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check browser support for regex look behind

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this commit drops support for iOS 16.2 due to an issue with regex
support

Co-authored-by: sug <sug@tutao.de>
This commit is contained in:
kib 2025-12-04 16:31:57 +01:00
parent e703609e87
commit df0b6f7b71
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GPG key ID: 79B7666BAB6012A0
1 changed files with 10 additions and 1 deletions
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11
src/common/misc/ClientDetector.ts
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@ -134,7 +134,7 @@ export class ClientDetector {
*/
isSupported(): boolean {
this.syntaxChecks()
return this.isSupportedBrowserVersion() && this.testBuiltins() && this.websockets() && this.testCss()
return this.isSupportedBrowserVersion() && this.testBuiltins() && this.websockets() && this.testCss() && this.lookBehindRegex()
}
isMobileDevice(): boolean {
@ -184,6 +184,15 @@ export class ClientDetector {
return "XMLHttpRequest" in window
}
lookBehindRegex(): boolean {
try {
;/(?<=([ab]+)([bc]+))$/.exec("abc")
return true
} catch (e) {
return false
}
}
indexedDb(): boolean {
try {
return window.indexedDB != null