url.js

import EventEmitter from "events";
import HookEvent from "./hook.js";

/**
 * @typedef {import('./index').default} UVClient
 */

class URLApi extends EventEmitter {
	/**
	 *
	 * @param {UVClient} ctx
	 */
	constructor(ctx) {
		super();
		this.ctx = ctx;
		this.window = this.ctx.window;
		this.URL = this.window.URL || {};
		this.createObjectURL = this.URL.createObjectURL;
		this.revokeObjectURL = this.URL.revokeObjectURL;
	}
	overrideObjectURL() {
		this.ctx.override(this.URL, "createObjectURL", (target, that, args) => {
			if (!args.length) return target.apply(that, args);
			let [object] = args;

			const event = new HookEvent({ object }, target, that);
			this.emit("createObjectURL", event);

			if (event.intercepted) return event.returnValue;
			return event.target.call(event.that, event.data.object);
		});
		this.ctx.override(this.URL, "revokeObjectURL", (target, that, args) => {
			if (!args.length) return target.apply(that, args);
			let [url] = args;

			const event = new HookEvent({ url }, target, that);
			this.emit("revokeObjectURL", event);

			if (event.intercepted) return event.returnValue;
			return event.target.call(event.that, event.data.url);
		});
	}
}

export default URLApi;