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A basic extractor that manipulates the `window.injectedWeb3` to retrieve all the providers added to the page. It has a number of utilities -
- `web3Enable(dappName: string): Promise<Array<InjectedExtension>>` - to be called before anything else, retrieves the list of all injected extensions/providers
- `web3Accounts(): Promise<Array<InjectedAccountWithMeta>>` - returns a list of all the injected accounts, accross all extensions (source in meta)
- `web3AccountsSubscribe(cb: (accounts: Array<InjectedAccountWithMeta>) => any): Promise<Unsubcall>` - subscribes to the accounts accross all extensions, returning a full list as changes are made
- `web3Enable(dappName: string): Promise<InjectedExtension[]>` - to be called before anything else, retrieves the list of all injected extensions/providers
- `web3Accounts(): Promise<InjectedAccountWithMeta[]>` - returns a list of all the injected accounts, accross all extensions (source in meta)
- `web3AccountsSubscribe(cb: (accounts: InjectedAccountWithMeta[]) => any): Promise<Unsubcall>` - subscribes to the accounts accross all extensions, returning a full list as changes are made
- `web3FromAddress(address: string): Promise<InjectedExtension>` - Retrieves a provider for a specific address
- `web3FromSource(name: string): Promise<InjectedExtension>` - Retrieves a provider identified by the name
- `isWeb3Injected: boolean` - boolean to indicate if `injectedWeb3` was found on the page
- `web3EnablePromise: Promise<Array<InjectedExtension>> | null` - `null` or the promise as a result of the last call to `web3Enable`
- `web3EnablePromise: Promise<InjectedExtension[]> | null` - `null` or the promise as a result of the last call to `web3Enable`
## Usage