Custom manifest guide

[kristianmandrup]

Would be nice with a small guide on creating a custom manifest file.
I see the lodash one from fus-ext includes the following to first import lodash into _ variable, then some adds all those functions to ..

_: import "lodash"
..'export: x ->
    # Use lodash to receive all `..`.
    _

A more elegant/intelligent approach where functions available are added depending on type of last return value (I assume). Ie. could be used to add underscore.string functions when x is a string, otherwise lodash etc. Perhaps even Math functions for Number and so on.

..'export: x ->
    if x is String
        feString
    else
        _

For now I'd like to use my powerdash instead of lodash :)

Cheers!