immer-alternative

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SylphxAI / craft

⚡ The fastest immutable state library for TypeScript - 1.4-35x faster than immer with 4.6 KB gzipped bundle

performance typescript immutable functional state-management copy-on-write zero-dependencies immer-alternative json-patches

Updated Nov 21, 2025
TypeScript

SylphxAI / Pura

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Returns native JavaScript types (Array/Object/Map/Set). Immutability faster than mutation. Dual mode: immutable + mutable patterns. 100% library compatible.

typescript immutable functional-programming proxy structural-sharing hamt rrb-tree persistent-data-structures dual-mode pure-fp native-types immer-alternative

Updated Nov 22, 2025
TypeScript

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