merge v2-prototype

1 files changed, 9 insertions, 17 deletions

diff --git a/packages/dev-utils/src/blockchain_lifecycle.ts b/packages/dev-utils/src/blockchain_lifecycle.ts
index 587332f1a..9bd65ee5d 100644
--- a/packages/dev-utils/src/blockchain_lifecycle.ts
+++ b/packages/dev-utils/src/blockchain_lifecycle.ts
@@ -1,11 +1,6 @@
 import { logUtils } from '@0xproject/utils';
-import { uniqueVersionIds, Web3Wrapper } from '@0xproject/web3-wrapper';
-import { includes } from 'lodash';
-
-enum NodeType {
-    Geth = 'GETH',
-    Ganache = 'GANACHE',
-}
+import { NodeType, Web3Wrapper } from '@0xproject/web3-wrapper';
+import * as _ from 'lodash';
 
 // HACK(albrow): 🐉 We have to do this so that debug.setHead works correctly.
 // (Geth does not seem to like debug.setHead(0), so by sending some transactions
@@ -18,6 +13,7 @@ export class BlockchainLifecycle {
     private _web3Wrapper: Web3Wrapper;
     private _snapshotIdsStack: number[];
     private _addresses: string[] = [];
+    private _nodeType: NodeType | undefined;
     constructor(web3Wrapper: Web3Wrapper) {
         this._web3Wrapper = web3Wrapper;
         this._snapshotIdsStack = [];
@@ -61,16 +57,6 @@ export class BlockchainLifecycle {
                 throw new Error(`Unknown node type: ${nodeType}`);
         }
     }
-    private async _getNodeTypeAsync(): Promise<NodeType> {
-        const version = await this._web3Wrapper.getNodeVersionAsync();
-        if (includes(version, uniqueVersionIds.geth)) {
-            return NodeType.Geth;
-        } else if (includes(version, uniqueVersionIds.ganache)) {
-            return NodeType.Ganache;
-        } else {
-            throw new Error(`Unknown client version: ${version}`);
-        }
-    }
     private async _mineMinimumBlocksAsync(): Promise<void> {
         logUtils.warn('WARNING: minimum block number for tests not met. Mining additional blocks...');
         if (this._addresses.length === 0) {
@@ -92,4 +78,10 @@ export class BlockchainLifecycle {
         }
         logUtils.warn('Done mining the minimum number of blocks.');
     }
+    private async _getNodeTypeAsync(): Promise<NodeType> {
+        if (_.isUndefined(this._nodeType)) {
+            this._nodeType = await this._web3Wrapper.getNodeTypeAsync();
+        }
+        return this._nodeType;
+    }
 }