Readme, read snapshot name from package.json

1 files changed, 10 insertions, 1 deletions

diff --git a/packages/migrations/src/migrate_snapshot.ts b/packages/migrations/src/migrate_snapshot.ts
index f9b7751a5..13fb063da 100644
--- a/packages/migrations/src/migrate_snapshot.ts
+++ b/packages/migrations/src/migrate_snapshot.ts
@@ -2,6 +2,9 @@
 import { devConstants, web3Factory } from '@0x/dev-utils';
 import { logUtils } from '@0x/utils';
 import { Provider } from 'ethereum-types';
+import * as fs from 'fs';
+import * as _ from 'lodash';
+import * as path from 'path';
 
 import { runMigrationsAsync } from './migration';
 
@@ -9,8 +12,14 @@ import { runMigrationsAsync } from './migration';
     let providerConfigs;
     let provider: Provider;
     let txDefaults;
+    const packageJsonPath = path.join(__dirname, '..', 'package.json');
+    const packageJsonString = fs.readFileSync(packageJsonPath, 'utf8');
+    const packageJson = JSON.parse(packageJsonString);
+    if (_.isUndefined(packageJson.config) || _.isUndefined(packageJson.config.snapshot_name)) {
+        throw new Error(`Did not find 'snapshot_name' key in package.json config`);
+    }
 
-    providerConfigs = { shouldUseInProcessGanache: true, ganacheDatabasePath: '0x_ganache_snapshot' };
+    providerConfigs = { shouldUseInProcessGanache: true, ganacheDatabasePath: packageJson.config.snapshot_name };
     provider = web3Factory.getRpcProvider(providerConfigs);
     txDefaults = {
         from: devConstants.TESTRPC_FIRST_ADDRESS,