Typechain
- 1 min什么是typechain
Ethereum智能合约的TypeScript绑定 TypeChain是一个代码生成器-提供ABI文件和区块链访问库的名称（ethers/truffle/web3.js），您将获得与给定库兼容的TypeScript类型。
静态类型-您将不再调用不存在的方法
IDE支持-适用于任何支持Typescript的IDE
可扩展-使用多种不同的工具：ether.js、hardhat、truffle、Web3.js或您可以创建自己的目标
无摩擦-适用于简单的JSON ABI文件以及Truffle/Hardhat工件
需要添加tsconfig.json
{
"compilerOptions": {
"target": "es5",
"module": "commonjs",
"strict": true,
"esModuleInterop": true,
"outDir": "dist",
"resolveJsonModule": true
},
"include": ["./scripts", "./test", "./typechain-types"],
"files": ["./hardhat.config.ts"]
}
需要在hardhat.config.ts里面添加
typechain: {
target: 'truffle-v5',
}
添加依赖
"devDependencies": {
"@nomiclabs/hardhat-etherscan": "^2.1.1",
"@nomiclabs/hardhat-truffle5": "^2.0.0",
"@nomiclabs/hardhat-web3": "^2.0.0",
"@typechain/hardhat": "workspace:^6.1.4",
"@typechain/truffle-v5": "workspace:^8.0.2",
"@types/chai": "^4.2.15",
"@types/chai-as-promised": "^7.1.3",
"@types/mocha": "^8.2.0",
"@types/node": "^14",
"chai": "^4.3.0",
"chai-as-promised": "^7.1.1",
"chai-bn": "^0.2.1",
"dotenv": "^8.2.0",
"hardhat": "^2.9.9",
"ts-generator": "0.0.8",
"ts-node": "^10.7.0",
"typechain": "workspace:^8.1.1",
"typescript": "^4.6",
"web3": "^1.3.4",
"web3-core": "^1",
"web3-eth-contract": "^1",
"web3-core-helpers": "^1.2.1",
"web3-core-promievent": "^1.2.1",
"web3-eth-abi": "^1.2.1",
"web3-utils": "^1.2.1",
"bn.js": "^4.11.0",
"@types/bn.js": "^4.11.6"
}
然后运行
pnpm install # it will automatically run TypeChain types generation
# pnpm generate-types to manually regenerate them
pnpm test
会自动生成typechain-types文件夹
然后在test文件中
import {xxxcontract, xxxInstance} from '../typechain-types'