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Hook.js

Javascript function hook

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/443030/1037826/Hookjs.js 

// ==UserScript==
// @name         Hook.js
// @namespace    https://github.com/invobzvr
// @version      0.1
// @description  Javascript function hook
// @author       invobzvr
// @homepageURL  https://github.com/invobzvr/invotoys.js/tree/main/hook.js
// @supportURL   https://github.com/invobzvr/invotoys.js/issues
// @license      GPL-3.0
// ==/UserScript==

(function () {
    const ORI = {};

    Function.prototype.hook = function (params) {
        typeof params === 'function' && (params = {
            scope: window,
            before: params,
        });
        !params.scope && (params.scope = window);
        const that = this,
            name = that.name;
        ORI[name] = that;
        params.scope[name] = function () {
            if (typeof params.before === 'function') {
                const ret = params.before.apply(this, arguments);
                if (ret !== undefined) {
                    return ret;
                }
            }
            let val = that.apply(this, arguments);
            if (typeof params.after === 'function') {
                const ret = params.after.apply(this, [val, arguments]);
                if (ret !== undefined) {
                    val = ret;
                }
            }
            return val;
        }
    }
})();