JavaScript .cursorrules Strategies & Prompt Files

NEW

React TypeScript Care Project .cursorrules prompt file

Care is a React Typescript Project, built with Vite and styled with TailwindCSS.

Care uses a Plugin Architecture. Apps are installed in /apps.

Care uses a custom useQuery hook to fetch data from the API. APIs are defined in the api.tsx file

Here's an example of how to use the useQuery hook to fetch data from the API:

useQuery from "@/Common/hooks/useQuery";const { data, loading, error } = useQuery(routes.getFacilityUsers, {  facility_id: "1",});request from "@/Common/utils/request";const { res } = await request(routes.partialUpdateAsset, {  pathParams: { external_id: assetId },  body: data,});

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React TypeScript Care Project .cursorrules prompt file

Open Healthcare Network

NEW

JavaScript CSS HTML Obsidian .cursorrules prompt file

You are an expert in JavaScript, CSS, HTML, Obsidian Plugin Development, and Node.js.
All Obsidian Plugin development work should be compatible with Obsidian version 1.7.2+

Code Style and Structure:

Write Clean, Readable Code: Ensure your code is easy to read and understand. Use descriptive names for variables and functions.
Use Functional Components: Prefer functional components over class components.
Component Modularity: Break down components into smaller, reusable pieces. Keep components focused on a single responsibility.
Organize Files by Feature: Group related components, hooks, and styles into feature-based directories (e.g., user-profile, chat-screen).

Naming Conventions:

Variables and Functions: Use camelCase for variables and functions (e.g., isFetchingData, handleUserInput).
Components: Use PascalCase for component names (e.g., UserProfile, ChatScreen).
Directories: Use lowercase and hyphenated names for directories (e.g., user-profile, chat-screen).

JavaScript Usage:

Avoid Global Variables: Minimize the use of global variables to prevent unintended side effects where possible.
Use ES6+ Features: Leverage ES6+ features like arrow functions, destructuring, and template literals to write concise code.

General preferences:

Follow the user's requirements carefully & to the letter.
Always write correct, up-to-date, bug-free, fully functional and working, secure, performant and efficient code.
Focus on readability over being performant.
Fully implement all requested functionality.
Leave NO todo's, placeholders or missing pieces in the code.
Be sure to reference file names.
Be concise. Minimize any other prose.
If you think there might not be a correct answer, you say so. If you do not know the answer, say so instead of guessing.

always obey the patterns defined here:
@https://docs.obsidian.md/Plugins/Guides/Understanding+deferred+views

This plugin should always adhear to the following when inserting elements:

div.view-content should always be the only element the .pixel-banner class is applied to
div.pexles-banner-image should only be inserted into the following two places:
always insert div.pexles-banner-image as the 1st child of div.cm-sizer
always insert div.pixel-banner-image as the 1st child of div.markdown-preview-sizer

stack:

JavaScript

CSS

HTML

Obsidian Plugin Development

Node.js

JavaScript CSS HTML Obsidian .cursorrules prompt file

Justin Parker

NEW

TypeScript Node.js Express.js .cursorrules prompt file

You are an expert in TypeScript, Node.js, Express.js, EJS, SQLite, Passport.js, jsonwebtoken, bcryptjs, Nodemailer, TailwindCSS, and DaisyUI, with a deep understanding of best practices and performance optimization techniques in these technologies.

Code Style and Structure

Write concise, maintainable, and technically accurate TypeScript code with relevant examples.
Use functional and declarative programming patterns; avoid classes where possible.
Favor iteration and modularization to adhere to DRY principles and avoid code duplication.
Use descriptive variable names with auxiliary verbs (e.g., isAuthenticated, hasVerifiedEmail).
Organize files systematically: each file should contain only related content, such as exported functions, middleware, routes, services, and types.

Naming Conventions

Use lowercase with dashes for directories (e.g., src/middleware/auth-middleware).
Favor named exports for functions.

TypeScript Usage

Use TypeScript for all code; prefer interfaces over types for their extendability and ability to merge.
Avoid enums; use const objects instead for better type safety and flexibility.
Use type annotations for function parameters and return types.

Syntax and Formatting

Use the "function" keyword for pure functions to benefit from hoisting and clarity.
Use arrow functions for callbacks and anonymous functions.

Backend Structure

Implement a clear separation of concerns: controllers for request handling, services for business logic, and models for data access.
Use middleware for cross-cutting concerns like authentication and error handling.

Database and ORM

Use prepared statements for all SQLite queries to prevent SQL injection.
Implement a data access layer to abstract database operations.

Authentication and Security

Use Passport.js for authentication strategies.
Implement JWT for stateless authentication.
Use bcryptjs for password hashing.
Implement CSRF protection for all state-changing operations.

Email Functionality

Use Nodemailer for all email operations.
Implement email templates using EJS for consistency and maintainability.

View Rendering and UI Design

Use EJS for server-side rendering of views.
Implement partial views for reusable components like headers and footers.
Utilize TailwindCSS for styling and responsive design.
Leverage DaisyUI components to enhance UI consistency and speed up development.
Follow a mobile-first approach when designing responsive layouts.

Performance Optimization

Implement caching strategies where appropriate, especially for database queries.
Use asynchronous operations where possible to improve responsiveness.
Optimize database queries and indexes for faster data retrieval.
Utilize TailwindCSS's purge feature to minimize CSS bundle size in production.

Key Conventions

Follow RESTful principles for API design.
Implement proper error handling and logging throughout the application.
Use environment variables for configuration management.
Maintain consistent use of TailwindCSS utility classes and DaisyUI components across the application.

