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Change the minimum "supported" version of the Safari-browser to Safari 10

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According to https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#faq-support, Safari 9 is still listed as "mostly supported".

Given that the *last* release from the Safari 9 branch was on [September 1, 2016](https://en.wikipedia.org/wiki/Safari_version_history#Safari_9), it's questionable at least to me if it actually makes sense for us to even pretend to "support" such an old browser.
Especially when the *first* release from the Safari 10 branch was on [September 20, 2016](https://en.wikipedia.org/wiki/Safari_version_history#Safari_10), which is now over four years ago.

Based on the MDN compatibility data, this patch thus removes the following polyfills:
 - `TypedArray.prototype.slice()`, see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/slice#Browser_compatibility
 - `String.prototype.codePointAt()`, see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/codePointAt#Browser_compatibility
 - `String.fromCodePoint()`, see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/fromCodePoint#Browser_compatibility
This commit is contained in:
Jonas Jenwald 2020-12-14 16:01:20 +01:00
parent 640a08444c
commit 499d865ebf
2 changed files with 1 additions and 28 deletions
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2
gulpfile.js
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@ -84,7 +84,7 @@ var AUTOPREFIXER_CONFIG = {
"Chrome >= 49", // Last supported on Windows XP "Chrome >= 49", // Last supported on Windows XP
"Firefox >= 52", // Last supported on Windows XP "Firefox >= 52", // Last supported on Windows XP
"Firefox ESR", "Firefox ESR",
"Safari >= 9", "Safari >= 10",
"> 0.5%", "> 0.5%",
"not dead", "not dead",
], ],

27
src/shared/compatibility.js
View File

@ -59,15 +59,6 @@ if (
require("core-js/es/object/from-entries.js"); require("core-js/es/object/from-entries.js");
})(); })();
// Provides support for TypedArray.prototype.slice in legacy browsers.
// Support: Safari<10
(function checkTypedArraySlice() {
if (Uint8Array.prototype.slice) {
return;
}
require("core-js/es/typed-array/slice");
})();
// Provides support for *recent* additions to the Promise specification, // Provides support for *recent* additions to the Promise specification,
// however basic Promise support is assumed to be available natively. // however basic Promise support is assumed to be available natively.
// Support: Firefox<71, Chrome<76, Safari<13 // Support: Firefox<71, Chrome<76, Safari<13
@ -130,24 +121,6 @@ if (
globalThis.ReadableStream = require("web-streams-polyfill/dist/ponyfill.js").ReadableStream; globalThis.ReadableStream = require("web-streams-polyfill/dist/ponyfill.js").ReadableStream;
})(); })();
// Provides support for String.codePointAt in legacy browsers.
// Support: Safari<10
(function checkStringCodePointAt() {
if (String.prototype.codePointAt) {
return;
}
require("core-js/es/string/code-point-at.js");
})();
// Provides support for String.fromCodePoint in legacy browsers.
// Support: Safari<10
(function checkStringFromCodePoint() {
if (String.fromCodePoint) {
return;
}
String.fromCodePoint = require("core-js/es/string/from-code-point.js");
})();
// Provides support for String.prototype.padStart in legacy browsers. // Provides support for String.prototype.padStart in legacy browsers.
// Support: Chrome<57, Safari<10 // Support: Chrome<57, Safari<10
(function checkStringPadStart() { (function checkStringPadStart() {