convertToBigInt method
Implementation
BigInt convertToBigInt(num value) {
if (value is int) {
return BigInt.from(value) * BigInt.from(10).pow(18);
} else if (value is double) {
BigInt pres = BigInt.from(10).pow(18);
return BigInt.from((value * pres.toInt()));
} else {
throw ArgumentError('Value must be an int or a double');
}
}