mirror of
https://github.com/discourse/discourse.git
synced 2025-06-07 22:34:44 +08:00
8a68f49adb
Prior to v89, Firefox has bugs with document.execCommand("insertText"): https://bugzil.la/1220696
This commit introduces some variables to browser-detect, and therefore wraps the entire logic in an IIFE to avoid state leaking. (`let`/`const` are not supported on older browsers)
25 lines
877 B
JavaScript
25 lines
877 B
JavaScript
/* eslint-disable no-var */ // `let` is not supported in very old browsers
|
|
|
|
(function () {
|
|
if (!window.WeakMap || !window.Promise || typeof globalThis === "undefined") {
|
|
window.unsupportedBrowser = true;
|
|
} else {
|
|
// Some implementations of `WeakMap.prototype.has` do not accept false
|
|
// values and Ember's `isClassicDecorator` sometimes does that (it only
|
|
// checks for `null` and `undefined`).
|
|
try {
|
|
new WeakMap().has(0);
|
|
} catch (err) {
|
|
window.unsupportedBrowser = true;
|
|
}
|
|
|
|
var match = window.navigator.userAgent.match(/Firefox\/([0-9]+)\./);
|
|
var firefoxVersion = match ? parseInt(match[1], 10) : null;
|
|
if (firefoxVersion && firefoxVersion < 89) {
|
|
// prior to v89, Firefox has bugs with document.execCommand("insertText")
|
|
// https://bugzil.la/1220696
|
|
window.unsupportedBrowser = true;
|
|
}
|
|
}
|
|
})();
|