Web3Modal
A single Web3 / Ethereum provider solution for all Wallets
Introduction
Web3Modal is an easy-to-use library to help developers add support for multiple providers in their apps with a simple customizable configuration.
By default Web3Modal Library supports injected providers like (Metamask, Dapper, Gnosis Safe, Frame, Web3 Browsers, etc) and WalletConnect, You can also easily configure the library to support Portis, Fortmatic, Squarelink, Torus, Authereum, D'CENT Wallet and Arkane.
Preview
You can test the library on: https://web3modal.com/
Projects using web3modal
Open a PR to add your project to the list!
- DAO Stack
- Gnosis Safe
- 3Box Hub
- KnownOrigin
- Clovers Network
- Affogato
- Linkdrop
- Dapparatus
- Totle Swap
- Win Or Lose
- etc
Related Efforts
Usage
- Install Web3Modal NPM package
npm install --save @actool/web3modal
# OR
yarn add @actool/web3modal- Then you can add Web3Modal to your Dapp as follows
import Web3 from "web3";
import Web3Modal from "@actool/web3modal";
const providerOptions = {
binancewallet: {
package: window.BinanceChain,
},
metamask: {
package: window.ethereum,
},
};
const web3Modal = new Web3Modal({
cacheProvider: true,
providerOptions,
});
const provider = await web3Modal.connect();
const web3 = new Web3(provider);Provider Events
You should subscribe to provider events compatible with EIP-1193 standard.
// Subscribe to accounts change
provider.on("accountsChanged", (accounts: string[]) => {
console.log(accounts);
});
// Subscribe to chainId change
provider.on("chainChanged", (chainId: number) => {
console.log(chainId);
});
// Subscribe to provider connection
provider.on("connect", (info: { chainId: number }) => {
console.log(info);
});
// Subscribe to provider disconnection
provider.on("disconnect", (error: { code: number; message: string }) => {
console.log(error);
});Provider Options
These are all the providers available with Web3Modal and how to configure their provider options:
API
class Web3Modal {
cachedProvider: string;
connect(): Promise<any>;
connectTo(id: string): Promise<any>;
toggleModal(): Promise<void>;
on(event: string, callback: SimpleFunction): SimpleFunction;
off(event: string, callback?: SimpleFunction): void;
clearCachedProvider(): void;
setCachedProvider(): void;
updateTheme(theme: string | ThemeColors): Promise<void>;
}Utils
function getInjectedProvider(): IProviderInfo | null;
function getInjectedProviderName(): string | null;
function getProviderInfo(provider: any): IProviderInfo;
function getProviderInfoByName(name: string | null): IProviderInfo;
function getProviderInfoById(id: string | null): IProviderInfo;
function getProviderInfoByCheck(check: string | null): IProviderInfo;Types
interface IProviderInfo {
id: string;
type: string;
check: string;
name: string;
logo: string;
description?: string;
package?: {
required?: string[];
};
}
type ThemeColors = {
background: string;
main: string;
secondary: string;
border: string;
hover: string;
};
type SimpleFunction = (input?: any) => void;Custom Themes
The theme enabled by default is light but dark theme is also available by setting the option theme to dark, as follows:
const web3Modal = new Web3Modal({
...otherOptions,
theme: "dark"
});Completely custom themes are also available by passing an object instead with the following parameters with valid css colors values:
const web3Modal = new Web3Modal({
...otherOptions,
theme: {
background: "rgb(39, 49, 56)",
main: "rgb(199, 199, 199)",
secondary: "rgb(136, 136, 136)",
border: "rgba(195, 195, 195, 0.14)",
hover: "rgb(16, 26, 32)"
}
});Addtionally you can also update the modal theme after instantiated by calling the following method:
await web3Modal.updateTheme("dark");
// OR
await web3Modal.updateTheme({
background: "rgb(39, 49, 56)",
main: "rgb(199, 199, 199)",
secondary: "rgb(136, 136, 136)",
border: "rgba(195, 195, 195, 0.14)",
hover: "rgb(16, 26, 32)"
});Custom Display
It's possible to customize the display of each provider to change the name, description and logo. These options are available as part of the provider options as following
const providerOptions = {
// Example with injected providers
injected: {
display: {
logo: "data:image/gif;base64,INSERT_BASE64_STRING",
name: "Injected",
description: "Connect with the provider in your Browser"
},
package: null
},
// Example with WalletConnect provider
walletconnect: {
display: {
logo: "data:image/gif;base64,INSERT_BASE64_STRING",
name: "Mobile",
description: "Scan qrcode with your mobile wallet"
},
package: WalletConnectProvider,
options: {
infuraId: "INFURA_ID" // required
}
}
};You can change only one of the display options, you are not required to fill all 3 options, example:
const providerOptions = {
walletconnect: {
display: {
name: "Mobile"
},
package: WalletConnectProvider,
options: {
infuraId: "INFURA_ID" // required
}
}
};Custom Provider
If you would like to include a provider that isn't supported yet on Web3Modal, we would recommend you submit a PR following the simple five steps in our "Adding Providers" instructions
If still need to add a custom provider to your Web3Modal integration, you can add it to the provider options with a key prefixed with custom- and you will need to include the display options and connector handler as follows
import ExampleProvider from "example-provider";
const providerOptions = {
"custom-example": {
display: {
logo: "data:image/gif;base64,INSERT_BASE64_STRING",
name: "Example Provider",
description: "Connect to your example provider account"
}
package: ExampleProvider,
options: {
apiKey: "EXAMPLE_PROVIDER_API_KEY"
},
connector: async (ProviderPackage, options) => {
const provider = new ProviderPackage(options);
await provider.enable()
return provider;
}
}
}Connect to specific provider
In case you want to connect a specific provider, you can use the method connectTo and use the specific id. Example:
import Web3 from "web3";
import Web3Modal from "web3modal";
const providerOptions = {
/* See Provider Options Section */
};
const web3Modal = new Web3Modal({
network: "mainnet", // optional
cacheProvider: true, // optional
providerOptions // required
});
const provider = await web3Modal.connectTo("walletconnect");
const web = new Web3(provider);Optional Flags
Disable Injected Provider
By default is set to false and Web3Modal always displays InjectedProvider as an option to the user if available. However you can disable it as an optional flag if you desire:
const web3Modal = new Web3Modal({ disableInjectedProvider: true });Cache Provider
By default is set to false and Web3Modal will always require the user to choose a provider option before triggering the onConnect event. However you can enable caching the last chosen provider. Example:
const web3Modal = new Web3Modal({ cacheProvider: true });If you wish to reset the cached provider you can call the following method:
web3Modal.clearCachedProvider();If you wish to connect to the cachedProvider you can simply do the following:
if (web3Modal.cachedProvider) {
await web3Modal.connect();
}Adding a new provider
Do you want to add your provider to Web3Modal? All logic for supported providers lives inside the src/providers directory. To add a new follow the following steps here
Migrating from Web3Connect
If you were using Web3Connect before you can check the migration instructions for how to use Web3Modal and handle breaking changes here
Contributions
Code contributions are welcome
If you wish to support a new provider submit a issue to the repo or fork this repo and create a pull request.
You can join to our discord to further discuss https://discordapp.com/invite/YGnSX9y
License
MIT