fix(unplugin-typegpu): Bun plugin should respect earlyPruning config

[iwoplaza]

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Resolution Time Benchmark

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Bundle size comparison (import * as ... in PR vs import * as ... in target):

🟢 Decreased	➖ Unchanged	🔴 Increased	❔ Unknown
0	325	0	0

No notable changes.

If you wish to run a comparison for other, slower bundlers, run the 'Tree-shake test' from the GitHub Actions menu.

[Copilot]

🟢 Approval recommended

The change is minimal, aligns Bun behavior with the intended option semantics, and includes targeted automated test coverage.

Pull request overview

This PR fixes the Bun integration of unplugin-typegpu so that its “early pruning” optimization is controlled by the earlyPruning option (matching the behavior of the shared unplugin factory), and adds a Bun-specific regression test to cover the option behavior.

Changes:

• Gate Bun’s early-pruning short-circuit behind options.earlyPruning.
• Add a Vitest suite verifying earlyPruning: false forces transformation, while true/undefined preserves original code when the prune regex doesn’t match.

File summaries

File	Description
packages/unplugin-typegpu/src/bun.ts	Makes Bun’s early-pruning return path conditional on options.earlyPruning.
packages/unplugin-typegpu/test/bun.test.ts	Adds regression coverage for earlyPruning behavior across undefined, true, and false.

Review details

• Files reviewed: 2/2 changed files
• Comments generated: 0
• Review effort level: Lite

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[pullfrog]

✅ No new issues found.

Reviewed changes — This run reviewed the full PR: a one-line change and its accompanying test.

• Bun plugin honors earlyPruning (src/bun.ts:27) — the early-prune skip is now gated on options.earlyPruning, bringing the Bun plugin in line with the core unpluginFactory, which already applies the earlyPruneRegex code filter only when earlyPruning is enabled. The Bun plugin is the single framework that reimplements pruning manually in its onLoad handler, so this closes a real behavioral gap: with earlyPruning: false, files without tgpu/use gpu markers were previously left untransformed.
• New regression test (test/bun.test.ts) — it.each([undefined, true, false]) stubs the Bun global, invokes the registered onLoad handler on a marker-free d.struct({...}) snippet, and asserts unchanged output for undefined/true while requiring auto-named output (__TYPEGPU_AUTONAME__, "myStruct") for false. Verified locally that this test fails (1/3) with the fix reverted and passes (3/3) with it, so the coverage is genuine. The undefined case also exercises the defu default (true) merge.

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