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📄 useArrayFindLast

📊 Analysis Summary

Metric	Count
🔧 Functions	2
📦 Imports	4
🟢 Vue Composition API	1
📑 Type Aliases	1

📚 Table of Contents

• Imports
• Vue Composition API
• Functions
• Type Aliases

🛠️ File Location:

📂 packages/shared/useArrayFindLast/index.ts

📦 Imports

Name	Source
ComputedRef	vue
MaybeRefOrGetter	vue
computed	vue
toValue	vue

---

Vue Composition API

Name	Type	Reactive Variables	Composables
computed	computed	none	none

---

Functions

useArrayFindLast(list: MaybeRefOrGetter<MaybeRefOrGetter<T>[]>, fn: (element: T, index: number, array: Mayb…): UseArrayFindLastReturn<T>

Reactive Array.findLast

Parameters:

• list any: the array was called upon.
• fn any: a function to test each element.

Returns: undefined the last element in the array that satisfies the provided testing function. Otherwise, undefined is returned.

See: https://vueuse.org/useArrayFindLast

Tags: @__NO_SIDE_EFFECTS__

Raw JSDoc

/**
 * Reactive `Array.findLast`
 *
 * @see https://vueuse.org/useArrayFindLast
 * @param list - the array was called upon.
 * @param fn - a function to test each element.
 *
 * @returns the last element in the array that satisfies the provided testing function. Otherwise, undefined is returned.
 *
 * @__NO_SIDE_EFFECTS__
 */

Calls:

• computed (from vue)
• toValue (from vue)
• findLast
• fn
• toValue(list) .findLast

Code

export function useArrayFindLast<T>(
  list: MaybeRefOrGetter<MaybeRefOrGetter<T>[]>,
  fn: (element: T, index: number, array: MaybeRefOrGetter<T>[]) => boolean,
): UseArrayFindLastReturn<T> {
  return computed(() =>
    toValue<T | undefined>(
      !Array.prototype.findLast
        ? findLast(toValue(list), (element, index, array) => fn(toValue(element), index, array))
        : toValue(list)
            .findLast((element, index, array) => fn(toValue(element), index, array)),
    ))
}

findLast(arr: T[], cb: (element: T, index: number, array: T[])…): T | undefined

Parameters:

• arr T[]
• cb (element: T, index: number, array: T[]) => boolean

Returns: T | undefined

Calls:

• cb

Code

function findLast<T>(arr: T[], cb: (element: T, index: number, array: T[]) => boolean): T | undefined {
  let index = arr.length
  while (index-- > 0) {
    if (cb(arr[index], index, arr))
      return arr[index]
  }
  return undefined
}

---

Type Aliases

UseArrayFindLastReturn<T = any>

type UseArrayFindLastReturn<T = any> = ComputedRef<T | undefined>;

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