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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/viem/_esm/actions/public

Просмотр файла: simulateContract.js

import { parseAccount, } from '../../accounts/utils/parseAccount.js';
import { decodeFunctionResult, } from '../../utils/abi/decodeFunctionResult.js';
import { encodeFunctionData, } from '../../utils/abi/encodeFunctionData.js';
import { getContractError, } from '../../utils/errors/getContractError.js';
import { getAction } from '../../utils/getAction.js';
import { call } from './call.js';
/**
 * Simulates/validates a contract interaction. This is useful for retrieving **return data** and **revert reasons** of contract write functions.
 *
 * - Docs: https://viem.sh/docs/contract/simulateContract
 * - Examples: https://stackblitz.com/github/wevm/viem/tree/main/examples/contracts_writing-to-contracts
 *
 * This function does not require gas to execute and _**does not**_ change the state of the blockchain. It is almost identical to [`readContract`](https://viem.sh/docs/contract/readContract), but also supports contract write functions.
 *
 * Internally, uses a [Public Client](https://viem.sh/docs/clients/public) to call the [`call` action](https://viem.sh/docs/actions/public/call) with [ABI-encoded `data`](https://viem.sh/docs/contract/encodeFunctionData).
 *
 * @param client - Client to use
 * @param parameters - {@link SimulateContractParameters}
 * @returns The simulation result and write request. {@link SimulateContractReturnType}
 *
 * @example
 * import { createPublicClient, http } from 'viem'
 * import { mainnet } from 'viem/chains'
 * import { simulateContract } from 'viem/contract'
 *
 * const client = createPublicClient({
 *   chain: mainnet,
 *   transport: http(),
 * })
 * const result = await simulateContract(client, {
 *   address: '0xFBA3912Ca04dd458c843e2EE08967fC04f3579c2',
 *   abi: parseAbi(['function mint(uint32) view returns (uint32)']),
 *   functionName: 'mint',
 *   args: ['69420'],
 *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
 * })
 */
export async function simulateContract(client, parameters) {
    const { abi, address, args, dataSuffix, functionName, ...callRequest } = parameters;
    const account = callRequest.account
        ? parseAccount(callRequest.account)
        : client.account;
    const calldata = encodeFunctionData({ abi, args, functionName });
    try {
        const { data } = await getAction(client, call, 'call')({
            batch: false,
            data: `${calldata}${dataSuffix ? dataSuffix.replace('0x', '') : ''}`,
            to: address,
            ...callRequest,
            account,
        });
        const result = decodeFunctionResult({
            abi,
            args,
            functionName,
            data: data || '0x',
        });
        const minimizedAbi = abi.filter((abiItem) => 'name' in abiItem && abiItem.name === parameters.functionName);
        return {
            result,
            request: {
                abi: minimizedAbi,
                address,
                args,
                dataSuffix,
                functionName,
                ...callRequest,
                account,
            },
        };
    }
    catch (error) {
        throw getContractError(error, {
            abi,
            address,
            args,
            docsPath: '/docs/contract/simulateContract',
            functionName,
            sender: account?.address,
        });
    }
}
//# sourceMappingURL=simulateContract.js.map

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