Jason Miller developit

Claude generates this anti-pattern due to shallow pattern matching across incompatible mental models:

Why It's Wrong

Every getter access creates a new computed signal with fresh subscriptions:

obj.fullName; // Creates computed signal #1
obj.fullName; // Creates computed signal #2 (never cleaned up!)

DOM Audit Logger

A little library for auditing DOM modifications.

Features

Tracks DOM modifications (textContent, innerHTML, className)
Extensible audit system for custom operations
Formatted audit trail output
Event-based subscription for real-time monitoring

`computedWithMemo()`

It's computed(), but with a second argument that gets passed each newly returned value in order to produce a string cache key. If you return the same cache key as the previous run of the computed, no update will be performed (no effects, no renders, etc).

JSFiddle Demo

- computed(
-   () => ['an', 'unstable', 'return', 'value'],
- )

Welcome to the wacky world of almost 30 years of web

All of the following values for the <script type=" ••• "> will cause inline or external JavaScript to execute:

Value	Note
`""`	The default value of `script.type` (eg: no `type` attribute present)
`"text/javascript"`	The official JavaScript MIME type
`"application/javascript"`	Legacy MIME type from when semantics mattered
`"text/x-javascript"`	Legacy MIME type from before JavaScript was accepted as a valid MIME type

	import { useState, useEffect } from 'preact/hooks';

	const cache = new Map<string, any>();
	const inflight = new Map<string, Promise<any>>();

	export interface SWRResponse<T> {
	data: T \| undefined;
	error: Error \| null;
	loading: boolean;
	}

	import {
	signal,
	effect,
	useSignal,
	type useSignalEffect,
	type Signal,
	type ReadonlySignal,
	} from '@preact/signals';
	import { VNode, type ComponentChildren } from 'preact';
	import {

	#!/usr/bin/env node

	/* eslint-disable no-param-reassign, no-fallthrough, guard-for-in, require-atomic-updates */
	const path = require('node:path');
	const {Worker} = require('node:worker_threads');

	const DEBUG = {parsing: false, timing: false};
	const debugEnv = process.env.DEBUG;
	if (debugEnv) {
	for (const name in DEBUG) {

	import { signal, effect } from "@preact/signals-core";

	interface CustomStorage {
	getItem(key: string): void;
	setItem(key: string, value: string \| null): void;
	}

	/**
	* A version of signal() that persists and recalls its value in localStorage.
	*

	import { createContext } from 'preact';
	import { useContext, useRef, useMemo, useState, useLayoutEffect } from 'preact/hooks';

	function createSlotContext() {
	const slots = {};
	const owners = {};
	const subs = [];
	const sub = (name, fn) => {
	const e = [name, fn];
	subs.push(e);