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Add a Modernizr check for v mode regexes #27674

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Jul 4, 2024
+7 −2
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Add a Modernizr check for v mode regexes #27674

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9 changes: 7 additions & 2 deletions src/vector/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -56,8 +56,8 @@ function checkBrowserFeatures(): boolean {
return false;
}

// Custom checks atop Modernizr because it doesn't have ES2018/ES2019 checks
// in it for some features we depend on.
// Custom checks atop Modernizr because it doesn't have 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", () => typeof window.Promise?.prototype?.finally === "function");
Expand All @@ -70,6 +70,11 @@ function checkBrowserFeatures(): boolean {
);
// ES2019: http://262.ecma-international.org/10.0/#sec-object.fromentries
window.Modernizr.addTest("objectfromentries", () => typeof window.Object?.fromEntries === "function");
// ES2024: https://tc39.es/ecma262/2024/#sec-get-regexp.prototype.unicodesets
window.Modernizr.addTest(
"regexpunicodesets",
() => window.RegExp?.prototype && "unicodeSets" in window.RegExp.prototype,
);

const featureList = Object.keys(window.Modernizr) as Array<keyof ModernizrStatic>;

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