Improve Base62 encoding/decoding performance and robustness#3391

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redouan-rhazouani wants to merge 7 commits intonetbirdio:mainfrom redouan-rhazouani:fix_perf_base62

Commits on Feb 26, 2025

Enhance Base62 unit tests by explicitly verifying encoding and decoding accuracy
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Reduce heap allocations and improves performance of base62.Encode by avoiding dynamic memory usage for small, fixed-size data
redouan-rhazouani
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[Base62.Decode] use iterative multiplication instead of math.Pow() to avoid less precise floating point operations
redouan-rhazouani
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[Base62.Decode] return error if input string is empty
redouan-rhazouani
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Add overflow check when calculating the decoded value to prevent silent overflow of uint32
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[Base62.Decode] add unit test for input strings containing invalid character
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[Base62.Decode] optimize decoding by replacing strings.IndexRune with a fixed-size array for O(1) lookups, improving performance and reducing memory overhead
redouan-rhazouani
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