Wakaru is a JavaScript decompiler that separates production bundles into modules and turns minified or transpiled code into more readable modern syntax. Developers and security reviewers use it to inspect bundled JavaScript, recover constructs such as async functions and modules, and understand code produced by tools including Babel, TypeScript, SWC, webpack, and esbuild.
Borrowing it
Nothing to install: this file belongs to pionxzh/wakaru. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/pionxzh/wakaru/main/AGENTS.mdgit clone --depth 1 https://github.com/pionxzh/wakaruWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/pionxzh/wakaru/agents-md)<a href="https://agentmods.dev/instructions/pionxzh/wakaru/agents-md"><img src="https://agentmods.dev/badge/instructions/pionxzh/wakaru/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/pionxzh/wakaru/agents-md"><img src="https://agentmods.dev/badge/instructions/pionxzh/wakaru/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.04202 | $0.04202 |
| Opus 5.5 | $0.01681 | $0.01681 |
| Sonnet 5.5 | $0.00840 | $0.00840 |
| Haiku 4.5 | $0.00420 | $0.00420 |
Grade A, and why
wakaru AGENTS.md scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 14d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
Install once with `cargo install cargo-nextest --locked` (or `curl -LsSf https://get.nexte.st/latest/<os> | tar zxf - -C $HOME/.cargo/bin`). How it starts
The opening of the file, as written. The whole thing — 262 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Wakaru
Wakaru is a JavaScript decompiler that transforms minified/bundled code back into readable, modern ESNext. It extracts Bun single-file executable containers and unpacks bundles (webpack4/5, including Vercel ncc; Turbopack; Browserify, including Cocos Creator 2.x; Closure ModuleManager; SystemJS; esbuild/Bun; Metro; AMD/UMD; plus heuristic scope-hoisted splitting), restores transpiler helpers (Babel, TypeScript), and applies an ordered pipeline of rewrite rules to recover idiomatic source (the registry in crates/core/src/rules/pipeline.rs is the authoritative list). It can also experimentally recover Vue 3 SFC-like artifacts from compiled render modules (--vue-sfc).
Written in Rust using the SWC AST ecosystem. The workspace is split into five crates under crates/: core (internal engine), wakaru (the published Rust façade), cli, formatter, and wasm.
Understand the Project
Read docs/architecture.md first — pipeline flow, components, design
patterns. It is the universal entry point. Then read by task, instead of
reading everything:
| Task | Also read |
|---|---|
| Any code change | docs/testing.md — test patterns, helpers, required verification |
| Finding source entry points | docs/code-map.md — file lookup by subsystem |
| PR / branch review, handoff, or resuming research | docs/reviewing.md — scope, evidence, ownership transfer, and research resumption; docs/testing.md#sharing-verification-results — reuse and invalidation of test evidence |
| Rule bugfix / snapshot regression | docs/debugging.md — rule tracing, snapshot layers, fixture workflow |
| New rule, or moving a rule | docs/rule-dependency-inventory.md — ordering rationale, fragile edges; docs/rewrite-assumptions.md — level gating, named assumptions |
| Transpiler helper work | docs/helper-detection.md — detection design and what was already rejected |
| Detection, unpacking, or scope-hoisted splitting | docs/unpacking.md — format shapes, factory normalization, raw/multi-input behavior, and fallback boundaries |
| Cross-module recovery | docs/fact-system.md — the two-phase barrier, module facts, and same-module proof boundaries |
| Bun single-file executables | docs/bun-standalone.md — binary graph format, CLI flow, safety, and public API limits |
Public Rust API (wakaru crate) |
docs/public-api.md — design decisions and boundaries; rustdoc (cargo doc -p wakaru) is the behavioral contract |
Vue SFC recovery (--vue-sfc) |
docs/vue-decompile.md — the recovery path and CLI behavior; docs/vue-sfc-recovery-status.md — experimental status and known gaps |
| Correctness / semantics questions | docs/rewrite-assumptions.md, docs/test262-roundtrip.md |
| Before proposing a redesign | docs/learnings/ — approaches already built, measured, and reverted |
| Design change, or starting or resuming a feature line | docs/proposals/ — check for a proposal on the topic and read its Status: line first; docs/proposals/README.md says when to write one |
| Performance work | docs/learnings/performance-round-2026-09.md — what was measured, kept, and rejected; measurement rules |
| Supported CLI flag or output changes | docs/cli.md — the CLI reference and source of truth for behavior detail; skills/wakaru/SKILL.md — the agent skill (carries only what changes the commands an agent runs or how it reads output); docs-site/content/docs/reference/cli.mdx — the user-facing docs page. Keep all three in sync in the same commit |
| Debug / experimental CLI changes | docs/cli-debug.md — current commands, compatibility policy, and feedback path |
| Agent / tool integration | skills/wakaru/SKILL.md — CLI-based agent surface |
Docs site content or deployment (docs-site/) |
docs/docs-site.md — basePath gotchas, deploy pattern, sync obligations, content conventions |
| Cutting a release | docs/releasing.md |
Bumping swc_core |
docs/swc-upgrades.md — how to read a bump, workaround removal, checklist, filing swc issues |
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 14d ago Changed · +2 lines · +85 tokens per session 8e622412e3cf
- 15d ago Changed · +1 lines · +20 tokens per session 2d438cf48a67
- 16d ago Changed · +2 lines · +109 tokens per session 7bfca10e71f2
- 18d ago Changed · +24 lines · +383 tokens per session 10aa4ece7aeb
- 19d ago Changed · +5 tokens per session 87706f4f3095
- 25d ago Changed · +7 lines · +88 tokens per session edeca2a3f1a3
- 27d ago Changed · +1 lines · +34 tokens per session 62d329b348ec
- 1mo ago Changed · +1 lines · +26 tokens per session 429cccefcc3a
- 1mo ago Changed · +8 lines · +105 tokens per session 2f191a744133
- 1mo ago First seen · 216 lines · 3,347 tokens per session scan A 250bf98bd161
wakaru AGENTS.md is an instructions file published in the GitHub repository pionxzh/wakaru (1,055 stars, last pushed today), licensed Apache-2.0. It adds 4,202 tokens to every session, about $0.0168 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.