Positive exponents are truncated when repairing incomplete JSON #230

Version of the library

0.63.4, also reproduced on main at 0a7317e.

Describe the bug

Repairing a response with a missing closing brace changes a valid number with a positive exponent. 1e+10 becomes 1. In an array, the exponent becomes a separate string element.

How to reproduce

from json_repair import repair_json

print(repair_json('{"value": 1e+10', return_objects=True))
# {'value': 1}
print(repair_json('[1e+10, 2', return_objects=True))
# [1, 'e+10', 2]

Expected behavior

The results should be {'value': 10000000000.0} and [10000000000.0, 2]. Repairing the missing delimiter should preserve the number. Negative exponents such as 1e-10 already survive this repair.

I plan to add a focused fix and regression tests for object, array, and file input.

A tested fix is available on fix/positive-exponent-repair. This repository currently restricts PR creation to collaborators, so I could not open the corresponding upstream PR.