Metamask: Metamask SDK window is not defined on nextjs

Here you will find a step-by-step instructions and a sample code with which you cannot fix the “Metamask: Metamask-SDK window” window in Next.Js.

What is the problem?

The Metamask -SDK requires access to the browser window object, which is only available in the browser context. Your next.

Solution 1: Use a server-side rendering (SSR) method

Instead of using the “window” object directly, you can use an SSR method to get the required data from the Metamask -SDK. Here is an example:

`JSX

Import {Metamasksdk} from ‘@metamask/sdk’;

Const Getmetamaskwindow = async () => {

Const Window = expect a new promise ((resolve) => globalthis.settimeout (resolve, 1000));

Return window;

};

Export standard function function app () {

Const Metamaskwindow = WaTte Getmetamaskwindow ();

// Use the Metamask -SDK within the React component

}

`

In this example, we use a promise to wait for at least 1 second before we return the “window” object. We then use this object to access the “Window” property.

Solution 2: Use an internationalization library (e.g. i18n.js)

Another option is to use an internationalization library like i18n.js, which offers a way to convert between browser window and server -side data. You can install i18n.js via NPM or yarn:

`Bash

NPM Install I18N-JS

In your component you can then use the “I18N-JS” use hook to access the required data:

`JSX

Import {usei18n} from ‘i18next’;

Const Getmetamaskwindow = async () => {

Const i18n = usei18n ();

Return window;

};

`

Solution 3: Use a wrapper component

Another approach is to create a wrapper component that uses the Metamask SDK and depends on the data that call up on the client side. In this way, you can ensure that the required data is also available.

`JSX

Import {Metamasksdk} from ‘@metamask/sdk’;

Const Metamaschrapper = ({Data}) => {

return

;

};

Export standard function function app () {

Const Data = WaTte Getmetamaskwindow ();

return (

);

}

`

In this example, we use a separate “Metamaschrapper” component with which the Metamask -SDK picks up the necessary data. In this way, the data is still available, even if Next.Js does not render the component.

Select the solution that best suits your application

Each of these solutions has its own advantages and disadvantages. Consider the following factors when deciding which approach is best suited for you:

• Do you have to access the browser window object directly? (Solution 1)

• Do you need support for internationalization? (Solution 2)

• Do you prefer a client-side solution or a server-side rendering-based? (Solution 3)

By choosing the right solution, you should not be defined in your next application “Metamask: Metamask SDK”.

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