The 'Bug Hunt' Technique: Level Up Your GitHub Profile Like a Mario Kart Speedrunner

The Quest Begins (The "Why")

I still remember the first time I stared at my GitHub profile and felt like a NPC in a RPG—just standing there, waiting for someone to notice me. I’d fork a few repos, open a pull request that said “Fix typo”, and watch it linger for weeks. Maintainers would comment “Thanks!” but never merge. I felt like I was throwing coins into a wishing well and hearing nothing back.

One night, after yet another ignored PR, I asked myself: What do maintainers actually want? I dug into a handful of projects that were merging contributions fast, and the pattern hit me like a blue shell in Mario Kart: they loved contributions that were instantly verifiable and required zero guesswork. If I could hand them a bug, a test that proved it existed, and a fix that matched their contribution guide to the letter, they’d have no reason to say no.

That realization turned my quest from “just get something merged” into a focused hunt: find a bug, prove it, fix it, and make the review process feel like a speedrun—smooth, fast, and satisfying.

The Revelation (The Insight)

The technique I now call The Bug Hunt is simple, but it’s surprisingly powerful when you follow it to the letter:

1. Pick an issue that’s labeled “good first issue”, “bug”, or “help wanted”.
2. Reproduce the bug locally—write the smallest possible script or test that shows the problem.
3. Add a failing test (or a reproduction snippet) to the project’s test suite.
4. Fix the bug with the minimal change that makes the test pass.
5. In your pull request, paste the exact steps to reproduce, link to the issue, and quote the relevant line from the project’s CONTRIBUTING.md or README that tells you how to format commits, run tests, etc.

Why does this work? Maintainers are busy. A PR that says “Fixes X” leaves them wondering: Is this really the bug? Does it break anything? Did they even read the guide? When you hand them a reproducible case and a test that goes from red to green, you’ve done half their job. You’ve shown you respect their workflow, and the merge button becomes almost reflexive.

Wielding the Power (Code & Examples)

The Struggle (What NOT to Do)

Here’s a typical first attempt I made—vague, lazy, and doomed to linger:

git commit -m "fix: button alignment"

PR description:

Fixed the button alignment issue.

No steps to reproduce, no test, no mention of the contribution guide. The maintainer asked for a screenshot, a test, and a rebase. Three days later, I finally merged—after losing momentum.

The Victory (The Bug Hunt in Action)

Let’s walk through a real example. I spotted a “good first issue” in the open‑source library date‑utils-js (a tiny helper for formatting dates). The issue read:

formatDate throws when passed an invalid ISO string.

Step 1 – Reproduce

I created a tiny reproduction file:

// reproduce.js
const { formatDate } = require('date-utils-js');

try {
  formatDate('not-a-date');
} catch (e) {
  console.error(e.message); // → Expected: Invalid date
}

Running it gave an uncaught TypeError because the library tried to call .getTime() on undefined.

Step 2 – Add a failing test

The project uses Jest, so I added a test in __tests__/formatDate.test.js:

test('throws on invalid ISO string', () => {
  expect(() => formatDate('not-a-date')).toThrow('Invalid date');
});

Running npm test showed the test in red—perfect.

Step 3 – Fix the bug

I looked at the source:

// src/formatDate.js
function formatDate(isoString) {
  const date = new Date(isoString);
  // Oops: no check for invalid date
  return date.toLocaleDateString();
}

I added a guard clause:

function formatDate(isoString) {
  const date = new Date(isoString);
  if (isNaN(date.getTime())) {
    throw new Error('Invalid date');
  }
  return date.toLocaleDateString();
}

Step 4 – Verify

npm test now passed. The reproduction script printed the expected error message instead of crashing.

Step 5 – PR description that speaks the maintainer’s language

Fixes #42: `formatDate` throws on invalid ISO string

Steps to reproduce:
1. Clone the repo
2. Run `node reproduce.js` (see attached)
3. Observe uncaught TypeError

Added a test in `__tests__/formatDate.test.js` that asserts the proper error message.
Fixed by validating the Date object before formatting.

As per CONTRIBUTING.md:
- Commit message uses `fix:` prefix
- Test added for new behavior
- Squashed into a single commit

Commit message:

fix: validate date before formatting (#42)

The maintainer merged it within two hours. No back‑and‑forth, no requests for screenshots—just a clean, green PR that matched their workflow to a tee.

Common Traps to Avoid

Trap	Why it hurts	How to dodge it
Vague description (“Fixes bug”)	Leaves maintainer guessing	Paste exact repro steps, link to issue, quote contributing guide
Missing test	Reviewer must trust you didn’t break something	Add a failing test that turns green after your fix
Ignoring the guide (wrong commit prefix, no squash)	Signals you didn’t read the repo’s rules	Copy‑paste the relevant lines from CONTRIBUTING.md into your PR description
Large, unrelated changes	Increases review time, risk of rejection	Keep the PR focused on the single issue you reproduced

Why This New Power Matters

When you start hunting bugs this way, your GitHub profile stops looking like a ghost town and starts showing a trail of meaningful, merged contributions. Maintainers notice you because you make their lives easier—they can merge your PR with confidence, and they often invite you to tackle harder issues next.

Your contributions become proof points: I can read a repo’s guidelines, reproduce a problem, and ship a fix that passes the test suite. That’s the signal recruiters and collaborators look for when they skim your activity graph.

Plus, there’s a genuine thrill in watching a test go from red to green—like nailing a perfect drift in Mario Kart and hearing that sweet cha‑cha‑cha of coins. It turns open source from a chore into a game you actually want to play.

Your Turn

Find a repository you love, scan its issue tracker for a “good first issue” or bug label, and run through the Bug Hunt steps. Reproduce, test, fix, and craft a PR that follows the contribution guide to the letter.

When you get that merge, drop the link in the comments below—I’ll be cheering you on like a fellow speedrunner at the finish line. Happy hunting!