# BigIntArrayPackingStrategy

Packs/unpacks arrays of 64-bit BigInt values.

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## Schema tokens

- `"bigint-i64[]"` — signed 64-bit BigInt array
- `"bigint-u64[]"` — unsigned 64-bit BigInt array

## Behaviour

- Accepts `bigint[]`, `BigInt64Array`, or `BigUint64Array`.
- Writes a 16-bit unsigned length prefix.
- Each element is written as 8 bytes (big-endian).