feat(transaction): expose to_bytes() and from_bytes() for consensus serialization

[darioAnongba]

Summary

Adds Transaction.to_bytes() and Transaction.from_bytes() methods for consensus-encoded byte serialization/deserialization.

Motivation

The Transaction type currently has no serialization path, making it impossible to:

• Pass transactions between WASM modules (e.g. BDK → LDK for channel funding)
• Broadcast via APIs that expect raw bytes/hex
• Store raw transactions in IndexedDB or send over WebSocket

Every other major type (Psbt, ChangeSet) has serialization — Transaction was the gap.

API

// Serialize to Uint8Array
const txBytes: Uint8Array = transaction.to_bytes()

// Deserialize from Uint8Array
const tx: Transaction = Transaction.from_bytes(txBytes)

Implementation

Thin wrapper around bitcoin::consensus::serialize / deserialize. wasm_bindgen handles Vec<u8> ↔ Uint8Array conversion automatically. Trivial enough that dedicated tests would be more maintenance than value.

Use case: LDK channel funding

const tx = psbt.extract_tx()
const rawTx = tx.to_bytes()
channelManager.funding_transaction_generated(tempChannelId, counterpartyNodeId, rawTx)

Closes #38

[darioAnongba]

Missing tests?

[ConorOkus]

Thanks, @darioAnongba. How often are you releasing new versions of this package?

[darioAnongba]

Thanks, @darioAnongba. How often are you releasing new versions of this package?

There is no fixed schedule. v0.3.0 is released with this feature though, check the CHANGELOG.