feat: published npm package 1.0.1

it export abi and bytecode, but also helper functions `getTokenAt` and `deployToken`. All nicely typed with typechain 💪

Author: jtakalai

README.md

@@ -3,6 +3,39 @@
 [![Audit by LimeChain](https://img.shields.io/badge/Audit-LimeChain-green)](https://streamr-public.s3.amazonaws.com/DATAv2_audit_LimeChain.pdf)
 [![Audit by Isentropy](https://img.shields.io/badge/Audit-Isentropy-green)](https://streamr-public.s3.amazonaws.com/DATAv2_audit_Isentropy.pdf)
 
+## NPM package contents
+
+JS/TypeScript utilities to get a nicely typed DATAv2 instance. Here's a sample code for plain node.js:
+```javascript
+const { JsonRpcProvider } = require("@ethersproject/providers")
+const { formatEther, parseEther } = require("@ethersproject/units")
+const { Wallet } = require("@ethersproject/wallet")
+const { deployToken } = require("@streamr/data-v2")
+
+const key = process.env.PRIVATE_KEY
+const provider = new JsonRpcProvider(process.env.ETHEREUM_URL)
+const wallet = new Wallet(key, provider)
+
+async function main() {
+    const token = await deployToken(wallet)
+    console.log("Before: %s", formatEther(await token.balanceOf(wallet.address)))
+    await (await token.grantRole(await token.MINTER_ROLE(), wallet.address)).wait()
+    await (await token.mint(wallet.address, parseEther("10"))).wait()
+    console.log("After: %s", formatEther(await token.balanceOf(wallet.address)))
+}
+main().catch(console.error)
+```
+And here's another sample code for TypeScript, run with ts-node:
+```typescript
+import { JsonRpcProvider } from "@ethersproject/providers"
+import { getTokenAt } from "@streamr/data-v2"
+import type { DATAv2 } from "@streamr/data-v2"
+
+const provider: JsonRpcProvider = new JsonRpcProvider(process.env.ETHEREUM_URL)
+const token: DATAv2 = await getTokenAt(process.env.TOKEN_ADDRESS, provider)
+console.log("Symbol:", await token.symbol())
+```
+
 ## List of files
 
 | File                           | Description | Deployed |

hardhat.config.js

@@ -1,6 +1,7 @@
 require("@nomiclabs/hardhat-waffle")
 require("solidity-coverage")
 require("hardhat-gas-reporter")
+require("hardhat-typechain")
 
 // You need to export an object to set up your config
 // Go to https://hardhat.org/config/ to learn more
@@ -24,5 +25,9 @@ module.exports = {
                 version: "0.4.11"
             }
         ]
+    },
+    typechain: {
+        outDir: "typechain",
+        target: "ethers-v5"
     }
 }

index.d.ts

@@ -0,0 +1,23 @@
+import { Signer } from "@ethersproject/abstract-signer";
+import { Provider } from "@ethersproject/providers";
+import type { DATAv2 } from "./typechain/DATAv2";
+export declare const abi: ({
+    type: string;
+    inputs: {
+        indexed?: boolean; // events
+        internalType: string;
+        name: string;
+        type: string;
+    }[];
+    name?: string; // constructor doesn't have name
+    stateMutability?: string;
+    anonymous?: boolean; // events
+    outputs?: {
+        internalType: string;
+        name: string;
+        type: string;
+    }[];
+})[], bytecode: string;
+export type { DATAv2 };
+export declare function getTokenAt(address: string, signerOrProvider: Provider | Signer): DATAv2;
+export declare function deployToken(signer: Signer): Promise<DATAv2>;

index.js

@@ -0,0 +1,62 @@
+"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 };
+    }
+};
+exports.__esModule = true;
+exports.deployToken = exports.getTokenAt = exports.bytecode = exports.abi = void 0;
+var contracts_1 = require("@ethersproject/contracts");
+var dataV2json = require("./artifacts/contracts/DATAv2.sol/DATAv2.json");
+exports.abi = dataV2json.abi, exports.bytecode = dataV2json.bytecode;
+function getTokenAt(address, signerOrProvider) {
+    return new contracts_1.Contract(address, exports.abi, signerOrProvider);
+}
+exports.getTokenAt = getTokenAt;
+function deployToken(signer) {
+    return __awaiter(this, void 0, void 0, function () {
+        var factory, contract;
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0:
+                    factory = new contracts_1.ContractFactory(exports.abi, exports.bytecode, signer);
+                    return [4 /*yield*/, factory.deploy()];
+                case 1:
+                    contract = _a.sent();
+                    return [2 /*return*/, contract.deployed()];
+            }
+        });
+    });
+}
+exports.deployToken = deployToken;

index.ts

@@ -0,0 +1,19 @@
+import { Signer } from "@ethersproject/abstract-signer"
+import { Provider } from "@ethersproject/providers"
+import { Contract, ContractFactory } from "@ethersproject/contracts"
+
+import * as dataV2json from "./artifacts/contracts/DATAv2.sol/DATAv2.json"
+import type { DATAv2 } from "./typechain/DATAv2"
+
+export const { abi, bytecode } = dataV2json
+export type { DATAv2 }
+
+export function getTokenAt(address: string, signerOrProvider: Provider | Signer): DATAv2 {
+    return new Contract(address, abi, signerOrProvider) as unknown as DATAv2
+}
+
+export async function deployToken(signer: Signer): Promise<DATAv2> {
+    const factory = new ContractFactory(abi, bytecode, signer)
+    const contract = await factory.deploy() as unknown as DATAv2
+    return contract.deployed()
+}