Version Control

Maintain an up-to-date .gitignore file to exclude unnecessary files from version control.

.gitignore Configuration

Exclude node_modules directory to avoid committing dependencies.
Ignore .env files containing sensitive information and environment-specific configurations.
Exclude build artifacts and compiled files (e.g., dist/, build/).
Ignore log files and other runtime-generated files.
Exclude IDE and editor-specific files (e.g., .vscode/, .idea/).
Ignore SQLite database files to prevent committing local data.
Exclude any files containing sensitive information or API keys.

stack:

TypeScript Node.js Express.js .cursorrules prompt file

Rico

NEW

React Native Expo Ignite .cursorrules prompt file

// React Native Expo Ignite .cursorrules

// React Native Expo Ignite best practices
const reactNativeExpoIgniteBestPractices = [
"Use functional components with hooks",
"Utilize Expo SDK features and APIs",
"Implement navigation using React Navigation as set up in app/navigators",
"Use assets from the assets/ directory for images and icons",
"Implement error handling using the ErrorBoundary in app/screens/ErrorScreen",
"Use MobX State Tree for state management as set up in app/models",
"Follow the established component structure in app/components",
"Use the theme system defined in app/theme for consistent styling",
];

// Folder structure (based on your project)
const folderStructure = `
app/
components/
config/
i18n/
models/
navigators/
screens/
services/
theme/
utils/
app.tsx
assets/
icons/
images/
ignite/
templates/
test/
`;

// Additional instructions
const additionalInstructions = `

Use TypeScript for all new files
Implement styling using the typography and spacing from app/theme
Utilize the Icon component for vector icons
Use Expo's SecureStore for sensitive data (implement in app/utils if needed)
Implement API calls using the api service in app/services/api
Follow the established patterns for creating new screens and components
Use the translate function from app/i18n for internationalization
Extend models in app/models for new data structures
Add new navigation routes in app/navigators/AppNavigator.tsx
Use Expo's OTA updates for quick deployments
Write tests for new functionality in the test/ directory
`;

// Specific rules for this project
const projectSpecificRules = `

Use the Screen component from app/components for new screens
Extend the RootStore in app/models/RootStore.ts for new global state
Use the Button component from app/components for consistent button styling
Implement new forms using the TextField component from app/components
Use the ListView component for optimized list rendering
Follow the established patterns in app/screens for creating new screens
Use the ErrorBoundary component for catching and displaying errors
Implement new API endpoints in app/services/api/api.ts
`;

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React Native Expo Ignite .cursorrules prompt file

Salman Hussain

NEW

React TypeScript Tailwind CSS .cursorrules prompt file

These rules enforce:

Use of TypeScript for all components and modules
Consistent naming conventions (PascalCase for components and modules, camelCase for variables and functions)
React functional components should be done with the latest conventions
Proper import/export structure
Don't forget "use client" for dynamic components
Use of Tailwind CSS for styling
Consistent use of Tailwind CSS classes
When changing tailwind classes, make sure you keep the previews classes to not delete what was done before
Use of React hooks correctly
Consistent use of React hooks
When asked to change something, only change that. Do not add extra functionality or try to refactor unless asked
when asked to add functinality do not remove tailwind classes or change the syling. Unless specified
Dont add explicit return types unless necesary. Is better to let typescript infer the type when possible
When asked to install a library or create a new file. everything inside the client folder. forget about the server folder. Don't install things on the root. New files should be on client/src/
We are going to be using the testing library Jest and React Testing Library. Test files should be alongside the source files, do not use a different test folder

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React TypeScript Tailwind CSS .cursorrules prompt file

lemi

NEW

Hono Bun TypeScript JSX Tailwind CSS .cursorrules prompt file

Main technologies/frameworks used:

Hono - Fast and lightweight web framework for Node.js
Bun - Ultra-fast JavaScript runtime
TypeScript - Static typing for JavaScript
React JSX - Declarative UI components

Code style/structure:

Use TypeScript for type safety
Component file names are PascalCase
Variable and function names are camelCase
Indent using 2 spaces
Export components and functions
Destructure props in components
Avoid giant components - break into reusable pieces
Wrap components in React.memo for performance

Naming conventions:

Components are named like MyComponent
Component files are MyComponent.tsx
Hooks are named useMyHook
Types are named MyType
Interfaces are named IMyInterface

UI/styling:

Use Tailwind CSS for styling
Avoid inline styles
Break into Layout, Page, Component structure
Stick to existing color palette

Syntax/formatting:

Semicolons for statements
Prefer arrow functions over anonymous functions
Use async/await over promises
Multi-line JSX elements
Logical operator line breaks

Performance:

Use React.memo on components
Virtualize long lists
Paginate API calls
Debounce rapidly firing events
Profile with dev tools before optimizing

Let me know if any additional rules would be helpful!

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Hono Bun TypeScript JSX Tailwind CSS .cursorrules prompt file

dillon.zip

NEW

Svelte 5 SvelteKit 2 .cursorrules prompt file

I'm using svelte 5 instead of svelte 4 here is an overview of the changes.

Overview

Svelte 5 introduces runes, a set of advanced primitives for controlling reactivity. The runes replace certain non-runes features and provide more explicit control over state and effects.

$state

Purpose: Declare reactive state.
Usage:

`<script>`let count = $state(0);`</script>`

Replaces: Top-level let declarations in non-runes mode.
Class Fields:

class Todo {	done = $state(false);	text = $state();	constructor(text) {		this.text = text;	}}

Deep Reactivity: Only plain objects and arrays become deeply reactive.

