nuxt/dist/app/utils/hash.js

Nuxt is a free and open-source framework with an intuitive and extendable way to create type-safe, performant and production-grade full-stack web applications and websites with Vue.js.

import { fnv1a64Base36 } from "fnv1a-64";
import { identify } from "object-identity";
//#region src/app/utils/hash.ts
/**
* Hash an arbitrary value into a short, stable string key.
*
* Values are serialized to a canonical, locale-independent representation
* (equal structures hash equally regardless of key order or runtime locale),
* then digested with a fast non-cryptographic hash. This is what `useFetch` and
* `useAsyncData` use internally to derive their cache keys, so it is safe to use
* for the same purpose in your own code.
*
* The digest is non-cryptographic and must not be used for integrity checks.
*
* @since 4.5.0
*/
function hashKey(value) {
	return fnv1a64Base36(identify(value));
}
/**
* Derive a stable key from a function's source.
*
* Functions are hashed from their source text (or name/arity for native functions).
*
* @internal
*/
const NATIVE_CODE_RE = /\{\s*\[native code\]\s*\}/;
function hashFunction(fn) {
	const src = Function.prototype.toString.call(fn);
	return fnv1a64Base36(NATIVE_CODE_RE.test(src) ? `${fn.name || ""}(${fn.length})[native]` : src);
}
//#endregion
export { hashFunction, hashKey };