Part 1 — 🔒 localStorage (All persistence-related content)

What is localStorage and why use it?

• localStorage saves data in the browser so progress persists after refresh.
• If you buy an item in the shop, it should still be there after reload.
• Your task: study how localStorage is used in existing code and apply it to your feature.

Requirements

• If your feature should persist, integrate localStorage.
• Save on state changes (clicks, buys, upgrades) and load on game start.

Steps (persistence-focused)

1. On load, attempt to read saved state from localStorage.
2. If found, recreate state from JSON; otherwise initialize defaults.
3. On every relevant update, write the new state back to localStorage.

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Example in Code

An example of this is:

cookie.addCookies(-1 * forSaleItemInfo.price);
localStorage.setItem("cookies", this.cookies);
const storedCookies = Number(localStorage.getItem("cookies"));

flowchart TD
    A[🍪 Cookie Button<br/>Click to earn cookies] --> B[Cookies Saved & Displayed<br/>Progress stored in LocalStorage]
    B --> C[🛒 Shop<br/>Spend cookies on upgrades & auto-clickers]
    C --> D[👵 Grandma, 🏭 Factory, 🥭 Temple, 🏦 Bank<br/>Auto-clickers generate cookies per second]
    C --> E[🖱 2X Clicks<br/>Doubles cookies gained per click]
    D --> F[GameLoop<br/>Automatically adds cookies every second]
    E --> B
    F --> B
    D --> G[🎉 Emoji Buddies<br/>Spawn moving emojis for each purchase]