chore(tinyest-for-wgsl): Remove Acorn support

[cieplypolar]

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[github-actions]

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

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

import { ... } in PR vs import * as ... in PR (is the library tree-Shakeable?):

Test	tsdown
tgpu_init.ts	263.10 kB ($${\color{green}-3.5\%}$$)
tgpu_initFromDevice.ts	262.56 kB ($${\color{green}-3.7\%}$$)
tgpu_resolve.ts	161.75 kB ($${\color{green}-40.7\%}$$)
tgpu_resolveWithContext.ts	161.68 kB ($${\color{green}-40.7\%}$$)
tgpu_bindGroupLayout.ts	62.32 kB ($${\color{green}-77.1\%}$$)
tgpu_mutableAccessor.ts	57.04 kB ($${\color{green}-79.1\%}$$)
tgpu_accessor.ts	57.04 kB ($${\color{green}-79.1\%}$$)
tgpu_privateVar.ts	55.73 kB ($${\color{green}-79.6\%}$$)
tgpu_workgroupVar.ts	55.73 kB ($${\color{green}-79.6\%}$$)
tgpu_const.ts	55.15 kB ($${\color{green}-79.8\%}$$)
tgpu_lazy.ts	54.95 kB ($${\color{green}-79.8\%}$$)
tgpu_fragmentFn.ts	39.68 kB ($${\color{green}-85.4\%}$$)
tgpu_fn.ts	39.62 kB ($${\color{green}-85.5\%}$$)
tgpu_vertexFn.ts	39.50 kB ($${\color{green}-85.5\%}$$)
tgpu_computeFn.ts	39.20 kB ($${\color{green}-85.6\%}$$)
tgpu_vertexLayout.ts	28.33 kB ($${\color{green}-89.6\%}$$)
tgpu_comptime.ts	15.93 kB ($${\color{green}-94.2\%}$$)
tgpu_unroll.ts	1.75 kB ($${\color{green}-99.4\%}$$)
tgpu_slot.ts	1.70 kB ($${\color{green}-99.4\%}$$)

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

[github-actions]

Resolution Time Benchmark

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  line [0.71, 1.84, 3.84, 7.12, 11.09, 22.98, 48.05, 97.42]

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[pullfrog]

ℹ️ No critical issues — one test-coverage nit inline. The Acorn removal itself is complete and internally consistent.

Reviewed changes — initial review of commit 40eee14e ("only babel"). Removes Acorn as a supported tinyest-for-wgsl input and consolidates everything onto the Babel AST:

• Dependency changes — acorn dropped entirely; @babel/types promoted from devDependencies to dependencies (the public types now reference babel.Node, so downstream type resolution needs it as a real dep). Lockfile updated; the remaining lockfile acorn entries are transitive (rolldown, acorn-jsx, micromark, recma) and expected.
• Typing collapse — JsNode = babel.Node | acorn.AnyNode removed; transpileFn, transpileNode, extractFunctionParts, tryFindExternalChain, and Context.visitedNodes all narrow to babel.Node. The acorn-only PrivateIdentifier branch and Literal transpiler are gone (Babel emits the concrete literal node types, all still covered).
• Test simplification — dualTest / parseRollup helpers deleted; every case collapses to a single parseBabel run with snapshots unchanged.
• Object-literal key handling — new switch recognizes Identifier / StringLiteral / NumericLiteral / BigIntLiteral keys and throws on computed/other key types. String and numeric keys previously threw on the Babel path (only acorn's Literal was accepted), so this preserves the acorn-era capability and adds a dedicated test; computed identifier keys previously slipped through as literal names and now fail loudly — a strict improvement.

Verified locally: 18/18 package tests, 137/137 unplugin-typegpu tests (the only non-test consumer), clean tsc --noEmit, and repo-wide grep shows no leftover JsNode / acorn / dualTest references.

  ^{｜ Fix all ➔ ｜ Fix 👍s ➔ ｜ View workflow run ｜ Using DeepSeek Flash (free via Pullfrog for OSS) ｜ 𝕏}

[aleksanderkatan]

lesssgoo