Felipe Lima felipecsl

## smuggling.js
// Source: https://paulbutler.org/2025/smuggling-arbitrary-data-through-an-emoji/
function byteToVariationSelector(byte) {
    if (byte < 16) {
        return String.fromCodePoint(0xFE00 + byte);
    } else {
        return String.fromCodePoint(0xE0100 + (byte - 16));
    }
}

function encode(base, str) {

## yarn-lockfile-diff.ts
const fs = require('fs');
const yarnLockfile = require('@yarnpkg/lockfile');

function parseLockfile(filePath) {
  const file = fs.readFileSync(filePath, 'utf8');
  return yarnLockfile.parse(file).object;
}

function getVersionDifferences(beforeLockfile, afterLockfile) {
  const diffs: Record<string, { before: string, after: string }> = {};

## heic_to_jpeg.sh
for file in *.HEIC; do sips -s format jpeg "$file" --out "${file%.*}.jpg"; done

## decryptRailsCookie.ts
import crypto from 'crypto';
import { promisify } from "node:util";

const pbkdf2 = promisify(crypto.pbkdf2);

// Works with Rails 7.1.3
// secretKeyBase is Rails.application.secret_key_base
async function decryptCookie(encryptedCookie: string, cookieName: string, secretKeyBase: string) {
  const cookie = decodeURIComponent(encryptedCookie);
  const [data, iv, authTag] = cookie.split("--").map(v => Buffer.from(v, 'base64'));

## useLazyEffect.ts
// https://stackoverflow.com/a/67504622/51500
import {
  DependencyList,
  EffectCallback,
  useCallback,
  useEffect,
  useRef,
} from "react";
import { debounce } from "lodash";

## install-redistimeseries.sh
#!/bin/bash
wget http://downloads.sourceforge.net/ltp/lcov-1.14-1.noarch.rpm
sudo yum localinstall lcov-1.14-1.noarch.rpm
git clone --recursive https://github.com/RedisTimeSeries/RedisTimeSeries.git
cd RedisTimeSeries
sudo make setup

## install-redis.sh
#!/bin/bash

###############################################
# To use:
# chmod +x install-redis.sh
# ./install-redis.sh
###############################################

version=6.0.8

## FakeResourceHttpURLConnection.kt
// Based on https://stackoverflow.com/questions/565535/mocking-a-url-in-java

package com.example

import java.io.InputStream
import java.net.HttpURLConnection
import java.net.URL

class FakeResourceHttpURLConnection(
  url: URL,

## retryIfThrown.kt
/**
 * Retries the provided [block] up to [times] times if the block throws an exception of the type
 * [exceptionType]. If any other exception type is thrown, the exception is caught and then
 * immediately rethrown.
 */
fun retryIfThrown(times: Int, exceptionType: KClass<out Throwable>, block: () -> Unit) {
  for (i in 0 until times) {
    try {
      block()
      break

## setup.sh
# Install all the packages
sudo yum install -y \
 curl gpg gcc gcc-c++ make git \
 openssl-devel readline-devel libcurl-devel \
 zlib-devel postgresql-server.x86_64 ruby-devel \
 sqlite sqlite-devel ruby-rdoc python-devel \
 cairo-devel libffi-devel python-pip nc docker \
 tmux htop postgresql-libs postgresql-devel \
 amazon-cloudwatch-agent
	// Source: https://paulbutler.org/2025/smuggling-arbitrary-data-through-an-emoji/
	function byteToVariationSelector(byte) {
	if (byte < 16) {
	return String.fromCodePoint(0xFE00 + byte);
	} else {
	return String.fromCodePoint(0xE0100 + (byte - 16));
	}
	}

	function encode(base, str) {
	const fs = require('fs');
	const yarnLockfile = require('@yarnpkg/lockfile');

	function parseLockfile(filePath) {
	const file = fs.readFileSync(filePath, 'utf8');
	return yarnLockfile.parse(file).object;
	}

	function getVersionDifferences(beforeLockfile, afterLockfile) {
	const diffs: Record<string, { before: string, after: string }> = {};
	import crypto from 'crypto';
	import { promisify } from "node:util";

	const pbkdf2 = promisify(crypto.pbkdf2);

	// Works with Rails 7.1.3
	// secretKeyBase is Rails.application.secret_key_base
	async function decryptCookie(encryptedCookie: string, cookieName: string, secretKeyBase: string) {
	const cookie = decodeURIComponent(encryptedCookie);
	const [data, iv, authTag] = cookie.split("--").map(v => Buffer.from(v, 'base64'));
	// https://stackoverflow.com/a/67504622/51500
	import {
	DependencyList,
	EffectCallback,
	useCallback,
	useEffect,
	useRef,
	} from "react";
	import { debounce } from "lodash";
	#!/bin/bash
	wget http://downloads.sourceforge.net/ltp/lcov-1.14-1.noarch.rpm
	sudo yum localinstall lcov-1.14-1.noarch.rpm
	git clone --recursive https://github.com/RedisTimeSeries/RedisTimeSeries.git
	cd RedisTimeSeries
	sudo make setup
	#!/bin/bash

	###############################################
	# To use:
	# chmod +x install-redis.sh
	# ./install-redis.sh
	###############################################

	version=6.0.8
	// Based on https://stackoverflow.com/questions/565535/mocking-a-url-in-java

	package com.example

	import java.io.InputStream
	import java.net.HttpURLConnection
	import java.net.URL

	class FakeResourceHttpURLConnection(
	url: URL,
	/**
	* Retries the provided [block] up to [times] times if the block throws an exception of the type
	* [exceptionType]. If any other exception type is thrown, the exception is caught and then
	* immediately rethrown.
	*/
	fun retryIfThrown(times: Int, exceptionType: KClass<out Throwable>, block: () -> Unit) {
	for (i in 0 until times) {
	try {
	block()
	break
	# Install all the packages
	sudo yum install -y \
	curl gpg gcc gcc-c++ make git \
	openssl-devel readline-devel libcurl-devel \
	zlib-devel postgresql-server.x86_64 ruby-devel \
	sqlite sqlite-devel ruby-rdoc python-devel \
	cairo-devel libffi-devel python-pip nc docker \
	tmux htop postgresql-libs postgresql-devel \
	amazon-cloudwatch-agent