RESOLVED CONFIGURATION CHANGED Bug 204544
`URLSearchParams` cannot be extended 
https://bugs.webkit.org/show_bug.cgi?id=204544
Summary `URLSearchParams` cannot be extended
709922234
Reported 2019-11-22 19:10:21 PST
Created attachment 384224 [details] Safari webconsole ``` class QueryString extends URLSearchParams { toString() { const string = super.toString(); return string ? `?${string}` : ''; } } new QueryString({a: 1, b: 2}).toString() ``` Expectation: "?a=1&b=2" Actual: "a=1&b=2"
Attachments
Safari webconsole (50.99 KB, image/png)
2019-11-22 19:10 PST, 709922234 		no flags
Details
Firefox webconsole (52.59 KB, image/png)
2019-11-22 19:11 PST, 709922234 		no flags
Details
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709922234
Comment 1 2019-11-22 19:11:00 PST
Created attachment 384225 [details] Firefox webconsole
Radar WebKit Bug Importer
Comment 2 2019-11-23 12:09:06 PST
<rdar://problem/57454362>
Alexey Shvayka
Comment 3 2020-03-22 10:23:12 PDT
(In reply to 709922234 from comment #0) > Expectation: "?a=1&b=2" > Actual: "a=1&b=2" As of https://trac.webkit.org/changeset/256716, extending URLSearchParams (as well as other DOM constructors) works as expected.
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