The Confession
It was 3 AM. I had just finished writing 200 lines of "brilliant" JavaScript. My function was elegant. My logic was complex. My variable names? Chef's kiss.
The next morning, I opened the file and literally said out loud: "What the hell is this?"
I spent the next 4 hours trying to understand my own code. Then I deleted all 200 lines and replaced them with 30 lines of a built-in method I didn't know existed.
That day, I learned something important:
The best code isn't the cleverest code. It's the code that isn't there.
Why This Matters in 2026
We're living in a strange time. AI can generate thousands of lines of code in seconds. Junior developers are copying Stack Overflow answers without thinking. Codebases are becoming massive, messy, and impossible to maintain.
But here's the truth nobody tells you:
Every line of code you write is:
- A line you'll have to debug later
- A line someone else will have to understand
- A line that could potentially break
- A line that adds complexity
In 2026, the most valuable developers won't be the ones who write the most code. They'll be the ones who write the least code while solving the problem completely.
Real Story: The Function That Shouldn't Exist
Last month, I was helping a friend with his React project. He showed me this:
const checkUserStatus = (user) => {
if (user.isActive === true) {
if (user.hasSubscription === true) {
if (user.subscriptionStatus === 'active') {
return true;
} else {
return false;
}
} else {
return false;
}
} else {
return false;
}
}
35 lines of nested if-else hell.
I looked at it for 10 seconds and said: "You don't need this function."
He was confused. "But how will I check if the user is active?"
I showed him:
const isUserActive = user?.isActive && user?.subscriptionStatus === 'active';
One line.
No nested conditions. No multiple returns. No confusion.
He stared at the screen for a full minute. Then he deleted his 35-line function and never looked back.
The Art of Deleting Code
1. The "Do I Really Need This?" Test
Before writing ANY code, ask yourself:
- Can I solve this without code? (Sometimes process changes > code changes)
- Does this feature already exist somewhere?
- Am I solving a problem that actually exists?
- Will anyone use this? (Be honest)
I once spent 3 days building a "feature" that literally nobody used. We deleted it after 6 months. 72 hours of my life gone.
2. The Built-in Method Rule
JavaScript (and every language) has hundreds of built-in methods. Before writing a custom function, Google:
"JavaScript built-in method for [what I'm trying to do]"
90% of the time, there's already a method. Use it.
Bad:
const getEvenNumbers = (arr) => {
let result = [];
for (let i = 0; i < arr.length; i++) {
if (arr[i] % 2 === 0) {
result.push(arr[i]);
}
}
return result;
}
Good:
const getEvenNumbers = (arr) => arr.filter(num => num % 2 === 0);
10 lines → 1 line. Same result. Less to debug. Less to maintain.
3. The "Sleep On It" Approach
Never merge code the same day you write it. I've made this a personal rule:
Write today. Review tomorrow.
Every single time I do this, I find at least 10-20% of my code that can be deleted or simplified. Morning brain sees things that midnight brain misses.
4. The "Is This Over-Engineered?" Check
We developers love making things "scalable" and "flexible."
Your little blog doesn't need microservices.
Your todo app doesn't need Redux.
Your portfolio doesn't need a database.
I once saw a beginner build a "hello world" app with:
- React
- Redux
- TypeScript
- Webpack config with 200 lines
- Docker container
For "Hello World."
Please. Stop.
What Senior Developers Know That Juniors Don't
I asked a senior developer friend (15 years experience) what makes someone a "senior." His answer surprised me:
"Juniors write code to prove they can write code. Seniors write code to solve problems. Sometimes solving the problem means writing nothing."
He showed me a PR where he literally deleted 500 lines of code and added 50. The PR description?
"Removed dead code. Simplified logic. Everything works the same. Faster now."
That's the mindset.
Practical Ways to Delete Your Own Code
🔹 Use Logical Operators
**Instead of:**
if (isLoggedIn === true) {
showDashboard();
}
Write:
isLoggedIn && showDashboard();
🔹 Use Default Parameters
Instead of:
const greet = (name) => {
if (!name) {
name = 'Guest';
}
return `Hello ${name}`;
}
Write:
const greet = (name = 'Guest') => `Hello ${name}`;
🔹 Use Early Returns
Instead of:
const processData = (data) => {
if (data) {
if (data.length > 0) {
// 20 lines of processing
return result;
} else {
return [];
}
} else {
return [];
}
}
Write:
const processData = (data) => {
if (!data || data.length === 0) return [];
// 20 lines of processing
return result;
}
🔹 Use Array Methods
Learn: map, filter, reduce, find, some, every
Replace 90% of your loops with these.
The "Code Delete" Challenge
Here's my challenge to you:
For the next 7 days, every time you write a function, try to make it shorter than 10 lines.
If it's longer, ask yourself:
- Can I break this into smaller functions?
- Am I repeating logic that already exists?
- Is there a built-in method for this?
- Can I combine these conditions?
You'll be shocked how much code disappears.
When NOT to Delete Code
Okay, real talk. Deleting code is great, but:
- Don't delete working code just to be clever — If it works and it's readable, leave it. Refactoring for the sake of refactoring is a waste of time.
- Don't delete without understanding — Make sure you know what that code actually does before removing it.
- Don't delete in production directly — Test, test, test.
The Mindset Shift
I used to measure my productivity by "lines of code written."
Now I measure it by:
- Problems solved
- Complexity reduced
- Code deleted
There's nothing more satisfying than opening a pull request that shows -200 lines and a message that says "Simplified component logic."
Your future self will thank you. Your teammates will thank you. The poor developer who maintains your code 2 years from now will thank you.
Final Thought
In 2026, AI will write code. AI will debug code. AI will even suggest optimizations.
But AI won't know when code shouldn't exist in the first place.
That judgment? That restraint? That's human.
The best developer isn't the one who writes the most brilliant code. It's the one who knows when to write nothing at all.
Have you ever written code that you later deleted completely? Share your stories in the comments — I want to feel less alone in my 3 AM mistakes.
Disclosure: AI helped me write this — but the bugs, fixes, and facepalms? All mine. 😅
Every line reviewed and tested personally.
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