fix: parseInt/parseFloat return NaN for non-numeric strings#257
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Summary
parseInt("abc")returned0instead ofNaN— now correctly returnsNaNparseFloat("xyz")had the same bug — also fixedstrtol/strtodreturn 0 for unparseable input; we now check the endptr to detect if any characters were consumedparseInt("")also now correctly returnsNaNTest plan
builtins/parseint-nan.tscovers valid, invalid, empty, negative, and zero inputsnpm run verify:quickpasses (tests + Stage 1 self-hosting)🤖 Generated with Claude Code