codeBelt · February 6, 2022 18:56
diff --git a/FirstLastMiddleElementsOfArray_3.0.ts b/FirstLastMiddleElementsOfArray_3.0.ts
 const arrayData = ['a', 'b', 'c', 'd', 'e'];
diff --git a/FirstLastMiddleElementsOfArray_3.1.ts b/FirstLastMiddleElementsOfArray_3.1.ts
 /*
 * destructuring array to object
 */
 const { ...all } = arrayData;

 all // {0: "a", 1: "b", 2: "c", 3: "d", 4: "e"}
diff --git a/FirstLastMiddleElementsOfArray_3.2.ts b/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"}
diff --git a/FirstLastMiddleElementsOfArray_3.3.ts b/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"}
	/*
	* destructuring array to object
	*/
	const { ...all } = arrayData;

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