a2e12f3d37
Implement eval() as a sentinel-intercepted builtin that parses and executes code strings at runtime with proper scope and strict mode handling. Direct eval inherits caller scope (vars leak in non-strict), while indirect and strict eval contain declarations via function scope. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
13 lines
430 B
JavaScript
13 lines
430 B
JavaScript
// eval() edge cases — non-string passthrough, empty string, throw propagation,
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// indirect-eval var isolation, doubly-parenthesized direct eval
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console.log(eval(null));
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console.log(eval(''));
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var caught;
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try { eval('throw 42'); } catch(e) { caught = e; }
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console.log(caught);
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var e = eval;
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e('var leaked = 1');
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try { leaked; console.log('bad'); } catch(_) { console.log('isolated'); }
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((eval))('var dp = 55');
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console.log(dp);
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