createSignableVoucher

Creates a signable voucher object from an interaction for signing purposes.

A voucher is a standardized representation of a transaction that contains all the necessary information for signing and submitting to the Flow network. This function transforms an interaction object into a voucher format.

Import

You can import the entire package and access the function:

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import * as fcl from "@onflow/fcl"

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fcl.createSignableVoucher(ix)

Or import directly the specific function:

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import { createSignableVoucher } from "@onflow/fcl"

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createSignableVoucher(ix)

Usage

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import * as fcl from "@onflow/fcl";

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import { createSignableVoucher } from "@onflow/sdk"

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// Build a transaction interaction

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const interaction = await fcl.build([

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fcl.transaction`

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transaction(amount: UFix64) {

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prepare(account: AuthAccount) {

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log(amount)

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}

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}

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`,

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fcl.args([fcl.arg("10.0", fcl.t.UFix64)]),

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fcl.proposer(proposerAuthz),

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fcl.payer(payerAuthz),

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fcl.authorizations([authorizerAuthz]),

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fcl.limit(100)

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]);

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// Create a voucher for signing

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const voucher = createSignableVoucher(interaction);

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console.log(voucher.cadence); // The Cadence script

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console.log(voucher.arguments); // The transaction arguments

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console.log(voucher.proposalKey); // Proposer account details

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console.log(voucher.authorizers); // List of authorizer addresses

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// The voucher can now be signed and submitted

Parameters

ix

• Type: Interaction
• Description: The interaction object containing transaction details

Returns

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{

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cadence: string;

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refBlock: string;

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computeLimit: number;

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arguments: any[];

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proposalKey: {

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address: string;

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keyId: string | number;

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sequenceNum: number;

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} | {

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address?: undefined;

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keyId?: undefined;

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sequenceNum?: undefined;

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};

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payer: string;

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authorizers: string[];

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payloadSigs: {

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address: string;

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keyId: string | number;

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sig: string;

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}[];

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envelopeSigs: {

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address: string;

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keyId: string | number;

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sig: string;

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}[];

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}

A voucher object containing all transaction data and signatures

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