CFP - Docs - pResolveValues

pResolveValues

async (collection: Collection) => ResolvedCollection

Resolve the values of a collection.

This is basically a generic Promise.all

Try It

const a = Promise.resolve('a')
const b = Promise.resolve('b')

await pResolveValues({ a, b })
// is { a: 'a', b: 'b' }

await pResolveValues([a, b])
// is ['a', 'b']
const a = Promise.resolve('a')
const b = Promise.resolve('b')

await pResolveValues({ a, b })
// is { a: 'a', b: 'b' }

await pResolveValues([a, b])
// is ['a', 'b']

Try It

const a = Promise.resolve('a')
const b = Promise.resolve('b')

await pResolveValues({ a, b })
// is { a: 'a', b: 'b' }

await pResolveValues([a, b])
// is ['a', 'b']
const a = Promise.resolve('a')
const b = Promise.resolve('b')

await pResolveValues({ a, b })
// is { a: 'a', b: 'b' }

await pResolveValues([a, b])
// is ['a', 'b']

Sometimes we want to resolve the values of a collection. Below, we are coding a checkout process for our online store. To prep the order, we need to call the API to get the sales tax and shipping amount. Let's resolve our updated order with those properties assigned.

Try It

const mockSalesTax = 0.08
const mockShipping = 10

const mockStoreApi = {
  getSalesTax: async _order => mockSalesTax,
  getShipping: async _order => mockShipping,
}

const prepOrder = async order =>
  pResolveValues({
    ...order,
    salesTax: mockStoreApi.getSalesTax(order),
    shipping: mockStoreApi.getShipping(order),
  })

const userLocation = 'cleveland'
const shoppingCart = ['broom', 'mop', 'detergent']
const order = {
  cart: shoppingCart,
  destination: userLocation,
}
const updatedOrder = await prepOrder(order)

console.log(updatedOrder)
// prints
// {
//   cart: [broom, mop, detergent]
//   destination: cleveland
//   shipping: 10
//   salesTax: 0.08
// }
type Order = {
  cart: string[]
  destination: string
  salesTax: number
  shipping: number
}

const mockSalesTax = 0.08
const mockShipping = 10

const mockStoreApi = {
  getSalesTax: async (_order: Order) => mockSalesTax,
  getShipping: async (_order: Order) => mockShipping,
}

const prepOrder = async (order: Order) =>
  pResolveValues({
    ...order,
    salesTax: mockStoreApi.getSalesTax(order),
    shipping: mockStoreApi.getShipping(order),
  })

const userLocation = 'cleveland'
const shoppingCart = ['broom', 'mop', 'detergent']
const order = {
  cart: shoppingCart,
  destination: userLocation,
} as Order
const updatedOrder = await prepOrder(order)

console.log(updatedOrder)
// prints
// {
//   cart: [broom, mop, detergent]
//   destination: cleveland
//   shipping: 10
//   salesTax: 0.08
// }

Try It

const mockSalesTax = 0.08
const mockShipping = 10

const mockStoreApi = {
  getSalesTax: async _order => mockSalesTax,
  getShipping: async _order => mockShipping,
}

const prepOrder = async order =>
  pResolveValues({
    ...order,
    salesTax: mockStoreApi.getSalesTax(order),
    shipping: mockStoreApi.getShipping(order),
  })

const userLocation = 'cleveland'
const shoppingCart = ['broom', 'mop', 'detergent']
const order = {
  cart: shoppingCart,
  destination: userLocation,
}
const updatedOrder = await prepOrder(order)

console.log(updatedOrder)
// prints
// {
//   cart: [broom, mop, detergent]
//   destination: cleveland
//   shipping: 10
//   salesTax: 0.08
// }
type Order = {
  cart: string[]
  destination: string
  salesTax: number
  shipping: number
}

const mockSalesTax = 0.08
const mockShipping = 10

const mockStoreApi = {
  getSalesTax: async (_order: Order) =>
    mockSalesTax,
  getShipping: async (_order: Order) =>
    mockShipping,
}

const prepOrder = async (order: Order) =>
  pResolveValues({
    ...order,
    salesTax: mockStoreApi.getSalesTax(order),
    shipping: mockStoreApi.getShipping(order),
  })

const userLocation = 'cleveland'
const shoppingCart = ['broom', 'mop', 'detergent']
const order = {
  cart: shoppingCart,
  destination: userLocation,
} as Order
const updatedOrder = await prepOrder(order)

console.log(updatedOrder)
// prints
// {
//   cart: [broom, mop, detergent]
//   destination: cleveland
//   shipping: 10
//   salesTax: 0.08
// }