const chan_create_res = a.chan_man.create_channel(b.node_id, BigInt(1000000), BigInt(400), BigInt(0), ldk.UserConfig.constructor_default());
if (!chan_create_res.is_ok()) return false;
const chan_create_res = a.chan_man.create_channel(b.node_id, BigInt(1000000), BigInt(400), BigInt(0), ldk.UserConfig.constructor_default());
if (!chan_create_res.is_ok()) return false;