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Arena/214db6d6 cloakjs - #2
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extreme is no longer a copy of high (the 1.2.0 presets were byte-identical
after defaults were applied). It now adds identifier escaping, codepoint-safe
string splitting, decoy string-array entries, maximum flattening/dead-code
amounts and a recurring debugger trap.
Library changes:
- scope-aware identifier mangling: parameters (defaults, rest), catch
bindings, class names, named function expressions and template
substitutions; a spelling is renamed only when every occurrence lies inside
a scope that declares it, so globals owned by other scripts stay intact
- property names, object keys/shorthand, method and field names, labels,
destructuring patterns, module specifiers and string keys are never touched
- self-contained string decoder: own Base64 + alphabet substitution + RC4 +
UTF-8 handling, no atob/Uint8Array/TextDecoder required by generated code
- control-flow flattening inside function bodies (nested bodies first), with a
shuffled case layout, a sequence array that fixes execution order and decoy
cases that can never be selected; hoisting/scoping-sensitive statements and
the final top-level statement are kept out of dispatchers
- opaque predicates verified at obfuscation time, richer unreachable decoy
blocks, static template literals encrypted like strings
- self-defending prelude hashes generated functions (whitespace-insensitive)
and throws Error("Unexpected token") when they are patched
- typed option validation, seeded reproducible output, per-run stats that
report the techniques actually applied, clearer warnings
Docs and build:
- README rewritten for 1.3.0: preset ladder, full option table, technique
notes, behaviour caveats (selfDefending vs. re-minification, module syntax,
debug protection) and the npm note — the `cloakjs` package on npm is an
unrelated AOP/Proxy library, so the README points at the repo and jsDelivr
and never tells anyone to install it
- test suite expanded to 40 behavioural tests (every preset, option matrix,
generators/classes/private fields/destructuring/ASI, guard tampering)
- cloakjs.min.js regenerated with Terser 5.44.0; the workflow runs the tests,
rebuilds and verifies the minified file before committing it
Co-authored-by: arena-agent <297053741+arena-agent@users.noreply.github.com>
- explain exactly what extreme adds over high, and that nested function bodies are flattened before the bodies that contain them - note that generated code runs in a bare sandbox (TextDecoder/Uint8Array are optional fast paths, atob is not used at all) - correct the identifier escaping example (the escaper emits \uXXXX only) - clarify the completion-value row and the workflow description Co-authored-by: arena-agent <297053741+arena-agent@users.noreply.github.com>
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