fix: perf improvement for rfc4648 base decoding #323
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devinivy
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## [13.3.5](v13.3.4...v13.3.5) (2025-05-20) ### Bug Fixes * **perf:** improve rfc4648 base decoding ([#323](#323)) ([900b5f6](900b5f6))
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🎉 This PR is included in version 13.3.5 🎉 The release is available on: Your semantic-release bot 📦🚀 |
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Making a performance improvement here to rfc4648 base decoding (e.g. base64, base32, base16). On each decoding call we were building-up a dictionary mapping alphabet characters to their index—now this dictionary is built ahead of time.
Benching
CID.parse()against 100,000 base32 CIDs sees an improvement of about 33-35% with this change (node v22.15.1 / macOS / ARM).