Fixed creation of claimTrieCache.json.

Fixes #22

package.json

@@ -39,6 +39,7 @@
     "chalk": "^2.0.1",
     "elastic-queue": "^0.3.0",
     "elasticsearch": "^13.2.0",
+    "file-exists": "^4.0.0",
     "glob": "^7.1.1",
     "jsonfile": "^3.0.1",
     "jsonwebtoken": "^7.2.1",

server/utils/importer/index.js

@@ -10,6 +10,8 @@ import jsonfile from 'jsonfile';
 import path from 'path';
 import rp from 'request-promise';
 import appRoot from 'app-root-path';
+import fs from 'fs';
+import fileExists from 'file-exists';
 
 const loggerStream = winstonStream(winston, 'info');
 const eclient = new elasticsearch.Client({
@@ -33,6 +35,12 @@ let status = {};
 
 export async function sync () {
   try {
+    fileExists(path.join(appRoot.path, 'claimTrieCache.json'), (err, exists) => {
+      if (err) { throw err };
+      if (!exists) {
+        fs.writeFileSync(path.join(appRoot.path, 'claimTrieCache.json'), '[]');
+      }
+    });
     status.info = 'Grabbing the claimTrie...';
     let claimTrie = await client.getClaimsInTrie().then(claimtrie => { return claimtrie }).catch(err => { throw err });
     let txList = [];

yarn.lock

@@ -1472,6 +1472,10 @@ file-entry-cache@^2.0.0:
     flat-cache "^1.2.1"
     object-assign "^4.0.1"
 
+file-exists@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/file-exists/-/file-exists-4.0.0.tgz#104eacf25d3fd6b3e462951ae923533195ffb52b"
+
 filename-regex@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/filename-regex/-/filename-regex-2.0.1.tgz#c1c4b9bee3e09725ddb106b75c1e301fe2f18b26"