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Cursor Rules for Expo and React Native Projects

This document outlines the standardized rules and guidelines for developing mobile applications using Expo and React Native. These rules are designed to ensure consistency, maintainability, performance, accessibility, and error-free development across all projects. They apply to all Expo-based React Native apps and are crafted to minimize troubleshooting efforts and enforce best practices.

Cursor Adherence

Mandatory Compliance: Cursor must read and strictly follow all rules in this document for every Expo and React Native project.
Self-Check: Before generating code or modifying a project, Cursor must verify that its actions align with these guidelines.
Error Prevention: If Cursor detects a potential violation of these rules (e.g., creating a new project inside an existing one), it must halt and prompt the user for clarification instead of proceeding.
Documentation Reference: Cursor must reference this document (cursor-rules.md) w

TaskContract

A smart contract for a Todo App on the Ethereum blockchain.

Overview

TaskContract is a smart contract for a Todo App on the Ethereum blockchain. It allows users to add tasks and delete tasks. It also allows users to view their own tasks.

Functions

TaskContract has the following functions:

addTask(string memory taskText, bool isDeleted) - adds a new task to the contract.

useTimeout

A custom React Hook that allows you to call a callback after a specified delay.

Usage

import { useTimeout } from './useTimeout';

const callback = () =&gt; {

	#!/bin/bash

	echo "🔧 Starting Mac dev cleanup..."

	# 1. Clear User & System Cache
	echo "🧹 Clearing system and user caches..."
	sudo rm -rf ~/Library/Caches/* /Library/Caches/*

	# 2. Xcode Derived Data
	echo "🧹 Removing Xcode Derived Data..."

	// Types for the result object with discriminated union
	type Success<T> = {
	data: T;
	error: null;
	};

	type Failure<E> = {
	data: null;
	error: E;
	};

	{
	"version": "0.1.0",
	"name": "pump",
	"instructions": [
	{
	"name": "initialize",
	"docs": [
	"Creates the global state."
	],
	"accounts": [

	// Function to pad a given key to a length of 32 bytes using the CryptoJS library
	function padKey(e) {
	// Convert the input string 'e' to a UTF-8 encoded WordArray
	let t = CryptoJS.enc.Utf8.parse(e);

	// Create an empty WordArray to store the padded key
	let n = CryptoJS.lib.WordArray.create();

	// Concatenate the UTF-8 encoded WordArray 't' to 'n'
	n.concat(t);

	import { Connection, SendOptions } from '@solana/web3.js';
	export type JitoRegion = 'mainnet' \| 'amsterdam' \| 'frankfurt' \| 'ny' \| 'tokyo';
	export const JitoEndpoints = {
	mainnet: 'https://mainnet.block-engine.jito.wtf/api/v1/transactions',
	amsterdam: 'https://amsterdam.mainnet.block-engine.jito.wtf/api/v1/transactions',
	frankfurt: 'https://frankfurt.mainnet.block-engine.jito.wtf/api/v1/transactions',
	ny: 'https://ny.mainnet.block-engine.jito.wtf/api/v1/transactions',
	tokyo: 'https://tokyo.mainnet.block-engine.jito.wtf/api/v1/transactions',
	};
	export function getJitoEndpoint(region: JitoRegion) {

	var Gpio = require('onoff').Gpio; //include onoff to interact with the GPIO
	var LED = new Gpio(4, 'out'); //use GPIO pin 4, and specify that it is output
	var blinkInterval = setInterval(blinkLED, 250); //run the blinkLED function every 250ms

	function blinkLED() { //function to start blinking
	if (LED.readSync() === 0) { //check the pin state, if the state is 0 (or off)
	LED.writeSync(1); //set pin state to 1 (turn LED on)
	} else {
	LED.writeSync(0); //set pin state to 0 (turn LED off)
	}

	OX_API_KEY=
	OX_API_SECRET=