@reown/appkit-siwx/dist/esm/src/storages/LocalStorage.js

The chain agnostic tool to enable authentication for AppKit applications.

/**
 * This storage saves the sessions in the localStorage.
 */
export class LocalStorage {
    constructor(params) {
        this.key = params.key;
    }
    add(session) {
        const sessions = this.getSessions();
        sessions.push(session);
        this.setSessions(sessions);
        return Promise.resolve();
    }
    set(sessions) {
        this.setSessions(sessions);
        return Promise.resolve();
    }
    get(chainId, address) {
        const allSessions = this.getSessions();
        const validSessions = allSessions.filter(session => {
            const isSameChain = session.data.chainId === chainId;
            const isSameAddress = session.data.accountAddress === address;
            const startsAt = session.data.notBefore || session.data.issuedAt;
            if (startsAt && Date.parse(startsAt) > Date.now()) {
                return false;
            }
            const endsAt = session.data.expirationTime;
            if (endsAt && Date.now() > Date.parse(endsAt)) {
                return false;
            }
            return isSameChain && isSameAddress;
        });
        return Promise.resolve(validSessions);
    }
    delete(chainId, address) {
        const sessions = this.getSessions().filter(session => session.data.chainId !== chainId && session.data.accountAddress !== address);
        this.setSessions(sessions);
        return Promise.resolve();
    }
    getSessions() {
        if (typeof localStorage === 'undefined') {
            throw new Error('localStorage not available');
        }
        const stringItem = localStorage.getItem(this.key);
        return stringItem ? JSON.parse(stringItem) : [];
    }
    setSessions(sessions) {
        localStorage.setItem(this.key, JSON.stringify(sessions));
    }
}
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