Switch over to Lerna + Yarn Workspaces setup for a mono-repo approach

1 files changed, 31 insertions, 0 deletions

diff --git a/packages/0x.js/test/utils/web3_factory.ts b/packages/0x.js/test/utils/web3_factory.ts
new file mode 100644
index 000000000..b20070c74
--- /dev/null
+++ b/packages/0x.js/test/utils/web3_factory.ts
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+// HACK: web3 injects XMLHttpRequest into the global scope and ProviderEngine checks XMLHttpRequest
+// to know whether it is running in a browser or node environment. We need it to be undefined since
+// we are not running in a browser env.
+// Filed issue: https://github.com/ethereum/web3.js/issues/844
+(global as any).XMLHttpRequest = undefined;
+import ProviderEngine = require('web3-provider-engine');
+import RpcSubprovider = require('web3-provider-engine/subproviders/rpc');
+import * as Web3 from 'web3';
+import {constants} from './constants';
+import {EmptyWalletSubProvider} from '../../src/subproviders/empty_wallet_subprovider';
+
+export const web3Factory = {
+    create(hasAddresses: boolean = true): Web3 {
+        const provider = this.getRpcProvider(hasAddresses);
+        const web3 = new Web3();
+        web3.setProvider(provider);
+        return web3;
+    },
+    getRpcProvider(hasAddresses: boolean = true): Web3.Provider {
+        const provider = new ProviderEngine();
+        const rpcUrl = `http://${constants.RPC_HOST}:${constants.RPC_PORT}`;
+        if (!hasAddresses) {
+            provider.addProvider(new EmptyWalletSubProvider());
+        }
+        provider.addProvider(new RpcSubprovider({
+            rpcUrl,
+        }));
+        provider.start();
+        return provider;
+    },
+};