Build issue, strict mode required for conformance to in-house guidelines

Would it be possible to add 'use strict'; to json3?
Does the code conform to the requirements of using strict mode?

Part of our in-house build script uses JSLint to check Javascript modules.
One of the requirements is that all modules must be processed in strict mode.
Also as part of open-source agreement we are not permitted to modify the source directly.

Best regards,

Mark 