$state.raw

Purpose: Declare state that cannot be mutated, only reassigned.
Usage:

`<script>`let numbers = $state.raw([1, 2, 3]);`</script>`

Performance: Improves with large arrays and objects.

$state.snapshot

Purpose: Take a static snapshot of $state.
Usage:

`<script>`	let counter = $state({ count: 0 });	function onClick() {		console.log($state.snapshot(counter));	}`</script>`

$derived

Purpose: Declare derived state.
Usage:

`<script>`let count = $state(0); let doubled = $derived(count * 2);`</script>`

Replaces: Reactive variables computed using $: in non-runes mode.

$derived.by

Purpose: Create complex derivations with a function.
Usage:

`<script>`	let numbers = $state([1, 2, 3]); let total = $derived.by(() => numbers.reduce((a, b) => a + b,	0));`</script>`

$effect

Purpose: Run side-effects when values change.
Usage:

`<script>`	let size = $state(50);	let color = $state('#ff3e00');	$effect(() => {		const context = canvas.getContext('2d');		context.clearRect(0, 0, canvas.width, canvas.height);		context.fillStyle = color;		context.fillRect(0, 0, size, size);	});`</script>`

Replacements: $effect replaces a substantial part of $: {} blocks triggering side-effects.

$effect.pre

Purpose: Run code before the DOM updates.
Usage:

`<script>`	$effect.pre(() =>{' '}	{		// logic here	}	);`</script>`

Replaces: beforeUpdate.

$effect.tracking

Purpose: Check if code is running inside a tracking context.
Usage:

`<script>`console.log('tracking:', $effect.tracking());`</script>`

$props

Purpose: Declare component props.
Usage:

`<script>`let {(prop1, prop2)} = $props();`</script>`

Replaces: export let syntax for declaring props.

$bindable

Purpose: Declare bindable props.
Usage:

`<script>`let {(bindableProp = $bindable('fallback'))} = $props();`</script>`

$inspect

Purpose: Equivalent to console.log but re-runs when its argument changes.
Usage:

`<script>`let count = $state(0); $inspect(count);`</script>`

$host

Purpose: Retrieve the this reference of the custom element.
Usage:

`<script>`	function greet(greeting) {		$host().dispatchEvent(new CustomEvent('greeting', { detail: greeting }));	}`</script>`

Note: Only available inside custom element components on the client-side.

Overview of snippets in svelte 5

Snippets, along with render tags, help create reusable chunks of markup inside your components, reducing duplication and enhancing maintainability.

Snippets Usage

Definition: Use the #snippet syntax to define reusable markup sections.
Basic Example:

{#snippet figure(image)}	`<figure>`		`<img src={image.src} alt={image.caption} width={image.width} height={image.height} />`		`<figcaption>`{image.caption}`</figcaption>`	`</figure>`{/snippet}

Invocation: Render predefined snippets with @render:

{@render figure(image)}

Destructuring Parameters: Parameters can be destructured for concise usage:

{#snippet figure({ src, caption, width, height })}	`<figure>`		`<img alt={caption} {src} {width} {height} />`		`<figcaption>`{caption}`</figcaption>`	`</figure>`{/snippet}

Snippet Scope

Scope Rules: Snippets have lexical scoping rules; they are visible to everything in the same lexical scope:

`<div>`	{#snippet x()}		{#snippet y()}...{/snippet}		`<!-- valid usage -->`		{@render y()}	{/snippet}	`<!-- invalid usage -->`	{@render y()}`</div>``<!-- invalid usage -->`{@render x()}

Recursive References: Snippets can self-reference or reference other snippets:

{#snippet blastoff()}	`<span>`🚀`</span>`{/snippet}{#snippet countdown(n)}	{#if n > 0}		`<span>`{n}...`</span>`		{@render countdown(n - 1)}	{:else}		{@render blastoff()}	{/if}{/snippet}{@render countdown(10)}

Passing Snippets to Components

Direct Passing as Props:

`<script>`	import Table from './Table.svelte';	const fruits = [{ name: 'apples', qty: 5, price: 2 }, ...];`</script>`{#snippet header()}	`<th>`fruit`</th>`	`<th>`qty`</th>`	`<th>`price`</th>`	`<th>`total`</th>`{/snippet}{#snippet row(fruit)}	`<td>`{fruit.name}`</td>`	`<td>`{fruit.qty}`</td>`	`<td>`{fruit.price}`</td>`	`<td>`{fruit.qty * fruit.price}`</td>`{/snippet}`<Table data={fruits} {header} {row} />`

Implicit Binding:

`<table data="{fruits}">`	{#snippet header()}	`<th>`fruit`</th>`	`<th>`qty`</th>`	`<th>`price`</th>`	`<th>`total`</th>`	{/snippet} {#snippet row(fruit)}	`<td>`{fruit.name}`</td>`	`<td>`{fruit.qty}`</td>`	`<td>`{fruit.price}`</td>`	`<td>`{fruit.qty * fruit.price}`</td>`	{/snippet}`</table>`

Children Snippet: Non-snippet content defaults to the children snippet:

`<table data="{fruits}">`	`<th>`fruit`</th>`	`<th>`qty`</th>`	`<th>`price`</th>`	`<th>`total`</th>`	`<!-- additional content -->``</table>``<script>`	let { data, children, row } = $props();`</script>``<table>`	`<thead>`		`<tr>`			{@render children()}		`</tr>`	`</thead>`	`<!-- table body -->``</table>`

Avoid Conflicts: Do not use a prop named children if also providing content inside the component.

