Function decode

Decode an ABI encoded buffer with the specified types. The types must be valid Solidity ABI types.

This will attempt to infer the output types from the input types. For example, if you use uint256 as an input type, the output type will be bigint. This does not work for all types, however. For example, if you use nested array types or tuple types, the output type will be unknown.

The resulting types of the values will be as follows:

Contract ABI Type	Resulting JavaScript Type
address	string
bool	boolean
bytes(n)	Uint8Array
function	SolidityFunction
int(n)	bigint
string	string
tuple	Array
array	Array
uint(n)	bigint

Example

import { encode, decode } from '@metamask/abi-utils';

const types = ['uint256', 'string'];
const encoded = encode(types, [42, 'Hello, world!']);
const decoded = decode(types, encoded);

console.log(decoded); // [42n, 'Hello, world!']

See

https://docs.soliditylang.org/en/v0.8.17/abi-spec.html#types

Returns

The decoded values as array.