import * as React from 'react'; import { render, hydrate } from 'react-dom'; import context from 'ts/context/trace'; import Base from 'ts/components/Base'; import Content from 'ts/components/Content'; import ContentBlock from 'ts/components/ContentBlock'; import { Tabs, TabBlock } from 'ts/components/Tabs'; import Code from 'ts/components/Code'; import InlineCode from 'ts/components/InlineCode'; import { List, ListItem } from 'ts/components/List'; import TraceComponent from 'ts/components/Trace'; import Breakout from 'ts/components/Breakout'; function Trace() { return ( Use ganache-cli as a backing node. Understand and use web3-provider-engine. npm install @0x/sol-trace --save

Sol-trace is a subprovider that needs to be prepended to your provider engine. Depending on your project setup, you will need to use a specific ArtifactAdapter. Sol-trace ships with the SolCompilerArtifactAdapter for use with{' '} Sol-compiler and TruffleArtifactAdapter for use with the Truffle framework. You can also write your own and support any artifact format.

{`import { SolCompilerArtifactAdapter } from '@0x/sol-trace'; // Both artifactsDir and contractsDir are optional and will be fetched from compiler.json if not passed in const artifactAdapter = new SolCompilerArtifactAdapter(artifactsDir, contractsDir);`} Truffle Custom

Now that we have an artifactAdapter, we can create a{' '} RevertTraceSubprovider and append it to our provider engine.

{`import { ProviderEngine, RpcSubprovider } from 'web3-provider-engine'; import { RevertTraceSubprovider } from '@0x/sol-cov'; const defaultFromAddress = "..."; // Some ethereum address with test funds const revertTraceSubprovider = new RevertTraceSubprovider(artifactAdapter, defaultFromAddress); const providerEngine = new ProviderEngine(); providerEngine.addProvider(revertTraceSubprovider); providerEngine.addProvider(new RpcSubprovider({rpcUrl: 'http://localhost:8545'})); providerEngine.start();`}
); } const root = document.getElementById('app'); if (root.hasChildNodes()) { hydrate(, root); } else { render(, root); }