[js] trace error

[R32]

class Main {
    static function main() {
        trace("a".charAt(0) == "a");
    }
}

the result is false. actually the output is same as ( "Main.hx:5: " + "a".charAt(0) ) == "a"

// Generated by Haxe 4.0.0 (git build development @ 52f680c)
(function () { "use strict";
var Main = function() { };
Main.main = function() {
	console.log("Main.hx:5: " + "a".charAt(0) == "a");  
};
Main.main();
})();