@lidofinance/lido-ethereum-sdk
Version:
<div style="display: flex;" align="center"> <h1 align="center">Lido Ethereum SDK</h1> </div>
108 lines • 6.63 kB
JavaScript
;
var __runInitializers = (this && this.__runInitializers) || function (thisArg, initializers, value) {
var useValue = arguments.length > 2;
for (var i = 0; i < initializers.length; i++) {
value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
}
return useValue ? value : void 0;
};
var __esDecorate = (this && this.__esDecorate) || function (ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
var _, done = false;
for (var i = decorators.length - 1; i >= 0; i--) {
var context = {};
for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
for (var p in contextIn.access) context.access[p] = contextIn.access[p];
context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
if (kind === "accessor") {
if (result === void 0) continue;
if (result === null || typeof result !== "object") throw new TypeError("Object expected");
if (_ = accept(result.get)) descriptor.get = _;
if (_ = accept(result.set)) descriptor.set = _;
if (_ = accept(result.init)) initializers.unshift(_);
}
else if (_ = accept(result)) {
if (kind === "field") initializers.unshift(_);
else descriptor[key] = _;
}
}
if (target) Object.defineProperty(target, contextIn.name, descriptor);
done = true;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.LidoSDKApr = void 0;
const index_js_1 = require("../events/index.js");
const index_js_2 = require("../common/decorators/index.js");
const sdk_error_js_1 = require("../common/utils/sdk-error.js");
const sdk_module_js_1 = require("../common/class-primitives/sdk-module.js");
let LidoSDKApr = (() => {
var _a;
let _classSuper = sdk_module_js_1.LidoSDKModule;
let _instanceExtraInitializers = [];
let _getLastApr_decorators;
let _getSmaApr_decorators;
return _a = class LidoSDKApr extends _classSuper {
constructor(props) {
super(props);
Object.defineProperty(this, "events", {
enumerable: true,
configurable: true,
writable: true,
value: __runInitializers(this, _instanceExtraInitializers)
});
this.events = new index_js_1.LidoSDKEvents({ ...props, core: this.core });
}
static calculateAprFromRebaseEvent({ preTotalEther, preTotalShares, postTotalEther, postTotalShares, timeElapsed, }) {
const preShareRate = (preTotalEther * BigInt(10 ** 27)) / preTotalShares;
const postShareRate = (postTotalEther * BigInt(10 ** 27)) / postTotalShares;
const mulForPrecision = 1000000;
const secondsInYear = 31536000n;
const userAPR = (secondsInYear *
((postShareRate - preShareRate) * BigInt(mulForPrecision))) /
preShareRate /
timeElapsed;
return (Number(userAPR) * 100) / mulForPrecision;
}
async getLastApr() {
const event = await this.events.stethEvents.getLastRebaseEvent();
(0, sdk_error_js_1.invariant)(event, 'Could not find last Rebase event', sdk_error_js_1.ERROR_CODE.READ_ERROR);
const apr = _a.calculateAprFromRebaseEvent(event.args);
return apr;
}
async getSmaApr(props) {
const { days } = props;
const lastEvent = await this.events.stethEvents.getLastRebaseEvent();
(0, sdk_error_js_1.invariant)(lastEvent, 'Could not find last Rebase event', sdk_error_js_1.ERROR_CODE.READ_ERROR);
const firstEvent = await this.events.stethEvents.getFirstRebaseEvent({
days,
fromBlockNumber: lastEvent.blockNumber,
});
(0, sdk_error_js_1.invariant)(firstEvent, 'Could not locate first Rebase event. Likely days range greatly preceded first firing of the event.', sdk_error_js_1.ERROR_CODE.READ_ERROR);
const timeElapsed = firstEvent.args.timeElapsed +
(lastEvent.args.reportTimestamp - firstEvent.args.reportTimestamp);
const smaApr = _a.calculateAprFromRebaseEvent({
preTotalEther: firstEvent.args.preTotalEther,
preTotalShares: firstEvent.args.preTotalShares,
postTotalEther: lastEvent.args.postTotalEther,
postTotalShares: lastEvent.args.postTotalShares,
timeElapsed,
});
return smaApr;
}
},
(() => {
const _metadata = typeof Symbol === "function" && Symbol.metadata ? Object.create(_classSuper[Symbol.metadata] ?? null) : void 0;
_getLastApr_decorators = [(0, index_js_2.Logger)('Statistic:'), (0, index_js_2.ErrorHandler)()];
_getSmaApr_decorators = [(0, index_js_2.Logger)('Statistic:'), (0, index_js_2.ErrorHandler)()];
__esDecorate(_a, null, _getLastApr_decorators, { kind: "method", name: "getLastApr", static: false, private: false, access: { has: obj => "getLastApr" in obj, get: obj => obj.getLastApr }, metadata: _metadata }, null, _instanceExtraInitializers);
__esDecorate(_a, null, _getSmaApr_decorators, { kind: "method", name: "getSmaApr", static: false, private: false, access: { has: obj => "getSmaApr" in obj, get: obj => obj.getSmaApr }, metadata: _metadata }, null, _instanceExtraInitializers);
if (_metadata) Object.defineProperty(_a, Symbol.metadata, { enumerable: true, configurable: true, writable: true, value: _metadata });
})(),
_a;
})();
exports.LidoSDKApr = LidoSDKApr;
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