Flatten generates a flat map from a nested one.

FlattenString generates a flat JSON map from a nested one.

Separate nested key components with dots, e.g.

Nested input must be a map or slice.

JSON nested input must be a map.

Separate with path-like slashes, e.g.

Separate ala Rails, e.g.

Separate with underscores, e.g.

The style of keys.