bankcode-bic/dist/libs/cache.browser.js

Convert bank codes from IBAN to BICs, Name of bank. Currently supports only some selected EU countries.

//#region src/libs/cache.browser.ts
const META_KEY = "localcache-meta";
function getMeta(localStorage) {
	const raw = localStorage.getItem(META_KEY);
	if (!raw) return {};
	try {
		return JSON.parse(raw);
	} catch {
		return {};
	}
}
function setMeta(meta, localStorage) {
	localStorage.setItem(META_KEY, JSON.stringify(meta));
}
function clearMeta(localStorage) {
	localStorage.removeItem(META_KEY);
}
async function hashKey(key) {
	const encoder = new TextEncoder();
	const data = encoder.encode(key);
	const hashBuffer = await (globalThis.crypto?.subtle?.digest("SHA-256", data) ?? Promise.resolve(/* @__PURE__ */ new ArrayBuffer(0)));
	const hashArray = Array.from(new Uint8Array(hashBuffer));
	const hashHex = hashArray.map((b) => b.toString(16).padStart(2, "0")).join("");
	return `cache_${hashHex}`;
}
var LocalStorageCache = class {
	localStorage;
	constructor(win) {
		this.localStorage = win?.localStorage ?? globalThis.localStorage;
	}
	async get(key, transformer) {
		const meta = getMeta(this.localStorage);
		const entry = meta[key];
		if (!entry) return null;
		if (Date.now() > entry.expiry) {
			delete meta[key];
			setMeta(meta, this.localStorage);
			this.localStorage.removeItem(entry.file);
			return null;
		}
		const file = entry.file ?? await hashKey(key);
		const value = this.localStorage.getItem(file);
		if (value === null) return null;
		return transformer ? transformer(value) : value;
	}
	async set(key, value, ttlMs, transformer) {
		const meta = getMeta(this.localStorage);
		const file = await hashKey(key);
		this.localStorage.setItem(file, transformer ? transformer(value) : value);
		meta[key] = {
			file,
			expiry: Date.now() + ttlMs
		};
		setMeta(meta, this.localStorage);
	}
	async clear() {
		await clearMeta(this.localStorage);
	}
};

//#endregion
export { LocalStorageCache, hashKey };