feature: add fetch-params spawn process

config/daemon/run-fetch-params.js

@@ -0,0 +1,23 @@
+// @flow
+import cp from 'child_process';
+import path from 'path';
+
+import getBinariesPath from './get-binaries-path';
+import log from './logger';
+
+export default (): Promise<*> => new Promise((resolve, reject) => {
+  log('Fetching params');
+  const processName = path.join(getBinariesPath(), 'zcash-fetch-params');
+
+  const childProcess = cp.spawn(processName);
+
+  childProcess.stdout.on('data', data => log(data.toString()));
+  childProcess.stderr.on('data', data => log(data.toString()));
+  childProcess.on('error', reject);
+  childProcess.on('exit', (code, err) => {
+    if (code !== 0 || err) {
+      reject(new Error(err));
+    }
+    resolve();
+  });
+});