Typing Snippets

TypeScript Integration:

`<script lang="ts">`	import type { Snippet } from 'svelte';	let { data, children, row }: {		data: any[];		children: Snippet;		row: Snippet`<[any]>`;	} = $props();`</script>`

Generics for Improved Typing:

`<script lang="ts" generics="T">`	import type { Snippet } from 'svelte';	let { data, children, row }: {		data: T[];		children: Snippet;		row: Snippet`<[T]>`;	} = $props();`</script>`

Creating Snippets Programmatically

Advanced Use: Create snippets programmatically using createRawSnippet where necessary.

Snippets and Slots

Mixing with Slots: Slots are deprecated but still work. Snippets provide more flexibility and power.
Custom Elements: Continue using <slot /> for custom elements as usual.

Sure! Here are the succinct instructions for handling Event Handlers in Svelte 5, tailored for the AI-integrated code editor to help it understand and utilize these features effectively.

Custom Instructions for Svelte 5 Event Handlers in Cursor AI

Overview

In Svelte 5, event handlers are treated as properties, simplifying their use and integrating them more closely with the rest of the properties in the component.

Basic Event Handlers

Declaration: Use properties to attach event handlers.

`<script>`	let count = $state(0);`</script>``<button onclick={() =>` count++}>	clicks: {count}`</button>`

Shorthand Syntax:

`<script>`	let count = $state(0);	function handleClick() {		count++;	}`</script>``<button {handleClick}>`	clicks: {count}`</button>`

Deprecation: The traditional on: directive is deprecated.

Component Events

Replacing createEventDispatcher: Components should accept callback props instead of using createEventDispatcher.

`<script>`	import Pump from './Pump.svelte';	let size = $state(15);	let burst = $state(false);	function reset() {		size = 15;		burst = false;	}`</script>``<Pump	inflate={(power) =>` { size += power; if (size > 75) burst = true; }}	deflate={(power) => { if (size > 0) size -= power; }}/>{#if burst}	`<button onclick={reset}>`new balloon`</button>`	`<span class="boom">`💥`</span>`{:else}	`<span class="balloon" style="scale: {0.01 * size}">` 🎈 `</span>`{/if}

Bubbling Events

Accept Callback Props:

`<script>`	let { onclick, children } = $props();`</script>``<button {onclick}>`	{@render children()}`</button>`

Spreading Props:

`<script>`	let { children, ...props } = $props();`</script>``<button {...props}>`	{@render children()}`</button>`

Event Modifiers

Avoiding Modifiers: Modifiers like |once, |preventDefault, etc., are not supported. Use wrapper functions instead.
Example Wrapper Functions:

`<script>`	function once(fn) {		return function (event) {			if (fn) fn.call(this, event);			fn = null;		};	}	function preventDefault(fn) {		return function (event) {			event.preventDefault();			fn.call(this, event);		};	}`</script>``<button onclick={once(preventDefault(handler))}>`...`</button>`

Special Modifiers: For capture:

`<button onclickcapture={...}>`...`</button>`

Multiple Event Handlers

Combining Handlers: Instead of using multiple handlers, combine them into one.

`<button	onclick={(e) =>` {		handlerOne(e);		handlerTwo(e);	}}>	...`</button>`

examples old vs new

Counter Example

Svelte 4 vs. Svelte 5:
Before:
```html
<script>
let count = 0;
$: double = count * 2;
$: {
if (count > 10) alert('Too high!');
}
</script>
<button on:click="{()" ="">count++}> {count} / {double}</button>
```
After:
```html
<script>
let count = $state(0);
let double = $derived(count * 2);
$effect(() => {
if (count > 10) alert('Too high!');
});
</script>
<button onclick="{()" ="">count++}> {count} / {double}</button>
```

Tracking Dependencies

Svelte 4 vs. Svelte 5:
Before:
```html
<script>
let a = 0;
let b = 0;
$: sum = add(a, b);
function add(x, y) {
return x + y;
}
</script>
<button on:click="{()" ="">a++}>a++</button>
<button on:click="{()" ="">b++}>b++</button>
<p>{a} + {b} = {sum}</p>
```
After:
```html
<script>
let a = $state(0);
let b = $state(0);
let sum = $derived(add());
function add() {
return a + b;
}
</script>
<button onclick="{()" ="">a++}>a++</button>
<button onclick="{()" ="">b++}>b++</button>
<p>{a} + {b} = {sum}</p>
```

Untracking Dependencies

Svelte 4 vs. Svelte 5:
Before:
```html
<script>
let a = 0;
let b = 0;
$: sum = a + noTrack(b);
function noTrack(value) {
return value;
}
</script>
<button on:click="{()" ="">a++}>a++</button>
<button on:click="{()" ="">b++}>b++</button>
<p>{a} + {b} = {sum}</p>
```
After:
```html
<script>
import { untrack } from 'svelte';
let a = $state(0);
let b = $state(0);
let sum = $derived(add());
function add() {
return a + untrack(() => b);
}
</script>
<button onclick="{()" ="">a++}>a++</button>
<button onclick="{()" ="">b++}>b++</button>
<p>{a} + {b} = {sum}</p>
```

Simple Component Props

Svelte 5:
```html
<script>
let { count = 0 } = $props();
</script>
{count}
```

Advanced Component Props

Svelte 5:
```html
<script>
let { class: classname, ...others } = $props();
</script>
<pre class="{classname}">
{JSON.stringify(others)}
</pre>
```

