Test for array of string type in TypeScript

Question

How can I test if a variable is an array of string in TypeScript? Something like this:

function f(): string {
    var a: string[] = [\"A\", \"B\", \"C\"];

         


        

Answer 1

Another option is Array.isArray()

if(! Array.isArray(classNames) ){
    classNames = [classNames]
}