Function toChecksumAddress

packages/cardpay-subgraph/src/utils.ts:158–175

(address: Address)

}

export function toChecksumAddress(address: Address): string {
  let lowerCaseAddress = address.toHex().slice(2);
  let hash = crypto
    .keccak256(ByteArray.fromUTF8(address.toHex().slice(2)))
    .toHex()
    .slice(2);
  let result = '';

  for (let i = 0; i < lowerCaseAddress.length; i++) {
    if (parseInt(hash.charAt(i), 16) >= 8) {
      result += toUpper(lowerCaseAddress.charAt(i));
    } else {
      result += lowerCaseAddress.charAt(i);
    }
  }

  return toHex(result);
}

export function toHex(bytes: string): string {
  return '0x' + bytes;