not

not inverts a Spot into its boolean opposite. Without it, you’d build the same shape by hand:

// without not
const userMissing = shape(fetchUser.result, (user) => !user)
// with not
const userMissing = not(fetchUser.result)

// without not
const notAllDone = shape(every.status([fetchUser, fetchOrder], "done"), (allDone) => !allDone)
// with not
const notAllDone = not(every.status([fetchUser, fetchOrder], "done"))

Arguments

• value: Spot<T> — a Spot, coerced to a boolean and inverted.

Returns

Spot<boolean> — true when the input is falsy; false otherwise.