Added support for Moonriver

.gitignore

@@ -2,4 +2,3 @@
 node_modules
 .npmrc
 *.log
-dist/

dist/abi.d.ts

@@ -0,0 +1,5 @@
+import { ethers } from 'ethers';
+export declare class Abi {
+    static encode(name: string, inputs: ethers.utils.ParamType[], params: any[]): string;
+    static decode(outputs: ethers.utils.ParamType[], data: ethers.utils.BytesLike): ethers.utils.Result;
+}

dist/abi.js

@@ -0,0 +1,46 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Abi = void 0;
+var ethers_1 = require("ethers");
+var Abi = /** @class */ (function () {
+    function Abi() {
+    }
+    Abi.encode = function (name, inputs, params) {
+        var functionSignature = getFunctionSignature(name, inputs);
+        var functionHash = ethers_1.ethers.utils.keccak256(ethers_1.ethers.utils.toUtf8Bytes(functionSignature));
+        var functionData = functionHash.substring(2, 10);
+        var abiCoder = new ethers_1.ethers.utils.AbiCoder();
+        var argumentString = abiCoder.encode(inputs, params);
+        var argumentData = argumentString.substring(2);
+        var inputData = "0x" + functionData + argumentData;
+        return inputData;
+    };
+    Abi.decode = function (outputs, data) {
+        var abiCoder = new ethers_1.ethers.utils.AbiCoder();
+        var params = abiCoder.decode(outputs, data);
+        return params;
+    };
+    return Abi;
+}());
+exports.Abi = Abi;
+function getFunctionSignature(name, inputs) {
+    var types = [];
+    for (var _i = 0, inputs_1 = inputs; _i < inputs_1.length; _i++) {
+        var input = inputs_1[_i];
+        if (input.type === 'tuple') {
+            var tupleString = getFunctionSignature('', input.components);
+            types.push(tupleString);
+            continue;
+        }
+        if (input.type === 'tuple[]') {
+            var tupleString = getFunctionSignature('', input.components);
+            var arrayString = tupleString + "[]";
+            types.push(arrayString);
+            continue;
+        }
+        types.push(input.type);
+    }
+    var typeString = types.join(',');
+    var functionSignature = name + "(" + typeString + ")";
+    return functionSignature;
+}

dist/abi/multicall.d.ts

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+export declare const multicallAbi: ({
+    constant: boolean;
+    inputs: {
+        components: {
+            internalType: string;
+            name: string;
+            type: string;
+        }[];
+        internalType: string;
+        name: string;
+        type: string;
+    }[];
+    name: string;
+    outputs: {
+        internalType: string;
+        name: string;
+        type: string;
+    }[];
+    payable: boolean;
+    stateMutability: string;
+    type: string;
+} | {
+    constant: boolean;
+    inputs: {
+        internalType: string;
+        name: string;
+        type: string;
+    }[];
+    name: string;
+    outputs: {
+        internalType: string;
+        name: string;
+        type: string;
+    }[];
+    payable: boolean;
+    stateMutability: string;
+    type: string;
+})[];

dist/abi/multicall.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.multicallAbi = void 0;
+exports.multicallAbi = [
+    {
+        constant: true,
+        inputs: [
+            {
+                components: [
+                    {
+                        internalType: 'address',
+                        name: 'target',
+                        type: 'address',
+                    },
+                    {
+                        internalType: 'bytes',
+                        name: 'callData',
+                        type: 'bytes',
+                    },
+                ],
+                internalType: 'struct Multicall.Call[]',
+                name: 'calls',
+                type: 'tuple[]',
+            },
+        ],
+        name: 'aggregate',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'blockNumber',
+                type: 'uint256',
+            },
+            {
+                internalType: 'bytes[]',
+                name: 'returnData',
+                type: 'bytes[]',
+            },
+        ],
+        payable: false,
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        constant: true,
+        inputs: [
+            {
+                internalType: 'uint256',
+                name: 'blockNumber',
+                type: 'uint256',
+            },
+        ],
+        name: 'getBlockHash',
+        outputs: [
+            {
+                internalType: 'bytes32',
+                name: 'blockHash',
+                type: 'bytes32',
+            },
+        ],
+        payable: false,
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        constant: true,
+        inputs: [],
+        name: 'getCurrentBlockCoinbase',
+        outputs: [
+            {
+                internalType: 'address',
+                name: 'coinbase',
+                type: 'address',
+            },
+        ],
+        payable: false,
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        constant: true,
+        inputs: [],
+        name: 'getCurrentBlockDifficulty',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'difficulty',
+                type: 'uint256',
+            },
+        ],
+        payable: false,
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        constant: true,
+        inputs: [],
+        name: 'getCurrentBlockGasLimit',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'gaslimit',
+                type: 'uint256',
+            },
+        ],
+        payable: false,
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        constant: true,
+        inputs: [],
+        name: 'getCurrentBlockTimestamp',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'timestamp',
+                type: 'uint256',
+            },
+        ],
+        payable: false,
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        constant: true,
+        inputs: [
+            {
+                internalType: 'address',
+                name: 'addr',
+                type: 'address',
+            },
+        ],
+        name: 'getEthBalance',
+        outputs: [
+            {
+                internalType: 'uint256',
+                name: 'balance',
+                type: 'uint256',
+            },
+        ],
+        payable: false,
+        stateMutability: 'view',
+        type: 'function',
+    },
+    {
+        constant: true,
+        inputs: [],
+        name: 'getLastBlockHash',
+        outputs: [
+            {
+                internalType: 'bytes32',
+                name: 'blockHash',
+                type: 'bytes32',
+            },
+        ],
+        payable: false,
+        stateMutability: 'view',
+        type: 'function',
+    },
+];

