Using version ^1.7 for npm-asset/socket.io          
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - npm-asset/socket.io 1.7.2 requires npm-asset/engine.io 1.8.2 -> satisfiable by npm-asset/engine.io[1.8.2].
    - npm-asset/socket.io 1.7.3 requires npm-asset/engine.io 1.8.3 -> satisfiable by npm-asset/engine.io[1.8.3].
    - npm-asset/socket.io 1.7.0 requires npm-asset/engine.io 1.8.1 -> satisfiable by npm-asset/engine.io[1.8.1].
    - npm-asset/socket.io 1.7.1 requires npm-asset/engine.io 1.8.1 -> satisfiable by npm-asset/engine.io[1.8.1].
    - npm-asset/engine.io 1.8.2 requires npm-asset/engine.io-parser 1.3.2 -> satisfiable by npm-asset/engine.io-parser[1.3.2].
    - npm-asset/engine.io 1.8.3 requires npm-asset/engine.io-parser 1.3.2 -> satisfiable by npm-asset/engine.io-parser[1.3.2].
    - npm-asset/engine.io 1.8.1 requires npm-asset/engine.io-parser 1.3.1 -> satisfiable by npm-asset/engine.io-parser[1.3.1].
    - npm-asset/engine.io-parser 1.3.2 requires npm-asset/wtf-8 1.0.0 -> no matching package found.
    - npm-asset/engine.io-parser 1.3.1 requires npm-asset/wtf-8 1.0.0 -> no matching package found.
    - Installation request for npm-asset/socket.io ^1.7 -> satisfiable by npm-asset/socket.io[1.7.0, 1.7.1, 1.7.2, 1.7.3].

Potential causes:
 - A typo in the package name
 - The package is not available in a stable-enough version according to your minimum-stability setting
   see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details.

Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.

Installation failed, reverting ./composer.json to its original content.