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@github-actions github-actions released this 12 Jul 15:50
v1.7.0
72c9fa0

The headline of this release is experimental Vue 3 SFC recovery — wakaru can now reconstruct .vue-style single-file components from compiled render modules. It's backed by a big wave of correctness fixes that make the everyday decompile path safer, plus new execution-equivalence testing that verifies recovered code actually runs the same as the original.

✨ Experimental: Vue 3 SFC recovery (--vue-sfc)

wakaru bundle.js --unpack --vue-sfc -o out/

wakaru can now recover template-shaped SFC artifacts from compiled Vue 3 render code across webpack, Vite, and SystemJS outputs. It reconstructs templates, components and slots, directives (v-model, v-for, v-html, v-memo, event handlers with modifiers), conditional branches, and setup-block bindings — and there's a live Vue SFC preview in the playground now too.

This is experimental and there are still gaps, but it already handles a wide range of real-world compiler output.

🚀 New recovery

  • Nullish assignment (??=) recovery.
  • Expanded AMD and repro-edge recovery.

🛡️ Correctness & semantics

A large set of fixes to guarantee decompiled output preserves the original program's behavior:

  • const vs let — no longer emits const for bindings that are later reassigned (avoids runtime TypeErrors): mutated IIFE args/loop targets, wrapped binding writes, and mutable destructuring are all preserved as mutable.
  • Object rest & destructuring — correct recovery of computed object-rest keys, computed parameter destructuring, and adjacent-pick requirements; preserves rest semantics.
  • IIFE & eval — preserves IIFE and method shapes around eval and duplicate parameters; tighter arrow eval scope guards.
  • esbuild / TS helpers — tightened mangled spread matching, gated object-alias detection, and cleanup of consumed TS helpers.
  • DCE safety — preserves TDZ reads, deferred lexical reads, observable no-op reads, and import-link checks during transform-only DCE.
  • Misc — signed numeric switch cases.

🧪 Testing & CI

  • Execution-equivalence checks added to the reproduction matrices (template, enum, and array matrices) — recovered code is now verified to run equivalently, not just look right.
  • Hardened Test262 correctness harness: baseline identity preflight, metadata semantics, candidate freshness, and decompile-timeout failures.

Full changelog: v1.6.0...v1.7.0

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