Array Identifier

In JavaScript, distinguishing between different data types is crucial for writing robust and predictable code. One common task is to determine if a given variable holds an array. This is important for operations that specifically require array methods or behavior, preventing errors and ensuring correct logic.

Problem Description

Your task is to create a JavaScript function that takes a single argument and returns true if the argument is an array, and false otherwise.

Requirements:

• The function should accurately identify all JavaScript arrays.
• It should correctly identify non-array values, including primitive types (strings, numbers, booleans, null, undefined, symbols, bigints) and object types (plain objects, functions, dates, etc.).

Expected Behavior:

• Given an array, the function should return true.
• Given any value that is not an array, the function should return false.

Edge Cases to Consider:

• null and undefined
• Primitive data types
• Plain JavaScript objects ({})
• Functions
• Instances of custom classes

Examples

Example 1:

Input: [1, 2, 3]
Output: true
Explanation: The input is a standard JavaScript array.

Example 2:

Input: "hello"
Output: false
Explanation: The input is a string, not an array.

Example 3:

Input: { a: 1, b: 2 }
Output: false
Explanation: The input is a plain JavaScript object, not an array.

Example 4:

Input: null
Output: false
Explanation: null is a primitive type and not an array.

Constraints

• The function will be called with a single argument.
• The argument can be any valid JavaScript data type.

Notes

Consider the various ways to check for an array in JavaScript. There are built-in methods and properties that can help you achieve this. Think about which method is the most reliable and covers all cases.