KiranMantha / readme.md

Last active May 27, 2026 13:00

Validate creditcard without BE but using Luhn's algorithm and card rules

The Luhn algorithm (or "modulus 10") is a simple checksum formula used to validate identification numbers like credit cards and IMEI codes. It is designed to catch accidental input errors, such as mistyped digits.

Luhn's Algo

Algo Logic:

To calculate or validate using the Luhn formula:

Double every second digit starting from the rightmost digit (the check digit) and moving left.
Sum the digits if any doubled product is greater than 9 (e.g., if (6 \times 2 = 12), add (1+2=3)).
Alternatively, subtract 9.Sum all numbers (both the untouched digits and the newly modified doubled digits).

KiranMantha / readme.md

Last active May 8, 2026 06:44

The Roadmap to Mastering Tool Calling in AI Agents

In this article, you will learn how to design, scale, and secure tool calling in AI agents so that the layer connecting model reasoning to real-world action holds up in production.

Topics we will cover include:

How the tool calling protocol separates model reasoning from deterministic execution, and why that boundary matters.
How to write tool definitions, error handling, and parallelization strategies that stay reliable as your agent scales.
How to manage tool catalog size, secure agentic systems, and evaluate tool calls beyond end-to-end task success.

KiranMantha / object-vs-map.md

Last active April 29, 2026 14:37

{} vs Map

For simple use cases, plain objects work fine. However, Maps were specifically designed to be "true" hash tables, fixing several edge cases where objects fail or get messy. Here is what you gain by using a Map over a plain Object:

1. Key Flexibility

Object: Keys must be Strings or Symbols. If you try to use a number or an object as a key, it gets forced into a string (e.g., {: 'val'} becomes {"1": 'val'}).
Map: Any value can be a key, including functions, objects, or any primitive. This is huge for associating data with DOM elements or complex state.

KiranMantha / nextjs-cloudflare-cache.md

Last active April 24, 2026 11:30

Nextjs 14.x page router cloudflare caching

Original Issue Link: vercel/next.js#47516

Fixing Next.js + Cloudflare caching issue for `_next/data` with `x-middleware-prefetch`

When using Next.js Pages Router with getServerSideProps behind Cloudflare CDN, I ran into an issue where client-side navigations were repeatedly hitting the origin and, in some cases, rendering blank pages.

This was especially visible for routes backed by AEM Sling Models using a catch-all slug page.

KiranMantha / 2026-01-23-feat-claude-code-multi-agent-orchestration-plan.md

Created January 24, 2026 10:57 — forked from kieranklaassen/2026-01-23-feat-claude-code-multi-agent-orchestration-plan.md

Claude Code Multi-Agent Orchestration System

Claude Code TeammateTool - Source Code Analysis

This is not a proposal. This documents existing but hidden functionality found in Claude Code v2.1.19 binary, plus speculation on how it could be used.

Executive Summary

TeammateTool already exists in Claude Code. We extracted this from the compiled binary at ~/.local/share/claude/versions/2.1.19 using strings analysis. The feature is fully implemented but gated behind feature flags (I9() && qFB()).

KiranMantha / code-execution-priority.md

Last active January 20, 2026 06:16

Javascript code execution priority

JavaScript doesn’t just run code in order — it maintains multiple queues with different priorities:

Call Stack: Currently executing code (highest priority)
Microtask Queue: Promises, queueMicrotask, MutationObserver
Macrotask Queue: setTimeout, setInterval, I/O, UI events
Render Queue: requestAnimationFrame, style/layout/paint

console.log('1: Sync');
setTimeout(() =&gt; console.log('2: Macro'), 0);

KiranMantha / api-guidelines-from-day1.md

Last active December 29, 2025 03:34

The 3 a.m. Call That Changed The Way I Design APIs - The New Stack

At 3:17 a.m. on a Tuesday, my phone buzzed with the alert that would reshape the way I think about API design.

Our customer-facing API had stopped responding. Not slowly degrading; it was completely dead. Three downstream services went with it. By the time I got to my laptop, customer support tickets were flooding in.

The root cause? A single database replica had gone down, and our API had no fallback. One failure cascaded into total unavailability. I spent the next four hours manually rerouting traffic while our customers waited.

That night cost us $14,000 in service-level agreement (SLA) credits and a lot of trust. But it taught me something I now apply to every API I build: Every design decision should pass what I call “The 3 a.m. Test.”

The 3 a.m. Test

KiranMantha / nested-aem-components.md

Last active October 11, 2025 03:25

Nested aem components

The sling model will give a component that extends Container which dictates the allowed components via policy. In react component, the EditableComponent will be mapped to parent and the add components related aem container is mapped to cqPath/*. This is very important else the child container will take the focus of authoring dialog instead of whole component.

In below example, we have a aem carousel component that provide :items representing the cards or images to be displayed inside the carousel and also have title, layout, cta etc attributes that define the content placement around carousel.

On FE, the design dictates that the title should appear on left side and carousel on right. in editor mode, we should display a Add Components aem container to add the components to the carousel and we're manually iterating through cqItems[which are :items in aem java component] as children to a 3rdparty carousel component (here we're using react-slick slider as carousel that accepts slides as children)

KiranMantha / react-native-calander.md

Last active July 16, 2025 14:19

React-Native calander component

// Calander.tsx
import i18n from '@/i18n';
import { FontAwesome } from '@expo/vector-icons';
import { ReactNode, useEffect, useState } from 'react';
import { FlatList, Modal, Pressable, Text, TouchableOpacity, View } from 'react-native';
import { getStyles } from './Calander.styles';

type CalendarModalProps = {
  initialDate?: string;