Class EmscriptenProvider

constructor

• new EmscriptenProvider(provider: Provider): EmscriptenProvider

• Wraps a JavaScript Provider to make it usable by the WASM module.

  Parameters

  • provider: Provider

    The JavaScript Provider implementation to wrap.

  Returns EmscriptenProvider

ReadonlyobjectId

ReadonlyproviderPtr

confirmTransaction

• confirmTransaction(txId: string, timeout?: number): Promise<boolean>

• Wait for a transaction to be confirmed on-chain.

  Parameters

  • txId: string

    Transaction id to confirm.
  • Optionaltimeout: number

    Optional timeout in milliseconds.

  Returns Promise<boolean>

  A promise that resolves to true if confirmed, otherwise false.

evaluateTransaction

• evaluateTransaction(tx: string, additionalUtxos?: UTxO[]): Promise<Redeemer[]>

• Evaluate a transaction to get its execution costs.

  Parameters

  • tx: string

    Transaction payload to evaluate.
  • OptionaladditionalUtxos: UTxO[]

    Optional extra UTxOs to consider.

  Returns Promise<Redeemer[]>

  A promise that resolves to a list of redeemers with execution units.

getName

• getName(): string

• Gets the human-readable name of the provider (e.g., "Blockfrost").

  Returns string

  The name of the provider.

getNetworkMagic

• getNetworkMagic(): NetworkMagic

• Gets the network magic/ID for the provider.

  Returns NetworkMagic

  The network identifier.

getParameters

• getParameters(): Promise<ProtocolParameters>

• Fetch the current protocol parameters for the network.

  Returns Promise<ProtocolParameters>

  A promise that resolves to the protocol parameters.

getRewardsBalance

• getRewardsBalance(rewardAccount: string | RewardAddress): Promise<bigint>

• Get the current staking rewards balance for a reward account.

  Parameters

  • rewardAccount: string | RewardAddress

    Reward account address or bech32 string.

  Returns Promise<bigint>

  A promise that resolves to the balance in lovelace.

getUnspentOutputByNft

• getUnspentOutputByNft(assetId: string): Promise<UTxO>

• Find the single UTxO that holds a given NFT.

  Parameters

  • assetId: string

    NFT asset identifier.

  Returns Promise<UTxO>

  A promise that resolves to the UTxO containing the NFT.

getUnspentOutputs

• getUnspentOutputs(address: string | Address): Promise<UTxO[]>

• List all unspent transaction outputs (UTxOs) controlled by an address.

  Parameters

  • address: string | Address

    Payment address. Address object or bech32 string.

  Returns Promise<UTxO[]>

  A promise that resolves to an array of UTxOs.

getUnspentOutputsWithAsset

• getUnspentOutputsWithAsset(
      address: string | Address,
      assetId: string,
  ): Promise<UTxO[]>

• List all UTxOs for an address that contain a specific asset.

  Parameters

  • address: string | Address

    Payment address. Address object or bech32 string.
  • assetId: string

    Asset identifier (policyId + asset name hex).

  Returns Promise<UTxO[]>

  A promise that resolves to matching UTxOs.

resolveDatum

• resolveDatum(datumHash: string): Promise<string>

• Fetch an on-chain datum by its hash.

  Parameters

  • datumHash: string

    Hash of the datum.

  Returns Promise<string>

  A promise that resolves to the datum payload (hex-encoded CBOR).

resolveUnspentOutputs

• resolveUnspentOutputs(txIns: TxIn[]): Promise<UTxO[]>

• Resolve concrete UTxOs for a list of transaction inputs.

  Parameters

  • txIns: TxIn[]

    Inputs to resolve.

  Returns Promise<UTxO[]>

  A promise that resolves to an array of UTxOs.

submitTransaction

• submitTransaction(tx: string): Promise<string>

• Submit a signed transaction to the network.

  Parameters

  • tx: string

    Transaction payload (hex-encoded CBOR).

  Returns Promise<string>

  A promise that resolves to the submitted transaction id.