in lib/src/util.dart [130:138]
int firstNonWhitespaceChar(List<int> bytes) {
for (var i = 0; i < bytes.length; i++) {
var char = bytes[i];
if (char != 0x20 && char != 0x09 && char != 0x0a && char != 0x0d) {
return char;
}
}
return -1;
}