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khle/step6.ts

Last active January 14, 2022 06:59
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Step 6
Raw
step6.ts
interface User {
firstName: string
lastName: string
}
function findMatchingAndMoveToFirst(
users: readonly User[],
shouldBeFirst: User
) {
return users.reduce(
(accumulator: User[], current: User) =>
current.firstName === shouldBeFirst.firstName &&
current.lastName === shouldBeFirst.lastName
? [current, ...accumulator]
: [...accumulator, current],
[]
)
}
const users = [
{ firstName: "Jane", lastName: "Foo" },
{ firstName: "John", lastName: "Bar" },
{ firstName: "Jill", lastName: "Err" },
]
const reArrangedUsers = findMatchingAndMoveToFirst(users, {
firstName: "John",
lastName: "Bar",
})
console.log(reArrangedUsers)
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