Autoscroll Example

Svelte 4 vs. Svelte 5:
Before:
```html
<script>
import { tick, beforeUpdate } from 'svelte';
let theme = 'dark';
let messages = [];
let viewport;
let updatingMessages = false;
beforeUpdate(() => {
if (updatingMessages) {
const autoscroll =
viewport && viewport.offsetHeight + viewport.scrollTop > viewport.scrollHeight - 50;
if (autoscroll) {
tick().then(() => viewport.scrollTo(0, viewport.scrollHeight));
}
}
});
function handleKeydown(event) {
if (event.key === 'Enter') {
const text = event.target.value;
if (text) {
messages = [...messages, text];
updatingMessages = true;
event.target.value = '';
}
}
}
function toggle() {
theme = theme === 'dark' ? 'light' : 'dark';
}
</script>
<div class:dark="{theme" ="" ="" ="dark" }>
<div bind:this="{viewport}">
{#each messages as message}
<p>{message}</p>
{/each}
</div>
<input on:keydown="{handleKeydown}" />
<button on:click="{toggle}">Toggle dark mode</button>
</div>
```
After:
```html
<script>
import { tick } from 'svelte';
let theme = $state('dark');
let messages = $state([]);
let viewport;
$effect.pre(() => {
messages;
const autoscroll =
viewport && viewport.offsetHeight + viewport.scrollTop > viewport.scrollHeight - 50;
if (autoscroll) {
tick().then(() => viewport.scrollTo(0, viewport.scrollHeight));
}
});
function handleKeydown(event) {
if (event.key === 'Enter') {
const text = event.target.value;
if (text) {
messages = [...messages, text];
event.target.value = '';
}
}
}
function toggle() {
theme = theme === 'dark' ? 'light' : 'dark';
}
</script>
<div class:dark="{theme" ="" ="" ="dark" }>
<div bind:this="{viewport}">
{#each messages as message}
<p>{message}</p>
{/each}
</div>
<input onkeydown="{handleKeydown}" />
<button onclick="{toggle}">Toggle dark mode</button>
</div>
```

Forwarding Events

Svelte 5:
```html
<script>
let { ...props } = $props();
</script>
<button {...props}>a button</button>
```

Passing UI Content to a Component

Passing content using snippets:
```html

<script>
import Button from './Button.svelte';
</script>
<button>{#snippet children(prop)} click {prop} {/snippet}</button>

<script>
let { children } = $props();
</script>
<button>{@render children("some value")}</button>
```

I'm also using sveltekit 2 which also has some changes I'd like you to keep in mind

Redirect and Error Handling

In SvelteKit 2, it is no longer necessary to throw the results of error(...) and redirect(...). Simply calling them is sufficient.

SvelteKit 1:

import { error } from '@sveltejs/kit';function load() {	throw error(500, 'something went wrong');}

SvelteKit 2:

import { error } from '@sveltejs/kit';function load() {	error(500, 'something went wrong');}

Distinguish Errors:
Use isHttpError and isRedirect to differentiate known errors from unexpected ones.

import { isHttpError, isRedirect } from '@sveltejs/kit';try {	// some code} catch (err) {	if (isHttpError(err) || isRedirect(err)) {		// handle error	}}

Cookies now require a specified path when set, deleted, or serialized.

SvelteKit 1:

export function load({ cookies }) {	cookies.set(name, value);	return { response };}

SvelteKit 2:

export function load({ cookies }) {	cookies.set(name, value, { path: '/' });	return { response };}

Top-Level Promise Handling

Promises in load functions are no longer awaited automatically.

Single Promise:

SvelteKit 1:

export function load({ fetch }) {    return {        response: fetch(...).then(r => r.json())    };}

SvelteKit 2:

export async function load({ fetch }) {    const response = await fetch(...).then(r => r.json());    return { response };}

Multiple Promises:

SvelteKit 1:

export function load({ fetch }) {    return {        a: fetch(...).then(r => r.json()),        b: fetch(...).then(r => r.json())    };}

SvelteKit 2:

export async function load({ fetch }) {    const [a, b] = await Promise.all([        fetch(...).then(r => r.json()),        fetch(...).then(r => r.json())    ]);    return { a, b };}

`goto` Changes

goto(...) no longer accepts external URLs. Use window.location.href = url for external navigation.

Relative Paths Default

Paths are now relative by default, ensuring portability across different environments. The paths.relative config option manages this behavior.

Deprecated Settings and Functions

Server Fetches are no longer trackable.
preloadCode Arguments: Must be prefixed with the base path.
resolvePath Replacement: Use resolveRoute instead.

import { resolveRoute } from '$app/paths';const path = resolveRoute('/blog/[slug]', { slug: 'hello' });

Improved Error Handling

Errors trigger the handleError hook with status and message properties for better discernment.

Dynamic Environment Variables

Dynamic environment variables cannot be used during prerendering. Use static modules instead.

`use:enhance` Callback Changes

The properties form and data have been removed from use:enhance callbacks, replaced by formElement and formData.

Forms with File Inputs

Forms containing <input type="file"> must use enctype="multipart/form-data".

With these adjusted guidelines, your AI can now generate SvelteKit 2 code accurately while considering the migration changes.

stack:

Svelte 5

Sveltekit 2

TypeScript

Svelte 5 SvelteKit 2 .cursorrules prompt file

Sumanth Chinthagunta

NEW

NodeJS React TailwindCSS Guide .cursorrules prompt file

stack:

NodeJS React TailwindCSS Guide .cursorrules prompt file

Silas Reinagel

NEW

Svelte 5 vs Svelte 4 .cursorrules prompt file

I'm using svelte 5 instead of svelte 4 here is an overview of the changes.

Overview

Svelte 5 introduces runes, a set of advanced primitives for controlling reactivity. The runes replace certain non-runes features and provide more explicit control over state and effects.

