Function fetchTokenDecimals

packages/cardpay-subgraph/src/utils.ts:255–268

(tokenAddress: Address)

}

export function fetchTokenDecimals(tokenAddress: Address): BigInt {
  let staticToken = StaticToken.fromAddress(tokenAddress);
  if (staticToken != null) {
    return (staticToken as StaticToken).decimals;
  }
  let contract = ERC20.bind(tokenAddress);
  // try types uint8 for decimals
  let decimalValue = null;
  let decimalResult = contract.try_decimals();
  if (!decimalResult.reverted) {
    decimalValue = decimalResult.value;
  }
  return BigInt.fromI32(decimalValue as i32);
}

function isNullEthValue(value: string): boolean {
  return value == ZERO_ADDRESS;