Validate a limit order

There is the possibility to check limit order validity.
For example, you can check that a limit order is valid by predicates.

LimitOrderProtocolFacade.simulate

LimitOrderProtocolFacade.simulate(
    targetAddress: string,
    calldata: string
)

Under the hood:
On a simulate() call, the contract reverts with error SimulationResults(bool success, bytes res)

Where success indicates that call doesn't revers, and res is a function call result.

LimitOrderProtocolFacade.checkPredicate

LimitOrderProtocolFacade.checkPredicate(
    order: LimitOrder
)

More lightweight version, only predicate field is required in order structure.

Example:

import Web3 from 'web3';
import {
    LimitOrderProtocolFacade,
    LimitOrder,
    Web3ProviderConnector
} from '@1inch/limit-order-protocol-utils';

const contractAddress = limirOrderProtocolAdresses[chainId];
const order: LimitOrder = {...};

const connector = new Web3ProviderConnector(new Web3('...'));
const limitOrderProtocolFacade = new LimitOrderProtocolFacade(contractAddress, chainId, connector);

const {
    success: boolean,
    rawResult: string,
} = await limitOrderProtocolFacade.simulate(contractAddress, order.predicate);
console.log('Order validity: ', success);

const predicateValidity: boolean = limitOrderProtocolFacade.checkPredicate(order);
console.log('Predicate validity: ', predicateValidity);