Given the initial round of issues found during the launch of wikifunctions.org (T343138), and their means of exploitation, it would be good to explore different avenues for further locking down language-specific execution via Abstract Wikipedia's #function-evaluator (I couldn't find a tag for function-executor). This should likely involve due-diligence around:
# Exploring interpreters along the lines of Google's [[ https://developers.google.com/closure/compiler | Closure Compiler ]] to determine what, if any, performance and security advantages it might offer over regular nodejs execution.
# Exploring filtering mechanisms such as eslint's [[ https://eslint.org/docs/latest/rules/no-restricted-syntax | no-restricted-syntax ]] AST functionality.
# Exploring ways of fully- or partially-limiting calls to dangerous methods and other language constructs. While this can often be a fool's errand, certain quirks of nodejs allow setting methods to `undefined`, thus making them unavailable in certain execution contexts. This seems to work surprisingly well even when various attempts at obfuscation are attempted, e.g.
```lang=javascript
eval = undefined;
// throws TypeError: eval is not a function
eval("console.log('test')")
// heavily obfuscated js - throws TypeError: eval is not a function
(function(_0x92422c,_0x5f0d59){var _0xe5be47=_0x25bd,_0x6696b9=_0x92422c();while(!![]){try{var _0x2e03d2=-parseInt(_0xe5be47(0x1e4))/0x1*(parseInt(_0xe5be47(0x1e3))/0x2)+parseInt(_0xe5be47(0x1df))/0x3*(parseInt(_0xe5be47(0x1e2))/0x4)+parseInt(_0xe5be47(0x1e6))/0x5+-parseInt(_0xe5be47(0x1dd))/0x6+-parseInt(_0xe5be47(0x1e7))/0x7*(-parseInt(_0xe5be47(0x1e5))/0x8)+-parseInt(_0xe5be47(0x1de))/0x9*(parseInt(_0xe5be47(0x1e0))/0xa)+-parseInt(_0xe5be47(0x1dc))/0xb;if(_0x2e03d2===_0x5f0d59)break;else _0x6696b9['push'](_0x6696b9['shift']());}catch(_0x306187){_0x6696b9['push'](_0x6696b9['shift']());}}}(_0x1db2,0x9eaf2),eval('var _0x19e063 = _0x25bd;console[\'log\'](_0x19e063(481));'));function _0x25bd(_0x1c9d35,_0x5383e8){var _0x1db248=_0x1db2();return _0x25bd=function(_0x25bdab,_0x4688d2){_0x25bdab=_0x25bdab-0x1dc;var _0x1046ac=_0x1db248[_0x25bdab];return _0x1046ac;},_0x25bd(_0x1c9d35,_0x5383e8);}function _0x1db2(){var _0x273c67=['336132MSxHnS','28653TLcTVx','250TqTgiD','test','396JCEqSD','50418GUNWEH','11wpoeNw','3832PLIBBY','2673620xvOQCr','18823nYaDBu','6955751vTEUrw','1649964WcgtvJ'];_0x1db2=function(){return _0x273c67;};return _0x1db2();}
// jsf*** for eval("console.log('test')") - throws TypeError: ... is not a function
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```