Hosted Solution for Version Control -- with pre-commit hooks?

Can anyone suggest a hosted solution for SVN, Git, or Mercurial (preferred) that offers the ability to configure certain pre-commit hooks? For example, when JS is committed, I'd like it to pass JSLint. Or if PHP is commi开发者_开发问答tted, I'd like it to pass certain coding conventions.

Suggestions?

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You can use GitHub if you decide to use Git.

Git supports pre-commit hooks

The commit hooks will simply be configured as part of the project, not on GitHub.