$state

Purpose: Declare reactive state.
Usage:

`<script>`let count = $state(0);`</script>`

Replaces: Top-level let declarations in non-runes mode.
Class Fields:

class Todo {	done = $state(false);	text = $state();	constructor(text) {		this.text = text;	}}

Deep Reactivity: Only plain objects and arrays become deeply reactive.

$state.raw

Purpose: Declare state that cannot be mutated, only reassigned.
Usage:

`<script>`let numbers = $state.raw([1, 2, 3]);`</script>`

Performance: Improves with large arrays and objects.

$state.snapshot

Purpose: Take a static snapshot of $state.
Usage:

`<script>`	let counter = $state({ count: 0 });	function onClick() {		console.log($state.snapshot(counter));	}`</script>`

$derived

Purpose: Declare derived state.
Usage:

`<script>`let count = $state(0); let doubled = $derived(count * 2);`</script>`

Replaces: Reactive variables computed using $: in non-runes mode.

$derived.by

Purpose: Create complex derivations with a function.
Usage:

`<script>`	let numbers = $state([1, 2, 3]); let total = $derived.by(() => numbers.reduce((a, b) => a + b,	0));`</script>`

$effect

Purpose: Run side-effects when values change.
Usage:

`<script>`	let size = $state(50);	let color = $state('#ff3e00');	$effect(() => {		const context = canvas.getContext('2d');		context.clearRect(0, 0, canvas.width, canvas.height);		context.fillStyle = color;		context.fillRect(0, 0, size, size);	});`</script>`

Replacements: $effect replaces a substantial part of $: {} blocks triggering side-effects.

$effect.pre

Purpose: Run code before the DOM updates.
Usage:

`<script>`	$effect.pre(() =>{' '}	{		// logic here	}	);`</script>`

Replaces: beforeUpdate.

$effect.tracking

Purpose: Check if code is running inside a tracking context.
Usage:

`<script>`console.log('tracking:', $effect.tracking());`</script>`

$props

Purpose: Declare component props.
Usage:

`<script>`let {(prop1, prop2)} = $props();`</script>`

Replaces: export let syntax for declaring props.

$bindable

Purpose: Declare bindable props.
Usage:

`<script>`let {(bindableProp = $bindable('fallback'))} = $props();`</script>`

$inspect

Purpose: Equivalent to console.log but re-runs when its argument changes.
Usage:

`<script>`let count = $state(0); $inspect(count);`</script>`

$host

Purpose: Retrieve the this reference of the custom element.
Usage:

`<script>`	function greet(greeting) {		$host().dispatchEvent(new CustomEvent('greeting', { detail: greeting }));	}`</script>`

Note: Only available inside custom element components on the client-side.

Overview of snippets in svelte 5

Snippets, along with render tags, help create reusable chunks of markup inside your components, reducing duplication and enhancing maintainability.

Snippets Usage

Definition: Use the #snippet syntax to define reusable markup sections.
Basic Example:

{#snippet figure(image)}	`<figure>`		`<img src={image.src} alt={image.caption} width={image.width} height={image.height} />`		`<figcaption>`{image.caption}`</figcaption>`	`</figure>`{/snippet}

Invocation: Render predefined snippets with @render:

{@render figure(image)}

Destructuring Parameters: Parameters can be destructured for concise usage:

{#snippet figure({ src, caption, width, height })}	`<figure>`		`<img alt={caption} {src} {width} {height} />`		`<figcaption>`{caption}`</figcaption>`	`</figure>`{/snippet}

Snippet Scope

Scope Rules: Snippets have lexical scoping rules; they are visible to everything in the same lexical scope:

`<div>`	{#snippet x()}		{#snippet y()}...{/snippet}		`<!-- valid usage -->`		{@render y()}	{/snippet}	`<!-- invalid usage -->`	{@render y()}`</div>``<!-- invalid usage -->`{@render x()}

Recursive References: Snippets can self-reference or reference other snippets:

{#snippet blastoff()}	`<span>`🚀`</span>`{/snippet}{#snippet countdown(n)}	{#if n > 0}		`<span>`{n}...`</span>`		{@render countdown(n - 1)}	{:else}		{@render blastoff()}	{/if}{/snippet}{@render countdown(10)}

Passing Snippets to Components

Direct Passing as Props:

`<script>`	import Table from './Table.svelte';	const fruits = [{ name: 'apples', qty: 5, price: 2 }, ...];`</script>`{#snippet header()}	`<th>`fruit`</th>`	`<th>`qty`</th>`	`<th>`price`</th>`	`<th>`total`</th>`{/snippet}{#snippet row(fruit)}	`<td>`{fruit.name}`</td>`	`<td>`{fruit.qty}`</td>`	`<td>`{fruit.price}`</td>`	`<td>`{fruit.qty * fruit.price}`</td>`{/snippet}`<Table data={fruits} {header} {row} />`

Implicit Binding:

`<table data="{fruits}">`	{#snippet header()}	`<th>`fruit`</th>`	`<th>`qty`</th>`	`<th>`price`</th>`	`<th>`total`</th>`	{/snippet} {#snippet row(fruit)}	`<td>`{fruit.name}`</td>`	`<td>`{fruit.qty}`</td>`	`<td>`{fruit.price}`</td>`	`<td>`{fruit.qty * fruit.price}`</td>`	{/snippet}`</table>`

Children Snippet: Non-snippet content defaults to the children snippet:

`<table data="{fruits}">`	`<th>`fruit`</th>`	`<th>`qty`</th>`	`<th>`price`</th>`	`<th>`total`</th>`	`<!-- additional content -->``</table>``<script>`	let { data, children, row } = $props();`</script>``<table>`	`<thead>`		`<tr>`			{@render children()}		`</tr>`	`</thead>`	`<!-- table body -->``</table>`

Avoid Conflicts: Do not use a prop named children if also providing content inside the component.

