import {Vector} from './Vector.js'
import {NotAType, Returns} from '#core/Type.js'
import {match} from '#core/TypePatterns.js'

export const promoteUnary = name => match(Vector, (math, V, strategy) => {
   if (V.Component === NotAType) {
      // have to resolve element by element :-(
      return Returns(V, v => v.map(
         elt => math.resolve(name, math.typeOf(elt), strategy)(elt)))
   }
   const compOp = math.resolve(name, V.Component, strategy)
   return Returns(Vector(compOp.returns), v => v.map(elt => compOp(elt)))
})