happy-dom
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Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.
72 lines • 2.25 kB
JavaScript
/**
* Fetch preflight response cache.
*
* @see https://developer.mozilla.org/en-US/docs/Glossary/Preflight_request
*/
export default class PreflightResponseCache {
#entries = {};
/**
* Returns cached response.
*
* @param request Request.
* @returns Cached response.
*/
get(request) {
const cachedResponse = this.#entries[request.url];
if (cachedResponse) {
if (cachedResponse.expires < Date.now()) {
delete this.#entries[request.url];
return null;
}
return cachedResponse;
}
return null;
}
/**
* Adds a cache entity.
*
* @param request Request.
* @param response Response.
* @returns Cached response.
*/
add(request, response) {
delete this.#entries[request.url];
if (request.headers.get('Cache-Control')?.includes('no-cache')) {
return null;
}
if (response.status < 200 || response.status >= 300) {
return null;
}
const maxAge = response.headers.get('Access-Control-Max-Age');
const allowOrigin = response.headers.get('Access-Control-Allow-Origin');
if (!maxAge || !allowOrigin) {
return null;
}
const allowMethods = [];
if (response.headers.has('Access-Control-Allow-Methods')) {
const allowMethodsHeader = response.headers.get('Access-Control-Allow-Methods');
if (allowMethodsHeader !== '*') {
for (const method of response.headers.get('Access-Control-Allow-Methods').split(',')) {
allowMethods.push(method.trim().toUpperCase());
}
}
}
const cachedResponse = {
allowOrigin,
allowMethods,
expires: Date.now() + parseInt(maxAge) * 1000
};
if (isNaN(cachedResponse.expires) || cachedResponse.expires < Date.now()) {
return null;
}
this.#entries[request.url] = cachedResponse;
return cachedResponse;
}
/**
* Clears the cache.
*/
clear() {
this.#entries = {};
}
}
//# sourceMappingURL=PreflightResponseCache.js.map