utils#BigNumber TypeScript Examples
The following examples show how to use
utils#BigNumber.
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Example #1
Source File: useVoterLockTimestamp.ts From dxvote with GNU Affero General Public License v3.0 | 6 votes |
useVoterLockTimestamp = (
contractAddress: string,
userAddress: string
) => {
const { data, ...rest } = useEtherSWR<BigNumber>(
contractAddress && userAddress
? [contractAddress, 'getVoterLockTimestamp', userAddress]
: [],
{
ABIs: new Map([[contractAddress, ERC20GuildContract.abi]]),
}
);
// TODO: Move this into a SWR middleware
const parsed = useMemo(() => {
if (!data) return undefined;
return unix(data.toNumber());
}, [data]);
return { data: parsed, ...rest };
}
Example #2
Source File: useABIService.ts From dxvote with GNU Affero General Public License v3.0 | 4 votes |
useABIService = (): UseABIServiceReturns => {
const [ABI, setABI] = useState<DecodedABI>();
const {
context: { abiService, providerStore, configStore },
} = useContext();
const decodeABI = (params: DecodeABI) => {
let contract: ContractType | undefined;
const { data, contractType, contractABI } = params;
if (contractType) {
contract = contractType;
}
try {
const abi = abiService.decodeCall(data, contract, contractABI);
setABI(abi);
return abi;
} catch (error) {
console.error(error);
return {};
}
};
const decodedCallData = (
from: string,
to: string,
data: string,
value: BigNumber,
contractABI: string
) => {
const { library } = providerStore.getActiveWeb3React();
const recommendedCalls = configStore.getRecommendedCalls();
let functionSignature = data.substring(0, 10);
const controllerCallDecoded = abiService.decodeCall(
data,
ContractType.Controller
);
const decodedAbi = decodeABI({ data, contractABI });
if (
controllerCallDecoded &&
controllerCallDecoded.function.name === 'genericCall'
) {
to = controllerCallDecoded.args[0];
data = '0x' + controllerCallDecoded.args[1].substring(10);
value = bnum(controllerCallDecoded.args[3]);
functionSignature = controllerCallDecoded.args[1].substring(0, 10);
} else {
data = '0x' + data.substring(10);
}
let asset = ZERO_ADDRESS;
if (
functionSignature === ERC20_TRANSFER_SIGNATURE ||
functionSignature === ERC20_APPROVE_SIGNATURE
) {
asset = to;
}
const recommendedCallUsed = recommendedCalls.find(recommendedCall => {
return (
asset === recommendedCall.asset &&
(ANY_ADDRESS === recommendedCall.from ||
from === recommendedCall.from) &&
to === recommendedCall.to &&
functionSignature ===
library.eth.abi.encodeFunctionSignature(recommendedCall.functionName)
);
});
if (recommendedCallUsed) {
const callParameters = library.eth.abi.decodeParameters(
recommendedCallUsed.params.map(param => param.type),
data
);
if (callParameters.__length__) delete callParameters.__length__;
let encodeFunctionName = library.eth.abi.encodeFunctionSignature(
recommendedCallUsed.functionName
);
return {
from: from,
to: to,
recommendedCallUsed: recommendedCallUsed,
encodedFunctionName: encodeFunctionName,
callParameters: callParameters,
data: data,
value: value,
contractABI: decodedAbi,
};
}
return {
from: from,
to: to,
data: data,
value: value,
functionSignature: functionSignature,
contractABI: decodedAbi,
};
};
return {
ABI,
decodedCallData,
};
}