serialize

Serializes a Flow transaction or script to a JSON-formatted signable voucher that can be used for offline signing or inspection. This is useful for creating signable transactions that can be signed by external wallets or hardware devices.

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.serialize(args, opts)

Or import directly the specific function:

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import { serialize } from "@onflow/fcl"

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serialize(args, opts)

Usage

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// Serialize a simple transaction

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import * as fcl from "@onflow/fcl"

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const voucher = await fcl.serialize([

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fcl.transaction`

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transaction(amount: UFix64, to: Address) {

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prepare(signer: AuthAccount) {

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// Transaction logic here

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}

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}

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`,

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fcl.args([

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fcl.arg("10.0", fcl.t.UFix64),

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fcl.arg("0x01", fcl.t.Address)

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]),

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fcl.proposer(authz),

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fcl.payer(authz),

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fcl.authorizations([authz])

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])

Parameters

args

• Type: (false | InteractionBuilderFn)[] | Interaction
• Description: Array of interaction builder functions or a pre-built interaction object. Builder functions are typically from

opts (optional)

• Type:

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export interface SerializeOptions {

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resolve?: InteractionBuilderFn

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}

• Description: Optional configuration object

Properties:

• resolve - Custom resolve function to use instead of the default

Returns

Promise<string>

A JSON string representation of the signable voucher that contains all the transaction details needed for signing

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