functions

name	functions
description	Advanced function patterns including declaration styles, closures, scope chains, hoisting, and this binding. Master function composition and advanced techniques.
sasmp_version	1.3.0
bonded_agent	02-functions-scope
bond_type	PRIMARY_BOND
skill_type	reference
response_format	code_first
max_tokens	1500
parameter_validation	{"required":["topic"],"optional":["pattern_type"]}
retry_logic	{"on_ambiguity":"ask_clarification","fallback":"show_common_patterns"}
observability	{"entry_log":"Functions skill activated","exit_log":"Function reference provided"}

Functions & Scope Skill

Quick Reference Card

Function Styles

// Declaration (hoisted)
function greet(name) { return `Hello, ${name}!`; }

// Expression (not hoisted)
const greet = function(name) { return `Hello, ${name}!`; };

// Arrow (lexical this)
const greet = (name) => `Hello, ${name}!`;
const greet = name => `Hello, ${name}!`;  // Single param
const getUser = async (id) => await fetch(`/api/${id}`);

Scope Rules

Global Scope
  └── Function Scope
        └── Block Scope (let/const)

const global = 'accessible everywhere';

function outer() {
  const outerVar = 'accessible in outer + inner';

  function inner() {
    const innerVar = 'only accessible here';
    console.(, outerVar, innerVar); 
  }
}