Typing Snippets

TypeScript Integration:

`<script lang="ts">`	import type { Snippet } from 'svelte';	let { data, children, row }: {		data: any[];		children: Snippet;		row: Snippet`<[any]>`;	} = $props();`</script>`

Generics for Improved Typing:

`<script lang="ts" generics="T">`	import type { Snippet } from 'svelte';	let { data, children, row }: {		data: T[];		children: Snippet;		row: Snippet`<[T]>`;	} = $props();`</script>`

Creating Snippets Programmatically

Advanced Use: Create snippets programmatically using createRawSnippet where necessary.

Snippets and Slots

Mixing with Slots: Slots are deprecated but still work. Snippets provide more flexibility and power.
Custom Elements: Continue using <slot /> for custom elements as usual.

Sure! Here are the succinct instructions for handling Event Handlers in Svelte 5, tailored for the AI-integrated code editor to help it understand and utilize these features effectively.

Custom Instructions for Svelte 5 Event Handlers in Cursor AI

Overview

In Svelte 5, event handlers are treated as properties, simplifying their use and integrating them more closely with the rest of the properties in the component.

Basic Event Handlers

Declaration: Use properties to attach event handlers.

`<script>`	let count = $state(0);`</script>``<button onclick={() =>` count++}>	clicks: {count}`</button>`

Shorthand Syntax:

`<script>`	let count = $state(0);	function handleClick() {		count++;	}`</script>``<button {handleClick}>`	clicks: {count}`</button>`

Deprecation: The traditional on: directive is deprecated.

Component Events

Replacing createEventDispatcher: Components should accept callback props instead of using createEventDispatcher.

`<script>`	import Pump from './Pump.svelte';	let size = $state(15);	let burst = $state(false);	function reset() {		size = 15;		burst = false;	}`</script>``<Pump	inflate={(power) =>` { size += power; if (size > 75) burst = true; }}	deflate={(power) => { if (size > 0) size -= power; }}/>{#if burst}	`<button onclick={reset}>`new balloon`</button>`	`<span class="boom">`💥`</span>`{:else}	`<span class="balloon" style="scale: {0.01 * size}">` 🎈 `</span>`{/if}

Bubbling Events

Accept Callback Props:

`<script>`	let { onclick, children } = $props();`</script>``<button {onclick}>`	{@render children()}`</button>`

Spreading Props:

`<script>`	let { children, ...props } = $props();`</script>``<button {...props}>`	{@render children()}`</button>`

Event Modifiers

Avoiding Modifiers: Modifiers like |once, |preventDefault, etc., are not supported. Use wrapper functions instead.
Example Wrapper Functions:

`<script>`	function once(fn) {		return function (event) {			if (fn) fn.call(this, event);			fn = null;		};	}	function preventDefault(fn) {		return function (event) {			event.preventDefault();			fn.call(this, event);		};	}`</script>``<button onclick={once(preventDefault(handler))}>`...`</button>`

Special Modifiers: For capture:

`<button onclickcapture={...}>`...`</button>`

Multiple Event Handlers

Combining Handlers: Instead of using multiple handlers, combine them into one.

`<button	onclick={(e) =>` {		handlerOne(e);		handlerTwo(e);	}}>	...`</button>`

examples old vs new

Counter Example

Svelte 4 vs. Svelte 5:
Before:
```html
<script>
let count = 0;
$: double = count * 2;
$: {
if (count > 10) alert('Too high!');
}
</script>
<button on:click="{()" ="">count++}> {count} / {double}</button>
```
After:
```html
<script>
let count = $state(0);
let double = $derived(count * 2);
$effect(() => {
if (count > 10) alert('Too high!');
});
</script>
<button onclick="{()" ="">count++}> {count} / {double}</button>
```

Tracking Dependencies

Svelte 4 vs. Svelte 5:
Before:
```html
<script>
let a = 0;
let b = 0;
$: sum = add(a, b);
function add(x, y) {
return x + y;
}
</script>
<button on:click="{()" ="">a++}>a++</button>
<button on:click="{()" ="">b++}>b++</button>
<p>{a} + {b} = {sum}</p>
```
After:
```html
<script>
let a = $state(0);
let b = $state(0);
let sum = $derived(add());
function add() {
return a + b;
}
</script>
<button onclick="{()" ="">a++}>a++</button>
<button onclick="{()" ="">b++}>b++</button>
<p>{a} + {b} = {sum}</p>
```

Untracking Dependencies

Svelte 4 vs. Svelte 5:
Before:
```html
<script>
let a = 0;
let b = 0;
$: sum = a + noTrack(b);
function noTrack(value) {
return value;
}
</script>
<button on:click="{()" ="">a++}>a++</button>
<button on:click="{()" ="">b++}>b++</button>
<p>{a} + {b} = {sum}</p>
```
After:
```html
<script>
import { untrack } from 'svelte';
let a = $state(0);
let b = $state(0);
let sum = $derived(add());
function add() {
return a + untrack(() => b);
}
</script>
<button onclick="{()" ="">a++}>a++</button>
<button onclick="{()" ="">b++}>b++</button>
<p>{a} + {b} = {sum}</p>
```

Simple Component Props

Svelte 5:
```html
<script>
let { count = 0 } = $props();
</script>
{count}
```

Advanced Component Props

Svelte 5:
```html
<script>
let { class: classname, ...others } = $props();
</script>
<pre class="{classname}">
{JSON.stringify(others)}
</pre>
```

