From 3d7197c547bb2fc75be7214b94ab98e94cc302ac Mon Sep 17 00:00:00 2001
From: Amila Welihinda <amilajack@gmail.com>
Date: Sun, 28 Jun 2020 14:30:39 -0700
Subject: [PATCH] test: null propagation (#369)

---
 test/e2e.spec.ts | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/test/e2e.spec.ts b/test/e2e.spec.ts
index 258d3982..eefa5875 100644
--- a/test/e2e.spec.ts
+++ b/test/e2e.spec.ts
@@ -2,7 +2,8 @@ import { RuleTester } from "eslint";
 import rule from "../src/rules/compat";
 
 const ruleTester = new RuleTester({
-  parserOptions: { ecmaVersion: 2015, sourceType: "module" },
+  parserOptions: { ecmaVersion: 2020, sourceType: "module" },
+  parser: require.resolve("@typescript-eslint/parser"),
   settings: {
     lintAllEsApis: true,
   },
@@ -26,6 +27,10 @@ ruleTester.run("compat", rule, {
       `,
       settings: { browsers: ["ExplorerMobile 10"] },
     },
+    {
+      code: `window?.fetch?.('example.com')`,
+      settings: { browsers: ["ie 9"] },
+    },
     {
       code: `
         if (Array.prototype.flat) {
@@ -607,6 +612,16 @@ ruleTester.run("compat", rule, {
         },
       ],
     },
+    // @TODO: Fix this edge case
+    // {
+    //   code: `window?.fetch`,
+    //   settings: { browsers: ["ie 9"] },
+    //   errors: [
+    //     {
+    //       message: "fetch is not supported in IE 9",
+    //     },
+    //   ],
+    // },
     {
       code: "Object.entries({}), Object.values({})",
       settings: {