75bc30bb8e
Implement parsing, evaluation, lexical this capture, and new rejection for arrow functions. Covers expression bodies, block bodies, zero/single/ multi-param forms, and backtracking disambiguation from grouping parens. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
18 lines
512 B
JavaScript
18 lines
512 B
JavaScript
// Arrow functions handle extra and missing arguments the same way as regular functions.
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// Extra arguments beyond declared params are silently ignored.
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var f1 = (x) => x;
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console.log(f1(10, 20, 30));
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// Missing arguments default to undefined.
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var f2 = (x) => x;
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console.log(f2());
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// Two-param arrow: second arg missing → undefined.
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var f3 = (a, b) => b;
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console.log(f3(1));
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// Zero-param arrow called with arguments: args ignored, expression still evaluated.
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var f4 = () => 42;
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console.log(f4(1, 2, 3));
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