FirstLastMiddleElementsOfArray_3.0.ts

const arrayData = ['a', 'b', 'c', 'd', 'e'];

FirstLastMiddleElementsOfArray_3.1.ts

/*
 * destructuring array to object
 */
const { ...all } = arrayData;

all // {0: "a", 1: "b", 2: "c", 3: "d", 4: "e"}

FirstLastMiddleElementsOfArray_3.2.ts

/*
 * destructuring array to object and renaming the index to a property name
 */
const { 0: first, 4: last, ...rest } = arrayData;

first // "a"
last // "e"
rest // {1: "b", 2: "c", 3: "d"}

FirstLastMiddleElementsOfArray_3.3.ts

/*
 * destructuring array to object and renaming the index to a property name 
 * with last item being dynamic
 */
const { 0: first, [arrayData.length - 1]: last, ...rest } = arrayData;

first // "a"
last // "e"
rest // {1: "b", 2: "c", 3: "d"}