Using your programming language of choice from the drop-down, write a function that takes a string and returns the count of instances of the letter "a" in the string.
The comparison should be case-insensitive, i.e. both "a" and "A" should count.
For example, "abcABC" should return 2.
function count(string) {
}// TODO: Add your tests here
// Starting from Node 10.x, [Mocha](https://mochajs.org) is used instead of our custom test framework.
// [Codewars' assertion methods](https://github.com/Codewars/codewars.com/wiki/Codewars-JavaScript-Test-Framework)
// are still available for now.
//
// For new tests, using [Chai](https://chaijs.com/) is recommended.
// You can use it by requiring:
// const assert = require("chai").assert;
// If the failure output for deep equality is truncated, `chai.config.truncateThreshold` can be adjusted.
describe("Solution", function() {
it("should test for something", function() {
assert.strictEqual(count('abcABC'), 2);
});
});