CFP - Docs - mAssignOverrides

mAssignOverrides

(overrides: object) => (base: object) => base

(overrides: map) => (base: map) => base

Assign overrides over a .

Consider assignOverrides instead.
This is for the uncommon case where mutating base is required.

Try It

const ab = { a: 1, b: 2 }
const assignOverridesAB = mAssignOverrides(ab)
const obj = { a: 2, c: 3 }
const mutatedObj = assignOverridesAB(obj)

console.log(mutatedObj === obj) // is true
console.log(obj) // is { a: 1, c: 3, b: 2 }
type ABC = {
  a: number
  b: number
  c: number
}

const ab = { a: 1, b: 2 }
const assignOverridesAB = mAssignOverrides(ab)
const obj = { a: 2, c: 3 } as ABC
const mutatedObj = assignOverridesAB(obj)

console.log(mutatedObj === obj) // is true
console.log(obj) // is { a: 1, c: 3, b: 2 }

Try It

const ab = { a: 1, b: 2 }
const assignOverridesAB = mAssignOverrides(ab)
const obj = { a: 2, c: 3 }
const mutatedObj = assignOverridesAB(obj)

console.log(mutatedObj === obj) // is true
console.log(obj) // is { a: 1, c: 3, b: 2 }
type ABC = {
  a: number
  b: number
  c: number
}

const ab = { a: 1, b: 2 }
const assignOverridesAB = mAssignOverrides(ab)
const obj = { a: 2, c: 3 } as ABC
const mutatedObj = assignOverridesAB(obj)

console.log(mutatedObj === obj) // is true
console.log(obj) // is { a: 1, c: 3, b: 2 }

Sometimes we want to assign required properties over a collection. Below, we have an outfit for our game character Jenkins. To join the pirate guild, we have to wear their pirate hat and eye patch. Let's join'em.

Try It

const enforcedPirateWear = {
  hat: 'pirate hat',
  eyewear: 'eye patch',
}

const assignEnforcedClothing = mAssignOverrides(enforcedPirateWear)

const JenkinsOutfit = {
  hat: 'propeller cap',
  eyewear: 'welding goggles',
  pants: 'loin cloth',
}

assignEnforcedClothing(JenkinsOutfit)
console.log(JenkinsOutfit)
// is {
//   hat: pirate hat
//   eyewear: eye patch
//   pants: loin cloth
// }
const enforcedPirateWear = {
  hat: 'pirate hat',
  eyewear: 'eye patch',
}

const assignEnforcedClothing = mAssignOverrides(enforcedPirateWear)

const JenkinsOutfit = {
  hat: 'propeller cap',
  eyewear: 'welding goggles',
  pants: 'loin cloth',
}

assignEnforcedClothing(JenkinsOutfit)
console.log(JenkinsOutfit)
// is {
//   hat: pirate hat
//   eyewear: eye patch
//   pants: loin cloth
// }

Try It

const enforcedPirateWear = {
  hat: 'pirate hat',
  eyewear: 'eye patch',
}

const assignEnforcedClothing = mAssignOverrides(
  enforcedPirateWear
)

const JenkinsOutfit = {
  hat: 'propeller cap',
  eyewear: 'welding goggles',
  pants: 'loin cloth',
}

assignEnforcedClothing(JenkinsOutfit)
console.log(JenkinsOutfit)
// is {
//   hat: pirate hat
//   eyewear: eye patch
//   pants: loin cloth
// }
const enforcedPirateWear = {
  hat: 'pirate hat',
  eyewear: 'eye patch',
}

const assignEnforcedClothing = mAssignOverrides(
  enforcedPirateWear
)

const JenkinsOutfit = {
  hat: 'propeller cap',
  eyewear: 'welding goggles',
  pants: 'loin cloth',
}

assignEnforcedClothing(JenkinsOutfit)
console.log(JenkinsOutfit)
// is {
//   hat: pirate hat
//   eyewear: eye patch
//   pants: loin cloth
// }