fix(core): Check fetch support with data URL

[s1gr1d]

As Deno requires a valid URL when calling new Request, example.com was used but this caused problems.

This PR changes it to a data URL as it does not rely on external dependencies and is a valid URL in Deno.

Fixes: #18218

Previous PR for that: #5630

[cursor]

Bug: Deno Referrer Policy URL Fix

The supportsReferrerPolicy function still uses new Request('_', ...) with an invalid URL, which will fail in Deno for the same reason the PR fixed in _isFetchSupported. Deno requires valid URLs for the Request constructor, so '_' needs to be changed to a valid URL like 'data:,' to maintain consistency with the fix.

packages/core/src/utils/supports.ts#L171-L172

sentry-javascript/packages/core/src/utils/supports.ts

Lines 171 to 172 in 432d9d7

	try {
	new Request('_', {

 

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[github-actions]

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	24.62 kB	-0.06%	-14 B 🔽
@sentry/browser - with treeshaking flags	23.13 kB	-0.06%	-13 B 🔽
@sentry/browser (incl. Tracing)	41.28 kB	-0.03%	-12 B 🔽
@sentry/browser (incl. Tracing, Profiling)	45.56 kB	-0.03%	-12 B 🔽
@sentry/browser (incl. Tracing, Replay)	79.73 kB	-0.02%	-15 B 🔽
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	69.44 kB	-0.02%	-13 B 🔽
@sentry/browser (incl. Tracing, Replay with Canvas)	84.43 kB	-0.02%	-15 B 🔽
@sentry/browser (incl. Tracing, Replay, Feedback)	96.64 kB	-0.02%	-13 B 🔽
@sentry/browser (incl. Feedback)	41.29 kB	-0.02%	-5 B 🔽
@sentry/browser (incl. sendFeedback)	29.29 kB	-0.03%	-6 B 🔽
@sentry/browser (incl. FeedbackAsync)	34.21 kB	-0.02%	-6 B 🔽
@sentry/react	26.32 kB	-0.05%	-12 B 🔽
@sentry/react (incl. Tracing)	43.22 kB	-0.03%	-11 B 🔽
@sentry/vue	29.11 kB	-0.05%	-13 B 🔽
@sentry/vue (incl. Tracing)	43.08 kB	-0.03%	-11 B 🔽
@sentry/svelte	24.64 kB	-0.07%	-15 B 🔽
CDN Bundle	26.94 kB	-0.05%	-13 B 🔽
CDN Bundle (incl. Tracing)	41.83 kB	-0.04%	-13 B 🔽
CDN Bundle (incl. Tracing, Replay)	78.38 kB	-0.02%	-15 B 🔽
CDN Bundle (incl. Tracing, Replay, Feedback)	83.85 kB	-0.01%	-2 B 🔽
CDN Bundle - uncompressed	78.92 kB	-0.03%	-16 B 🔽
CDN Bundle (incl. Tracing) - uncompressed	124.07 kB	-0.02%	-16 B 🔽
CDN Bundle (incl. Tracing, Replay) - uncompressed	240.1 kB	-0.01%	-16 B 🔽
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	252.87 kB	-0.01%	-16 B 🔽
@sentry/nextjs (client)	45.37 kB	-0.03%	-13 B 🔽
@sentry/sveltekit (client)	41.67 kB	-0.03%	-9 B 🔽
@sentry/node-core	50.91 kB	+0.01%	+1 B 🔺
@sentry/node	158.1 kB	-0.01%	-2 B 🔽
@sentry/node - without tracing	92.78 kB	+0.01%	+1 B 🔺
@sentry/aws-serverless	106.53 kB	-0.01%	-1 B 🔽

View base workflow run

[github-actions]

node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

Scenario	Requests/s	% of Baseline	Prev. Requests/s	Change %
GET Baseline	8,987	-	8,400	+7%
GET With Sentry	1,382	15%	1,305	+6%
GET With Sentry (error only)	6,123	68%	5,789	+6%
POST Baseline	1,209	-	1,129	+7%
POST With Sentry	516	43%	465	+11%
POST With Sentry (error only)	1,070	89%	1,040	+3%
MYSQL Baseline	3,345	-	3,218	+4%
MYSQL With Sentry	498	15%	410	+21%
MYSQL With Sentry (error only)	2,763	83%	2,581	+7%

View base workflow run

[Lms24]

Nice fix, thanks!