Claude says: I'll explain different ways to handle multiple values for a dictionary (object) key in

// Initialize with array
let dict = {
    key1: [value1, value2, value3]
};

// Add values later
dict.key1 = dict.key1 || []; // Create array if it doesn't exist
dict.key1.push(newValue);

// Example:
let users = {
    "team1": ["Alice", "Bob"]
};
users.team1.push("Charlie");  // adds "Charlie" to team1

let dict = {
    key1: new Set()
};
dict.key1.add(value1);
dict.key1.add(value2);

// Example:
let userRoles = {
    "admin": new Set()
};
userRoles.admin.add("read");
userRoles.admin.add("write");