javascript

javascript
const { z } = require('zod');

const signupSchema = z
  .object({
    email: z
      .string()

Reusable Zod Schema Validation Middleware for Express Signup Routes

express zod validation
by codesnips 3 tabs
javascript
import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
  static targets = ["field"]

  connect() {

Stimulus: autofocus the first invalid field after Turbo update

rails stimulus hotwire
by codesnips 3 tabs
typescript
import React, { createContext, useContext, useEffect, useState, ReactNode } from 'react'

type Theme = 'light' | 'dark'

interface ThemeContextType {
  theme: Theme

Dark mode with Tailwind and localStorage persistence

react tailwind dark-mode
by Maya Patel 3 tabs
css
.confirm-dialog {
  border: none;
  border-radius: 12px;
  padding: 1.5rem;
  max-width: 26rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);

Stimulus: resilient confirmation for destructive actions

rails stimulus hotwire
by codesnips 3 tabs
erb
<div class="layout" data-controller="viewport">
  <%= turbo_frame_tag "master", class: "master-pane" do %>
    <h1>Products</h1>
    <ul class="product-list">
      <% @products.each do |product| %>
        <li>

Turbo Frames: conditional frame navigation for mobile vs desktop

rails hotwire responsive
by codesnips 4 tabs
ruby
class ApplicationController < ActionController::Base
  before_action :authenticate_user!

  rescue_from ActionController::InvalidAuthenticityToken do
    handle_unauthenticated(reason: :csrf)
  end

Turbo Streams: partial page auth failure handling

rails turbo hotwire
by codesnips 3 tabs
javascript
import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
  static targets = ["parent", "child"]
  static values = {
    options: Object,

Stimulus controller for dependent select dropdowns

stimulus javascript forms
by Jordan Lee 2 tabs
javascript
import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
  static targets = ["dialog", "message"]

  connect() {

Custom confirm dialog with Stimulus (better than window.confirm)

rails hotwire stimulus
by codesnips 3 tabs
javascript
const { EventEmitter } = require('events');

const HIGH_WATER_MARK = 1 << 20; // 1 MiB of buffered bytes per client

class SseHub extends EventEmitter {
  constructor() {

Broadcasting Events to Clients with Server-Sent Events on Node's http Module

nodejs sse server-sent-events
by codesnips 3 tabs
javascript
'use strict';

const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));

function backoffDelay(attempt, baseMs, maxDelayMs) {
  const exponential = baseMs * 2 ** attempt;

Retry Failed Async Operations With Exponential Backoff and Jitter in Node.js

nodejs retry backoff
by codesnips 2 tabs
erb
<%= turbo_frame_tag 'modal' %>

Keyboard shortcut “command palette” modal (Hotwire-first)

rails hotwire stimulus
by Henry Kim 3 tabs
javascript
export const required = (msg = 'This field is required') => (value) =>
  value && value.trim() !== '' ? '' : msg;

export const minLength = (n, msg) => (value) =>
  value && value.length >= n ? '' : msg || `Must be at least ${n} characters`;

Field-by-Field Signup Validation with a Reusable useForm Hook in React

react hooks forms
by codesnips 4 tabs