let arr = ["php", "NODE.JS", "typescript", "c++", "c", "PHP", "C++", "nodejs", "C", "JAVASCRIPT"];
arr.sort((a, b) => {
return a.localeCompare(b, undefined, {sensitivity: 'base'});
});
console.log(arr);
/*
run:
['c', 'C', 'c++', 'C++', 'JAVASCRIPT', 'NODE.JS', 'nodejs', 'php', 'PHP', 'typescript']
*/