From 27a92a5c894ff01566c7ddce84957334b78809da Mon Sep 17 00:00:00 2001 From: "J. Ryan Stinnett" Date: Mon, 8 Feb 2021 16:36:49 +0000 Subject: [PATCH] Add RegExp dotAll feature test As mentioned in https://github.com/vector-im/element-web/issues/16020#issuecomment-774384598, we're depending on the `dotAll` / `s` regex feature. This adds a test so browsers without this see an error screen. --- src/vector/index.ts | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/src/vector/index.ts b/src/vector/index.ts index b3e29bc382..21aacaf69e 100644 --- a/src/vector/index.ts +++ b/src/vector/index.ts @@ -45,14 +45,20 @@ function checkBrowserFeatures() { return false; } - // custom checks atop Modernizr because it doesn't have ES2018/ES2019 checks in it for some features we depend on, - // Modernizr requires rules to be lowercase with no punctuation: - // ES2018: http://www.ecma-international.org/ecma-262/9.0/#sec-promise.prototype.finally + // Custom checks atop Modernizr because it doesn't have ES2018/ES2019 checks + // in it for some features we depend on. + // Modernizr requires rules to be lowercase with no punctuation. + // ES2018: http://262.ecma-international.org/9.0/#sec-promise.prototype.finally window.Modernizr.addTest("promiseprototypefinally", () => - window.Promise && window.Promise.prototype && typeof window.Promise.prototype.finally === "function"); - // ES2019: http://www.ecma-international.org/ecma-262/10.0/#sec-object.fromentries + typeof window.Promise?.prototype?.finally === "function"); + // ES2018: https://262.ecma-international.org/9.0/#sec-get-regexp.prototype.dotAll + window.Modernizr.addTest("regexpdotall", () => ( + window.RegExp?.prototype && + !!Object.getOwnPropertyDescriptor(window.RegExp.prototype, "dotAll")?.get + )); + // ES2019: http://262.ecma-international.org/10.0/#sec-object.fromentries window.Modernizr.addTest("objectfromentries", () => - window.Object && typeof window.Object.fromEntries === "function"); + typeof window.Object?.fromEntries === "function"); const featureList = Object.keys(window.Modernizr);