Here’s the article:
Metask error: impossible to 10 “Window.etherum” in Angular
When you build an Etherum-based application, one of the most essential library for Etherum’s Blockchain is the Metask. Howver, wen they is angular, developers of encounter an error that prevents their progress: unable to “window.thereum” In this article, we will deepen what is yours and give a step by step by solution to soolve it.
problem
Metask, developed by Coinbase, is a poplar extension of the Etherum browser. Allows to interact with the blockchain it web browser. To integrate Metask with an angular application, developpers are based on
Howver, wen using angular, this approach of the fail to due to the compatibility problems or security issues. The reaon consists of the different frames and librarys the browser environment interact. In particle, the angular addiction injection of the injection and its of the “window” variables can can let’s us the implection,
Solution
To solve that problem, we must the we are wea. A solution is to crate apersonized supplier that wraps metabark in the function in a more compatible manner. This approach involves the cration of the service is a separate module that offrs a safe and safe for an angular tplications.
Here is an example of implementation:
`Typescript
Import {injectable} from ‘@angular/core’;
Import {Eters} from “Ethers”;
@Injectable ({
provided: “root”
})
EXPORT CLASS METASKPROVIDER {
Private EthereumProvider = New MetamanspageProvider ();
builder () {
this.etherumProvider.init ();
}
Get Etherum () Ethers.web3 {
returns this.
}
}
`
Using the decorator @@ injectable and crating a-sonalized supplier, we can safely theccess.
angular configuration
To usemetabarkprovider, you must configure angular to recognize
`Typescript
Import {ngmodule} from ‘@angular/core’;
Import {metamarkprovider} prior ‘./metamark.provider’;
@Ngmodule ({
Suppliers:
{
Provide: MetascinpageProvider,
Usclass: MetamuProvder
}
]
})
Export class Appmodule {}
“
Conclusion*
Understanding the basics and implementing a-sonalized solution, developers can overcom This approach not on the solves the compatibility problem, but also offrs a safer weaact to the interact.
Remember to always the best practices for the development of web applications, including kiped . Happy coding!
