azure-ad-verify-token/dist/cache.js

Verify JWT issued by Azure Active Directory B2C.

import { getConfig } from './config.js';
/**
 * Public key cache.
 */
const cache = new Map();
/**
 * Get expiry.
 */
function getExpiry() {
    const now = new Date().getTime();
    const config = getConfig();
    return now + config.cacheLifetime;
}
/**
 * Set cache item.
 *
 * @param key Cache item key.
 * @param value Cache item value.
 */
export function setItem(key, value) {
    return cache.set(key, {
        result: Promise.resolve(value),
        expiry: getExpiry(),
    });
}
/**
 * Set deferred cache item.
 *
 * @param key Cache item key.
 */
export function setDeferredItem(key) {
    let done;
    const result = new Promise((resolve) => {
        done = resolve;
    });
    return cache.set(key, {
        result,
        done,
        expiry: getExpiry(),
    });
}
/**
 * Get cache item.
 *
 * @param key Cache item key.
 */
export function getItem(key) {
    const value = cache.get(key);
    const now = new Date().getTime();
    if (!value) {
        return null;
    }
    if (value.expiry < now) {
        // expired
        cache.delete(key);
        return null;
    }
    return value;
}
/**
 * Remove cache item.
 *
 * @param key Cache item key.
 */
export function removeItem(key) {
    return cache.delete(key);
}
/**
 * Clear all items.
 */
export function clear() {
    cache.clear();
}