test

describe('getTotal',()=>{
 it('should add numbers',()=>{
  expect(service.getTotal(2,3)).toBe(5);
 });
});

Time saved:

30 minutes → 2 minutes

Figure — How I Use AI Daily

Angular Bug
   ↓
Copy Error
   ↓
Paste to AI
   ↓
Explain Problem
   ↓
Apply Fix

This process is very fast.

Prompts I Use Daily

Prompt 1 — Error Fixing

Fix this Angular error and explain:
[Error Message]
[Code]

Prompt 2 — Find Bugs

Find bugs in this Angular code:
[Code]

Prompt 3 — Improve Code

Improve this Angular code:
[Code]

Prompt 4 — Explain RxJS

Explain this RxJS code:
[Code]

Very useful.

Productivity Improvements

1. Faster Debugging

Before:

  • 2 hours per bug

Now:

  • 10–20 minutes

2. Less Context Switching

Before:

  • Google
  • StackOverflow
  • Docs

Now:

  • One AI window

3. Better Focus

Now I focus on:

  • Application design
  • Business logic
  • Architecture

Instead of:

  • Searching errors

Tips to Use AI Effectively

Tip 1 — Include Full Error

Bad:

Angular error

Good:

Angular error:
Cannot read properties of undefined
Code:
[Code]

Tip 2 — Include Component + Service

AI needs context.

Better results.

Tip 3 — Ask Why

Always ask:

Why did this happen?

This improves learning.

Tip 4 — Verify Code

Always test.

AI is not always correct.

Tools I Use

Main Tool

  • OpenAI ChatGPT

Used for:

  • Debugging
  • Code explanation
  • Fixes

Code Suggestions

  • GitHub Copilot

Used for:

  • Writing code
  • Autocomplete

Biggest Benefit

The biggest benefit is not speed.

It is clarity.

AI helps me:

  • Understand problems faster
  • Learn faster
  • Think better

Final Thoughts

AI has completely changed how I debug Angular applications.

Tasks that used to take hours now take minutes.

Instead of fighting errors, I focus on solving problems.

AI did not replace debugging.

It made debugging smarter.

If you are an Angular developer and not using AI yet, you are missing a huge productivity boost.

Start simple:

  • Ask AI to explain errors
  • Ask AI to find bugs
  • Ask AI to improve code

You will quickly see the difference.