@justinc/to-validation

Install with:

``
npm i @justinc/to-validation
`

Exports the following function:

`
function toValidation (isValidation, isFailureLike, toFailure, toSuccess, v) {
if (isValidation(v)) return v
if (isFailureLike(v)) return toFailure(v)
return toSuccess(v)
}
`

with one catch, the function can be invoked using "FPO-style" named-arguments (and it's multi-curried).

This means you can invoke it like this:

`
import toValidation from '@justinc/to-validation'
let toV = toValidation({
isValidation: v => {
// your logic for determining if v is a Validation, typically:
// Validation.hasInstance(v),
// see tests.
},
isFailureLike: (v) => {
// your logic for determining if v is failure like
}
})
`

Having supplied the isValidation and isFailureLike parameters (using named-arguments), we only need to supply three more - toFailure, toSuccess, and v (note how we can split up how we want to supply them since the function is multi-curried):

`
let onlyVLeft = toV({
toFailure: (v) => // how you'd change v to a Validation.Failure
toSuccess: () => // how you'd change v to a Validation.Success
})

let asValidation = v => onlyVLeft({ v })
``

- - -

This package is experimental. Only really meant to DRY some code.