JSFiddle - React, Tailwind, and code Playground
JavaScript
let nonUniqueArray = ["ACCRUALRATESTEMPLATE_MEA_INVALIDOFFERINGNAME", "ACCRUALRATESTEMPLATE_MEA_INVALIDOFFERINGNAME", "ACCRUALRATESTEMPLATE_MEA_INVALIDOFFERINGNAME"];
alert(`${nonUniqueArray} is unique : ${checkIfArrayIsUnique(nonUniqueArray)}`);
function checkIfArrayIsUnique(myArray) {
return myArray.length === new Set(myArray).size;
}