path-lookup

lookup path within object.

Installation

Install with component(1):

$ component install yields/path-lookup

Example

{
  user: {
    first_name: 'john'
  }
}

// lookup

var path = lookup(obj, 'User.FirstName', [lower, snake]);
path; // => "['user']['first_name']"

// get
Function('_', 'return _' + path)(obj); // => "john"

// set
Function('_, v', '_' + path + ' = v')(obj, '');

// get
Function('_', 'return _' + path)(obj); // => ""

// delete
Function('_', 'delete _' + path)(window);

// get
Function('_', 'return _' + path)(obj); // => undefined

API

lookup(obj, path, fns)

caveats

you should probably make sure the path exists, before doing anything that will throw.

you can either keep cache of path's and their state { path: '...', exists: true } or just wrap stuff that will throw in a try {} catch {} block.

License

MIT