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-rw-r--r--packages/dev-utils/src/blockchain_lifecycle.ts12
1 files changed, 10 insertions, 2 deletions
diff --git a/packages/dev-utils/src/blockchain_lifecycle.ts b/packages/dev-utils/src/blockchain_lifecycle.ts
index abca6d386..9bd65ee5d 100644
--- a/packages/dev-utils/src/blockchain_lifecycle.ts
+++ b/packages/dev-utils/src/blockchain_lifecycle.ts
@@ -1,5 +1,6 @@
import { logUtils } from '@0xproject/utils';
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
@@ -12,12 +13,13 @@ export class BlockchainLifecycle {
private _web3Wrapper: Web3Wrapper;
private _snapshotIdsStack: number[];
private _addresses: string[] = [];
+ private _nodeType: NodeType | undefined;
constructor(web3Wrapper: Web3Wrapper) {
this._web3Wrapper = web3Wrapper;
this._snapshotIdsStack = [];
}
public async startAsync(): Promise<void> {
- const nodeType = await this._web3Wrapper.getNodeTypeAsync();
+ const nodeType = await this._getNodeTypeAsync();
switch (nodeType) {
case NodeType.Ganache:
const snapshotId = await this._web3Wrapper.takeSnapshotAsync();
@@ -38,7 +40,7 @@ export class BlockchainLifecycle {
}
}
public async revertAsync(): Promise<void> {
- const nodeType = await this._web3Wrapper.getNodeTypeAsync();
+ const nodeType = await this._getNodeTypeAsync();
switch (nodeType) {
case NodeType.Ganache:
const snapshotId = this._snapshotIdsStack.pop() as number;
@@ -76,4 +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;
+ }
}