decode

Decodes the response from 'fcl.send()' into the appropriate JSON representation of any values returned from Cadence code.

The response from Flow contains encoded values that need to be decoded into JavaScript types. This function handles that conversion, including complex types like structs, arrays, and dictionaries.

Import

You can import the entire package and access the function:

_10

import * as sdk from "@onflow/sdk"

_10

_10

sdk.decode(response)

Or import directly the specific function:

_10

import { decode } from "@onflow/sdk"

_10

_10

decode(response)

Usage

_27

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

_27

_27

// Simple script to add 2 numbers

_27

const response = await fcl.send([

_27

fcl.script`

_27

access(all) fun main(int1: Int, int2: Int): Int {

_27

return int1 + int2

_27

}

_27

`,

_27

fcl.args([fcl.arg(1, fcl.t.Int), fcl.arg(2, fcl.t.Int)])

_27

]);

_27

_27

const decoded = await fcl.decode(response);

_27

console.log(decoded); // 3

_27

console.log(typeof decoded); // "number"

_27

_27

// Complex return types

_27

const complexResponse = await fcl.send([

_27

fcl.script`

_27

access(all) fun main(): {String: Int} {

_27

return {"foo": 1, "bar": 2}

_27

}

_27

`

_27

]);

_27

_27

const complexDecoded = await fcl.decode(complexResponse);

_27

console.log(complexDecoded); // {foo: 1, bar: 2}

Parameters

response

• Type: any
• Description: Should be the response returned from 'fcl.send([...])'

Returns

Promise<any>

---