title: heroku push rejected failed to compile node.js app
body: <p>I get the following error message on pushing to heroku:</p>
  
  <pre><code>Counting objects: 21, done.
  Delta compression using up to 4 threads.
  Compressing objects: 100% (19/19), done.
  Writing objects: 100% (21/21), 3.44 KiB, done.
  Total 21 (delta 5), reused 0 (delta 0)
  
  -----&gt; Node.js app detected
  -----&gt; Resolving engine versions
  
     WARNING: No version of Node.js specified in package.json, see:
     https://devcenter.heroku.com/articles/nodejs-versions
  
     Using Node.js version: 0.10.5
     Using npm version: 1.2.18
  -----&gt; Fetching Node.js binaries
  -----&gt; Vendoring node into slug
  -----&gt; Installing dependencies with npm
     npm ERR! install Couldn't read dependencies
     npm ERR! Failed to parse json
     npm ERR! Unexpected token }
     npm ERR! File: /tmp/build_1nxuppeok7fl7/package.json
     npm ERR! Failed to parse package.json data.
     npm ERR! package.json must be actual JSON, not just JavaScript.
     npm ERR! 
     npm ERR! This is not a bug in npm.
     npm ERR! Tell the package author to fix their package.json file. JSON.parse
  
     npm ERR! System Linux 2.6.32-350-ec2
     npm ERR! command "/tmp/node-node-8tU8/bin/node" "/tmp/node-npm-iUEr/cli.js" "install" "--production"
     npm ERR! cwd /tmp/build_1nxuppeok7fl7
     npm ERR! node -v v0.10.5
     npm ERR! npm -v 1.2.18
     npm ERR! file /tmp/build_1nxuppeok7fl7/package.json
     npm ERR! code EJSONPARSE
     npm ERR! 
     npm ERR! Additional logging details can be found in:
     npm ERR!     /tmp/build_1nxuppeok7fl7/npm-debug.log
     npm ERR! not ok code 0
     !     Failed to install --production dependencies with npm
     0 info it worked if it ends with ok
     1 verbose cli [ '/tmp/node-node-8tU8/bin/node',
     1 verbose cli   '/tmp/node-npm-iUEr/cli.js',
     1 verbose cli   'install',
     1 verbose cli   '--production' ]
     2 info using npm@1.2.18
     3 info using node@v0.10.5
     4 verbose read json /tmp/build_1nxuppeok7fl7/package.json
     5 error install Couldn't read dependencies
     6 error Failed to parse json
     6 error Unexpected token }
     7 error File: /tmp/build_1nxuppeok7fl7/package.json
     8 error Failed to parse package.json data.
     8 error package.json must be actual JSON, not just JavaScript.
     8 error
     8 error This is not a bug in npm.
     8 error Tell the package author to fix their package.json file. JSON.parse
     9 error System Linux 2.6.32-350-ec2
     10 error command "/tmp/node-node-8tU8/bin/node" "/tmp/node-npm-iUEr/cli.js"          "install" "--production"
     11 error cwd /tmp/build_1nxuppeok7fl7
     12 error node -v v0.10.5
     13 error npm -v 1.2.18
     14 error file /tmp/build_1nxuppeok7fl7/package.json
     15 error code EJSONPARSE
     16 verbose exit [ 1, true ]
     !     Heroku push rejected, failed to compile Node.js app
  
    To git@heroku.com:hidden-hamlet-7335.git
    ! [remote rejected] master -&gt; master (pre-receive hook declined)
    error: failed to push some refs to 'git@heroku.com:hidden-hamlet-7335.git'
  </code></pre>
  
  <p>And here's my package.json(In case you want to know I have installed dependencies     locally and package.json works)</p>
  
  <pre><code>  {
      "name": "Simple-chat-application",
      "version": "0.0.1",
      "private": true,
      "scripts": {
        "start": "node app"
      },
      "dependencies": {
        "express": "3.1.0",
        "jade": "0.28.1",
        "socket.io": "0.9.13"
      },
      "engines": {
        "node": "0.10.x",
        "npm": "1.2.x"
      }
   }
  </code></pre>