JSON Stringify Options

JSON.stringify() works very nicely for many things, but occasionally you want to handle something it does not support - or handle it differently. json-stringify-opts provides options for specifying:

1. depth Number | Function - the depth at which values should be replaced by information about the value. When used as a function, it takes the form (depthInfo, k, v) => replacement. maxDepth can also be used to set the depth and is most useful when you want to set both a depth replacer function and the depth at which
2. cycle Boolean | Function - detect cycles and replace them with information about the cyclic reference. When used as a function, it takes the form (cycleInfo, k, v) => replacement.
3. unsupported Boolean | Function - detect unsupported values and replace them with information about the value. When used as a function, it takes the form (unsupportedInfo, k, v) => replacement.
4. replacer - passthrough to json.stringify()'s replacer parameter.
5. space - passthrough to json.stringify()'s space parameter.

TODO

• add a toJSON option that detects when a value's toJSON() method is about to be called and wraps the result in an object that also contains a type descriptor to facilitate restoring the actual type when parsing.
• actually document how and why you'd want to use this module (it's not for every scenario!)