Bump WebKit

[Jarred-Sumner]

What does this PR do?

How did you verify your code works?

[robobun]

^{Updated 12:19 AM PT - Sep 26th, 2025}

❌ @Jarred-Sumner, your commit 5ba94c4 has 4 failures in Build #27108 (All Failures):

• test/cli/install/bun-repl.test.ts - pid 6895 segmentation fault at address 0x0 on 🐧 3.21 aarch64
• test/js/node/net/handle-leak.test.ts - 1 failing on 🪟 2019 x64
• test/cli/init/init.test.ts - 5 failing on 🐧 12 x64-asan
• test/cli/run/require-cache.test.ts - 1 failing on 🍎 14 aarch64

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🧪   To try this PR locally:

bunx bun-pr 22957

That installs a local version of the PR into your bun-22957 executable, so you can run:

bun-22957 --bun

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

Updates default WEBKIT_VERSION in CMake. Converts various variant-dispatch sites from WTF::switchOn to std::visit with WTF::makeVisitor across WebCore and WebCrypto bindings. Adjusts a node crypto header to use WTF::Variant instead of std::variant for a member type. No public API changes.

Changes

Cohort / File(s)	Summary
Build config: WebKit version default cmake/tools/SetupWebKit.cmake	Updated default WEBKIT_VERSION hash used when WEBKIT_VERSION is unset.
Node crypto: variant type change src/bun.js/bindings/node/crypto/CryptoGenDhKeyPair.h	Changed Bun::DhKeyPairJobCtx::m_prime from std::variant to WTF::Variant of ncrypto::BignumPointer or int.
WebCore: switchOn → std::visit migration src/bun.js/bindings/webcore/JSMessageEventCustom.cpp, src/bun.js/bindings/webcore/MessageEvent.cpp, src/bun.js/bindings/webcore/PerformanceUserTiming.cpp, src/bun.js/bindings/webcore/SerializedScriptValue.cpp	Replaced WTF::switchOn with std::visit using WTF::makeVisitor for variant dispatch; preserved existing branch semantics (message data conversion, memory cost, timing mark handling, property value assignment).
WebCrypto: switchOn → std::visit migration src/bun.js/bindings/webcrypto/SubtleCrypto.cpp	Rewrote key data parsing and generateKey resolution to use std::visit with WTF::makeVisitor, keeping existing error handling and results.

Possibly related PRs

• Upgrade WebKit #22499: Also changes the default WEBKIT_VERSION in cmake/tools/SetupWebKit.cmake.
• Disable glibcxx assertions in WebKit release non-asan builds #22647: Also updates the default WEBKIT_VERSION in cmake/tools/SetupWebKit.cmake.

✨ Finishing touches

• 📝 Generate Docstrings

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch jarred/bump-webkit-sep-25

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📥 Commits

Reviewing files that changed from the base of the PR and between 5a709a2 and 5ba94c4.

📒 Files selected for processing (7)

• cmake/tools/SetupWebKit.cmake (1 hunks)
• src/bun.js/bindings/node/crypto/CryptoGenDhKeyPair.h (1 hunks)
• src/bun.js/bindings/webcore/JSMessageEventCustom.cpp (1 hunks)
• src/bun.js/bindings/webcore/MessageEvent.cpp (1 hunks)
• src/bun.js/bindings/webcore/PerformanceUserTiming.cpp (2 hunks)
• src/bun.js/bindings/webcore/SerializedScriptValue.cpp (1 hunks)
• src/bun.js/bindings/webcrypto/SubtleCrypto.cpp (2 hunks)

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