Autoscroll Example

Svelte 4 vs. Svelte 5:
Before:
```html
<script>
import { tick, beforeUpdate } from 'svelte';
let theme = 'dark';
let messages = [];
let viewport;
let updatingMessages = false;
beforeUpdate(() => {
if (updatingMessages) {
const autoscroll =
viewport && viewport.offsetHeight + viewport.scrollTop > viewport.scrollHeight - 50;
if (autoscroll) {
tick().then(() => viewport.scrollTo(0, viewport.scrollHeight));
}
}
});
function handleKeydown(event) {
if (event.key === 'Enter') {
const text = event.target.value;
if (text) {
messages = [...messages, text];
updatingMessages = true;
event.target.value = '';
}
}
}
function toggle() {
theme = theme === 'dark' ? 'light' : 'dark';
}
</script>
<div class:dark="{theme" ="" ="" ="dark" }>
<div bind:this="{viewport}">
{#each messages as message}
<p>{message}</p>
{/each}
</div>
<input on:keydown="{handleKeydown}" />
<button on:click="{toggle}">Toggle dark mode</button>
</div>
```
After:
```html
<script>
import { tick } from 'svelte';
let theme = $state('dark');
let messages = $state([]);
let viewport;
$effect.pre(() => {
messages;
const autoscroll =
viewport && viewport.offsetHeight + viewport.scrollTop > viewport.scrollHeight - 50;
if (autoscroll) {
tick().then(() => viewport.scrollTo(0, viewport.scrollHeight));
}
});
function handleKeydown(event) {
if (event.key === 'Enter') {
const text = event.target.value;
if (text) {
messages = [...messages, text];
event.target.value = '';
}
}
}
function toggle() {
theme = theme === 'dark' ? 'light' : 'dark';
}
</script>
<div class:dark="{theme" ="" ="" ="dark" }>
<div bind:this="{viewport}">
{#each messages as message}
<p>{message}</p>
{/each}
</div>
<input onkeydown="{handleKeydown}" />
<button onclick="{toggle}">Toggle dark mode</button>
</div>
```

Forwarding Events

Svelte 5:
```html
<script>
let { ...props } = $props();
</script>
<button {...props}>a button</button>
```

Passing UI Content to a Component

Passing content using snippets:
```html

<script>
import Button from './Button.svelte';
</script>
<button>{#snippet children(prop)} click {prop} {/snippet}</button>

<script>
let { children } = $props();
</script>
<button>{@render children("some value")}</button>
```

stack:

Svelte 5 vs Svelte 4 .cursorrules prompt file

Adam Shand

NEW

Solidity TypeScript .cursorrules prompt file

You are an expert in Solidity, TypeScript, Node.js, postgres, Sqlite3, and Prisma.

Key Principles

Write concise, technical responses with accurate TypeScript examples.
Use functional, declarative programming. Avoid classes.
Prefer iteration and modularization over duplication.
Use descriptive variable names with auxiliary verbs (e.g., isLoading).
Use lowercase with dashes for directories (e.g., components/auth-wizard).
Favor named exports for components.
Use the Receive an Object, Return an Object (RORO) pattern.

JavaScript/TypeScript
Use "function" keyword for pure functions. Omit semicolons.
Use TypeScript for all code. Prefer interfaces over types. Avoid enums, use maps.
File structure: Exported component, subcomponents, helpers, static content, types.
Avoid unnecessary curly braces in conditional statements.
For single-line statements in conditionals, omit curly braces.
Use concise, one-line syntax for simple conditional statements (e.g., if (condition) doSomething()).

Error Handling and Validation
Prioritize error handling and edge cases:
Handle errors and edge cases at the beginning of functions.
Use early returns for error conditions to avoid deeply nested if statements.
Place the happy path last in the function for improved readability.
Avoid unnecessary else statements; use if-return pattern instead.
Use guard clauses to handle preconditions and invalid states early.
Implement proper error logging and user-friendly error messages.
Consider using custom error types or error factories for consistent error handling.

stack:

Solidity TypeScript .cursorrules prompt file

Devcon

NEW

React Components Creation .cursorrules prompt file

# Cursor Rules

## Whenever you need a React component

1. Carefully consider the component's purpose, functionality, and design
2. Think slowly, step by step, and outline your reasoning
3. Check if a similar component already exists in any of the following locations
  1. packages/ui/src/components
  2. apps/spa/src/components
4. If it doesn't exist, generate a detailed prompt for the component, including:
  - Component name and purpose
  - Desired props and their types
  - Any specific styling or behavior requirements
  - Mention of using Tailwind CSS for styling
  - Request for TypeScript usage
5. URL encode the prompt.
6. Create a clickable link in this format:
  [ComponentName](https://v0.dev/chat?q={encoded_prompt})
7. After generating, adapt the component to fit our project structure:
  - Import
   - common shadcn/ui components from <ui_package_alias>@repo/ui/components/ui/</ui_package_alias>
   - app specific components from <app_package_alias>@/components</app_package_alias>
  - Ensure it follows our existing component patterns
  - Add any necessary custom logic or state management

Example prompt template:
"Create a React component named {ComponentName} using TypeScript and Tailwind CSS.
It should {description of functionality}. Props should include {list of props with types}.
The component should {any specific styling or behavior notes}. Please provide the full component code."

Remember to replace placeholders like <ui_package_path> and <app_package_alias> with the actual values used in your project.

stack:

React

Tailwind CSS

TypeScript