dist/call.d.ts

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+import { ethers } from 'ethers';
+import { ContractCall } from './types';
+export declare function all<T extends any[] = any[]>(calls: ContractCall[], multicallAddress: string, provider: ethers.providers.Provider): Promise<T>;

dist/call.js

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+"use strict";
+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());
+    });
+};
+var __generator = (this && this.__generator) || function (thisArg, body) {
+    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
+    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
+    function verb(n) { return function (v) { return step([n, v]); }; }
+    function step(op) {
+        if (f) throw new TypeError("Generator is already executing.");
+        while (_) try {
+            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
+            if (y = 0, t) op = [op[0] & 2, t.value];
+            switch (op[0]) {
+                case 0: case 1: t = op; break;
+                case 4: _.label++; return { value: op[1], done: false };
+                case 5: _.label++; y = op[1]; op = [0]; continue;
+                case 7: op = _.ops.pop(); _.trys.pop(); continue;
+                default:
+                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
+                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
+                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
+                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
+                    if (t[2]) _.ops.pop();
+                    _.trys.pop(); continue;
+            }
+            op = body.call(thisArg, _);
+        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
+        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+    }
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.all = void 0;
+var ethers_1 = require("ethers");
+var abi_1 = require("./abi");
+var multicall_1 = require("./abi/multicall");
+function all(calls, multicallAddress, provider) {
+    return __awaiter(this, void 0, void 0, function () {
+        var multicall, callRequests, response, callCount, callResult, i, outputs, returnData, params, result;
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0:
+                    multicall = new ethers_1.ethers.Contract(multicallAddress, multicall_1.multicallAbi, provider);
+                    callRequests = calls.map(function (call) {
+                        var callData = abi_1.Abi.encode(call.name, call.inputs, call.params);
+                        return {
+                            target: call.contract.address,
+                            callData: callData,
+                        };
+                    });
+                    return [4 /*yield*/, multicall.aggregate(callRequests)];
+                case 1:
+                    response = _a.sent();
+                    callCount = calls.length;
+                    callResult = [];
+                    for (i = 0; i < callCount; i++) {
+                        outputs = calls[i].outputs;
+                        returnData = response.returnData[i];
+                        params = abi_1.Abi.decode(outputs, returnData);
+                        result = outputs.length === 1 ? params[0] : params;
+                        callResult.push(result);
+                    }
+                    return [2 /*return*/, callResult];
+            }
+        });
+    });
+}
+exports.all = all;

dist/calls.d.ts

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+export declare function getEthBalance(address: string, multicallAddress: string): any;

dist/calls.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getEthBalance = void 0;
+var multicall_1 = require("./abi/multicall");
+var contract_1 = require("./contract");
+function getEthBalance(address, multicallAddress) {
+    var multicall = new contract_1.Contract(multicallAddress, multicall_1.multicallAbi);
+    return multicall.getEthBalance(address);
+}
+exports.getEthBalance = getEthBalance;

dist/contract.d.ts

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+import { Fragment, FunctionFragment, JsonFragment } from '@ethersproject/abi';
+export declare class Contract {
+    private _address;
+    private _abi;
+    private _functions;
+    get address(): string;
+    get abi(): Fragment[];
+    get functions(): FunctionFragment[];
+    constructor(address: string, abi: JsonFragment[] | string[] | Fragment[]);
+    [method: string]: any;
+}