An instance of the default implementation of the Utf8Codec .

This instance provides a convenient access to the most common UTF-8 use cases.

Examples:

var encoded = utf8.encode("Îñţérñåţîöñåļîžåţîờñ");
var decoded = utf8.decode([0x62, 0x6c, 0xc3, 0xa5, 0x62, 0xc3, 0xa6,
                           0x72, 0x67, 0x72, 0xc3, 0xb8, 0x64]);