lib: mkdirp before writing files

Author: gerkai

lib/file.js

@@ -1,8 +1,15 @@
 'use strict';
 
 const fs = require('fs');
+const mkdirp = require('mkdirp');
+const path = require('path');
 
 exports.writeFile = function(file, content) {
+  const parts = path.parse(file);
+  if (!fs.existsSync(parts.dir)) {
+    mkdirp.sync(parts.dir);
+  }
+  // TODO(joyeecheung): what if the file is a dir?
   fs.writeFileSync(file, content, 'utf8');
 };
 

lib/session.js

@@ -4,8 +4,6 @@ const path = require('path');
 const fs = require('fs');
 const { getMergedConfig, getNcuDir } = require('./config');
 const rimraf = require('rimraf');
-const mkdirp = require('mkdirp');
-
 const { readJson, writeJson, readFile, writeFile } = require('./file');
 const APPLYING = 'applying';
 const STARTED = 'started';
@@ -59,7 +57,6 @@ class Session {
   }
 
   startLanding() {
-    mkdirp.sync(this.pullDir);
     writeJson(this.sessionPath, {
       state: STARTED,
       prid: this.prid,