Shared Component Data in NextJS

There are situations when several components need to access the same data. As an example, let's say we have a certain array of users. On one route, we want to show a list of users, and on another route with a dynamic parameter - the description of a specific user by their id.

Let's implement what was described. We will create the following file structure:

/app/
- users/
  - users.js
  - /list/
    - page.jsx
  - /show/[id]/
    - page.jsx

Let's create a separate file with user data:

export default users = [
	{
		id: 1,
		name: 'name1',
		surn: 'surn1',
	},
	{
		id: 2,
		name: 'name2',
		surn: 'surn2',
	},
	{
		id: 3,
		name: 'name3',
		surn: 'surn3',
	},
];

Let's create a component to display the list of users:

import users from '../users.js';

export default function List() {
	let list = users.map(user => {
		return <li>
			{user.name}
		</li>;
	});
	
	return <ul>
		{list}
	</ul>;
}

Let's create a component to display a specific user by their id:

import users from '../../users.js';

export default function User({params}) {
	let user = users[params.id];
	
	return <div>
		<span>{user.id}</span>
		<span>{user.name}</span>
		<span>{user.surn}</span>
	</div>;
}

Given the following array:

let prods = [
	{
		id: 1,
		name: 'prod1',
		cost: 100,
		desc: 'desc1',
	},
	{
		id: 2,
		name: 'prod2',
		cost: 200,
		desc: 'desc2',
	},
	{
		id: 3,
		name: 'prod3',
		cost: 300,
		desc: 'desc3',
	},
];

Create two components. Let the first one show a list of products, and the second one show detailed product description.