@polkadot/types/interfaces#PrefabWasmModule TypeScript Examples

The following examples show how to use @polkadot/types/interfaces#PrefabWasmModule. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: ValidateCode.tsx    From crust-apps with Apache License 2.0 6 votes vote down vote up 
function ValidateCode ({ codeHash, onChange }: Props): React.ReactElement<Props> | null {
  const { api } = useApi();
  const { t } = useTranslation();
  const codeStorage = useCall<Option<PrefabWasmModule>>((api.query.contracts || api.query.contract).codeStorage, [codeHash]);
  const [isValidHex, isValid] = useMemo(
    (): [boolean, boolean] => {
      const isValidHex = !!codeHash && isHex(codeHash) && codeHash.length === 66;
      const isStored = !!codeStorage && codeStorage.isSome;
      const isValid = isValidHex && isStored;

      onChange(isValid);

      return [
        isValidHex,
        isValid
      ];
    },
    [codeHash, codeStorage, onChange]
  );

  if (isValid || !isValidHex) {
    return null;
  }

  return (
    <InfoForInput type='error'>
      {
        isValidHex
          ? t('Unable to find on-chain WASM code for the supplied codeHash')
          : t('The codeHash is not a valid hex hash')
      }
    </InfoForInput>
  );
}