Metamask: Metamask SDK window is not defined on nextjs

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Here is a step -by -step guide and a sample code that will help you solve the Metamask: Metamk SDK window is not defined "error" Next.js:

What is the problem?

Metamk SDK requires access to the browser window object that can only be found in the browser context. However, your Next.js program is designed on the server side and has no direct access to the browser window.

Solution 1: Use server side submission (SSR) method

Instead of directly using the "window" object, you can use the USSR method to obtain the required data from the MetamK SDK. Here's an example:

`Jsx

Import {metamsdk} from '@Metamask/sdk';

CONST GETMETAMASKWINDOW = Async () => {

Const Window = wait for a new promise ((resolve) => globalthis.Settimeout (resolve, 1000));

Return window;

};

Export the default function program () {

CONST METAMASKWINDOW = waiting for getmetamaskwindow ();

// In the React Component Use Metamk SDK

}

`

In this example, we use the promise to wait at least 1 second before returning the "window" object. Then we use this object to achieve the "window" feature.

Solution 2: Use the Library of Internationalization (eg i18n.js)

Another option is to use the Library of Internationalization, such as the i18N.JS, which allows you to convert between the browser window and the server side data. You can install i18n.js via NPM or yarn:

`Bash

NPM installation i18n-js

`

Then you can use your component to access the data you need, you can use the Urei18N hook from the i18N-JS:

`Jsx

Import {USEI18N} of 'i18next';

CONST GETMETAMASKWINDOW = Async () => {

CONST I18N = Use18N ();

Return window;

};

`

Solution 3: Use a wrapping component

Another way is to create a wrapping component that uses the Metamk SDK and manages the data on the client's side. In this way, you can ensure that the necessary data are available, even if the Next.js does not provide component:

`Jsx

Import {metamsdk} from '@Metamask/sdk';

CONST METAMASKWRAPPER = ({Data}) => {

return <division {data}