Class TransactionBuilder

constructor

• new TransactionBuilder(
      connection: Connection,
      wallet: Wallet,
      defaultOpts?: TransactionBuilderOptions,
  ): TransactionBuilder

  Parameters

  • connection: Connection
  • wallet: Wallet
  • OptionaldefaultOpts: TransactionBuilderOptions

  Returns TransactionBuilder

Readonlyconnection

Readonlyopts

Readonlywallet

addInstruction

• addInstruction(instruction: Instruction): TransactionBuilder

  Append an instruction into this builder.

  Parameters

  • instruction: Instruction

    An Instruction

  Returns TransactionBuilder

  Returns this transaction builder.

addInstructions

• addInstructions(instructions: Instruction[]): TransactionBuilder

  Append a list of instructions into this builder.

  Parameters

  • instructions: Instruction[]

    A list of Instructions

  Returns TransactionBuilder

  Returns this transaction builder.

addSigner

• addSigner(signer: Signer): TransactionBuilder

  Parameters

  • signer: Signer

  Returns TransactionBuilder

build

• build(userOptions?: Partial<BuildOptions>): Promise<TransactionPayload>

  Constructs a transaction payload with the gathered instructions

  Parameters

  • OptionaluserOptions: Partial<BuildOptions>

    Options to override the default build options

  Returns Promise<TransactionPayload>

  a TransactionPayload object that can be excuted or agregated into other transactions

buildAndExecute

• buildAndExecute(
      options?: Partial<BuildOptions>,
      sendOptions?: Partial<SendOptions>,
      confirmCommitment?: Commitment,
  ): Promise<string>

  Constructs a transaction payload with the gathered instructions, sign it with the provider and send it out

  Parameters

  • Optionaloptions: Partial<BuildOptions>

    Options to build the transaction. . Overrides the default options provided in the constructor.

  • OptionalsendOptions: Partial<SendOptions>

    Options to send the transaction. Overrides the default options provided in the constructor.

  • OptionalconfirmCommitment: Commitment

    Commitment level to wait for transaction confirmation. Overrides the default options provided in the constructor.

  Returns Promise<string>

  the txId of the transaction

buildSync

• buildSync(options: SyncBuildOptions): TransactionPayload

  Constructs a transaction payload with the gathered instructions synchronously

  Parameters

  • options: SyncBuildOptions

    Options used to build the transaction

  Returns TransactionPayload

  a TransactionPayload object that can be excuted or agregated into other transactions

compressIx

• compressIx(compressPost: boolean): Instruction

  Compresses all instructions & signers in this builder into one single instruction

  Parameters

  • compressPost: boolean

    Compress all post instructions into the instructions field

  Returns Instruction

  Instruction object containing all

estimateFee

• estimateFee(
      getPriorityFeePerUnit?: (
          lockedWritableAccounts: PublicKey[],
      ) => Promise<RecentPrioritizationFees[]>,
      computeLimitMargin?: number,
      selectionPercentile?: number,
      lookupTableAccounts?: AddressLookupTableAccount[],
  ): Promise<
      {
          estConsumedComputeUnits: number;
          estPriorityFeeInLamports: number;
          estPriorityFeePerUnitInLamports: RecentPrioritizationFees[];
      },
  >

  Estimates the fee for this transaction

  Parameters

  • OptionalgetPriorityFeePerUnit: (lockedWritableAccounts: PublicKey[]) => Promise<RecentPrioritizationFees[]>

    A function to get the priority fee per unit

  • OptionalcomputeLimitMargin: number

    The margin for the compute budget limit

  • OptionalselectionPercentile: number

    The percentile to use when calculating the priority fee

  • OptionallookupTableAccounts: AddressLookupTableAccount[]

    The lookup table accounts that will be used in the transaction

  Returns Promise<
      {
          estConsumedComputeUnits: number;
          estPriorityFeeInLamports: number;
          estPriorityFeePerUnitInLamports: RecentPrioritizationFees[];
      },
  >

  An object containing the estimated values for consumed compute units, priority fee per unit in lamports, and the total priority fee in lamports

isEmpty

• isEmpty(): boolean

  Checks whether this builder contains any instructions.

  Returns boolean

  Whether this builder contains any instructions.

prependInstruction

• prependInstruction(instruction: Instruction): TransactionBuilder

  Prepend a list of instructions into this builder.

  Parameters

  • instruction: Instruction

    An Instruction

  Returns TransactionBuilder

  Returns this transaction builder.

prependInstructions

• prependInstructions(instructions: Instruction[]): TransactionBuilder

  Prepend a list of instructions into this builder.

  Parameters

  • instructions: Instruction[]

    A list of Instructions

  Returns TransactionBuilder

  Returns this transaction builder.

txnSize

• txnSize(userOptions?: Partial<BuildOptions>): number

  Returns the size of the current transaction in bytes. Measurement method can differ based on the maxSupportedTransactionVersion.

  Parameters

  • OptionaluserOptions: Partial<BuildOptions>

    Options to override the default build options

  Returns number

  the size of the current transaction in bytes.

  Throws

  error if there is an error measuring the transaction size. This can happen if the transaction is too large, or if the transaction contains too many keys to be serialized.