explain-concept

name	explain-concept
description	Use when the user asks "what is X?", "how does X work?", or is confused about a JavaScript concept, syntax, built-in method, or API. Defines the concept in plain English, provides a minimal code example, and lists common beginner gotchas.
argument-hint	[concept name, e.g. "closures", "Promise.all", "event delegation"]

Explain Concept Skill

Use this skill when the user is stuck on a specific syntax, built-in object, or API method.

Procedure:

1. Define: Explain the concept in plain English in no more than 2 sentences.
2. Demonstrate: Provide a bare-minimum, highly readable code example demonstrating how it is used.
3. Contextualize: Provide a brief real-world scenario where a developer would actually need this (e.g., "You would use Promise.all when fetching data from three independent APIs at once").
4. Warn: List 1-2 common "gotchas" or mistakes beginners make when using this concept.