next-shared-state/dist/urlTransfer.js

Enhanced state sharing for Next.js with IndexedDB persistence and URL data transfer between pages and components.

// src/urlTransfer.ts
export class URLTransfer {
    static encode(data) {
        try {
            const compressed = btoa(encodeURIComponent(JSON.stringify(data)));
            return compressed;
        }
        catch (error) {
            console.warn("URLTransfer encode failed:", error);
            return "";
        }
    }
    static decode(encoded) {
        try {
            return JSON.parse(decodeURIComponent(atob(encoded)));
        }
        catch (error) {
            console.warn("URLTransfer decode failed:", error);
            return null;
        }
    }
    static createTransferURL(path, data) {
        const encoded = this.encode(data);
        if (!encoded)
            return path;
        const separator = path.includes("?") ? "&" : "?";
        return `${path}${separator}__ndata=${encoded}`;
    }
    static extractFromURL() {
        if (typeof window === "undefined")
            return null;
        try {
            const urlParams = new URLSearchParams(window.location.search);
            const encodedData = urlParams.get("__ndata");
            if (encodedData) {
                // Clean URL after extraction
                const newUrl = window.location.pathname + window.location.hash;
                window.history.replaceState({}, "", newUrl);
                return this.decode(encodedData);
            }
        }
        catch (error) {
            console.warn("URLTransfer extraction failed:", error);
        }
        return null;
    }
}