pushVarInt method
Implementation
pushVarInt(int x) {
if (x < 0xfd) {
pushNum(x);
} else if (x < 0xffff) {
pushNum(0xfd);
pushNum(x, len: 2, bigEndian: false);
} else if (x < 0xffffffff) {
pushNum(0xfe);
pushNum(x, len: 4, bigEndian: false);
} else {
pushNum(0xff);
pushNum(x, len: 8, bigEndian: false);
}
}