Yearn web Lib is a library of standard components used through Yearn's Projects.
This library is made for React projects with the idea to be light, efficient and easy to use.
We are using React + Tailwindcss + ethersjs for the web3 package, and some contexts are available to correctly wrap your app.

Please check @yearn/web-template for documentation and usage.

The stack used for this project is the following:

• 🚀 Next — JavaScript library for user interfaces
• ▲ Vercel — Cloud deployment platform
• 🏎 Lerna — Workspace management
• 🛠 Tsup — TypeScript bundler powered by esbuild
• 📄 TypeScript for static type checking
• 💄 ESLint for code linting
• ⚙️ GitHub Actions for fully automated package publishing

This repo is mirrored on NPM.

yarn add @yearn-finance/web-lib

• yarn dev - Run all packages locally

The following packages and applications are available

• package/docs: Documentation site for the library
• package/playground: A playground for testing components
• packages/web-lib: Actual library for Yearn's projects

Each package and app is 100% TypeScript.

When running yarn build in the package/web-lib folder, the library will be bumped to the next minor version, the code will be compiled and the various files will be copied in the package/web-lib/dist folder.
From there the library can be published to NPM via the yarn publish ./dist command.

Create a default style.css file in your project root, and add that in it:

/* This will load Tailwindcss + all the overwrite from Yearn lib */
@import '@yearn-finance/web-lib/style.next.css';

Then, setup your tailwind.config.js file to enable detection of your style and prod optimization:

const {join} = require('path');
module.exports = {
	presets: [require('@yearn-finance/web-lib/tailwind.config.cjs')],
	content: [
		join(__dirname, 'pages', '**', '*.{js,jsx,ts,tsx}'),
		join(__dirname, 'components', 'icons', '**', '*.{js,jsx,ts,tsx}'),
		join(__dirname, 'components', '**', '*.{js,jsx,ts,tsx}'),
		join(__dirname, 'utils', '**', '*.{js,jsx,ts,tsx}'),
		join(__dirname, 'node_modules', '@yearn-finance', 'web-lib', 'layouts', '**', '*.js'),
		join(__dirname, 'node_modules', '@yearn-finance', 'web-lib', 'components', '**', '*.js'),
		join(__dirname, 'node_modules', '@yearn-finance', 'web-lib', 'contexts', '**', '*.js'),
		join(__dirname, 'node_modules', '@yearn-finance', 'web-lib', 'icons', '**', '*.js'),
		join(__dirname, 'node_modules', '@yearn-finance', 'web-lib', 'utils', '**', '*.js')
	],
	.....
};

Finally, you can import the Eslint config in your .eslintrc.js file:

module.exports = {
	'extends': ['./node_modules/@yearn-finance/web-lib/.eslintrc.cjs'],
	'parser': '@typescript-eslint/parser',
	'parserOptions': {
		'ecmaFeatures': {
			'jsx': true
		},
		'tsconfigRootDir': __dirname,
		'ecmaVersion': 2022,
		'sourceType': 'module',
		'project': ['./tsconfig.json']
	}
};

Ensure your env are set. Here is the list of the stuff to set:

WEB_SOCKET_URL: {
	1: process.env.WS_URL_MAINNET,
	10: process.env.WS_URL_OPTIMISM,
	250: process.env.WS_URL_FANTOM,
	42161: process.env.WS_URL_ARBITRUM
},
JSON_RPC_URL: {
	1: process.env.RPC_URL_MAINNET,
	10: process.env.RPC_URL_OPTIMISM,
	250: process.env.RPC_URL_FANTOM,
	42161: process.env.RPC_URL_ARBITRUM
},
ALCHEMY_KEY: process.env.ALCHEMY_KEY,
INFURA_KEY: process.env.INFURA_KEY

Usage is way simpler. You first need to wrap you app with the WithYearn context, and then you can use the components from the library.

import	{WithYearn}		from	'@yearn-finance/web-lib/contexts';

function	MyApp(props: AppProps): ReactElement {
	const	{Component, pageProps} = props;
	
	return (
		<WithYearn>
			<AppWrapper
				Component={Component}
				pageProps={pageProps} />
		</WithYearn>
	);
}