@maximai/maxim-js-langchain/src/lib/expiringKeyValueStore.js

This is the langchain wrapper built for (Maxim JS SDK)[https://www.npmjs.com/package/@maximai/maxim-js].

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
class ExpiringKeyValueStore {
    constructor() {
        this.store = new Map();
    }
    set(key, value, expirySeconds) {
        const expiryTime = Date.now() + expirySeconds * 1000;
        this.store.set(key, [value, expiryTime]);
        this.evictExpired();
    }
    get(key) {
        const entry = this.store.get(key);
        if (entry) {
            const [value, expiryTime] = entry;
            if (Date.now() < expiryTime) {
                return value;
            }
            else {
                this.store.delete(key);
            }
        }
        return null;
    }
    delete(key) {
        this.store.delete(key);
    }
    evictExpired() {
        const currentTime = Date.now();
        const expiredKeys = [];
        this.store.forEach((value, key) => {
            const [, expiryTime] = value;
            if (currentTime >= expiryTime) {
                expiredKeys.push(key);
            }
        });
        expiredKeys.forEach((key) => this.store.delete(key));
    }
}
exports.default = ExpiringKeyValueStore;