Fix 'metrika-yandex-tag' — scriptlet does not work if request is blocked by DNS. #472

Squashed commit of the following:

commit ecfc4ec
Author: Adam Wróblewski <adam@adguard.com>
Date:   Mon Dec 23 20:52:34 2024 +0100

    Fix metrika-yandex-tag scriptlet

Author: AdamWr

CHANGELOG.md

@@ -20,12 +20,14 @@ The format is based on [Keep a Changelog], and this project adheres to [Semantic
 
 ### Fixed
 
+- issue with `metrika-yandex-tag` redirect when it's used as a scriptlet [#472]
 - issue with `trusted-click-element` scriptlet when `delay` was used and the element was removed
   and added again before it was clicked [#391]
 
 [Unreleased]: https://github.com/AdguardTeam/Scriptlets/compare/v2.0.1...HEAD
 [#391]: https://github.com/AdguardTeam/Scriptlets/issues/391
 [#468]: https://github.com/AdguardTeam/Scriptlets/issues/468
+[#472]: https://github.com/AdguardTeam/Scriptlets/issues/472
 
 ## [v2.0.1] - 2024-11-13
 

src/redirects/metrika-yandex-tag.js

@@ -108,16 +108,19 @@ export function metrikaYandexTag(source) {
         destruct,
     };
 
-    function ym(id, funcName, ...args) {
-        return api[funcName] && api[funcName](id, ...args);
-    }
-
     function init(id) {
         // yaCounter object should provide api
         window[`yaCounter${id}`] = api;
         document.dispatchEvent(new Event(`yacounter${id}inited`));
     }
 
+    function ym(id, funcName, ...args) {
+        if (funcName === 'init') {
+            return init(id);
+        }
+        return api[funcName] && api[funcName](id, ...args);
+    }
+
     if (typeof window.ym === 'undefined') {
         window.ym = ym;
         ym.a = [];

tests/redirects/metrika-yandex-tag.test.js

@@ -42,6 +42,40 @@ test('API mocking test', (assert) => {
     clearGlobalProps(`yaCounter${counterId1}`, `yaCounter${counterId1}`);
 });
 
+test('Init mocking test - when it is used as a scriptlet', (assert) => {
+    let testPassed = false;
+
+    evalWrapper(redirects.getRedirect(name).content);
+
+    window.ym = window.ym || function YandexMetrika(...args) {
+        (window.ym.a = window.ym.a || []).push(...args);
+    };
+
+    const counterId = 28510826;
+
+    window.ym(counterId, 'init', {
+        clickmap: true,
+        trackLinks: true,
+        accurateTrackBounce: true,
+        webvisor: true,
+        ecommerce: 'dataLayer',
+    });
+
+    try {
+        window.yaCounter28510826.reachGoal('login');
+        testPassed = true;
+    } catch (error) {
+        // eslint-disable-next-line no-console
+        console.error(`yaCounter${counterId} is not defined:`, error);
+    }
+
+    assert.ok(window.ym, 'Metrika function was created');
+    assert.ok(typeof window[`yaCounter${counterId}`] === 'object', 'yaCounter was created');
+    assert.strictEqual(testPassed, true, 'testPassed is true');
+
+    clearGlobalProps(`yaCounter${counterId}`);
+});
+
 test('ym: API methods test', (assert) => {
     assert.expect(4);