happy-dom/lib/fetch/preload/PreloadUtility.js

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.

/**
 * Utility for preloading resources.
 *
 * @see https://html.spec.whatwg.org/multipage/links.html#link-type-preload
 */
export default class PreloadUtility {
    /**
     * Returns a key for a preload entry.
     *
     * @param options Options.
     * @param options.url URL.
     * @param options.destination Destination.
     * @param options.mode Mode.
     * @param options.credentialsMode Credentials mode.
     * @returns Key.
     */
    static getKey(options) {
        return JSON.stringify({
            url: options.url,
            destination: options.destination,
            mode: options.mode,
            credentialsMode: options.credentialsMode
        });
    }
}
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