@0xcert/ethereum-value-ledger
Version:
Value ledger module for currency management on the Ethereum blockchain.
35 lines • 1.64 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
const functionSignature = '0xdd62ed3e';
const inputTypes = ['address', 'address'];
const outputTypes = ['uint256'];
function default_1(ledger, accountId, spenderId) {
return __awaiter(this, void 0, void 0, function* () {
try {
const attrs = {
to: ledger.id,
data: functionSignature + ledger.provider.encoder.encodeParameters(inputTypes, [accountId, spenderId]).substr(2),
};
const res = yield ledger.provider.post({
method: 'eth_call',
params: [attrs, 'latest'],
});
return ledger.provider.encoder.decodeParameters(outputTypes, res.result)[0].toString();
}
catch (error) {
ledger.provider.log(error);
return null;
}
});
}
exports.default = default_1;
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