Fix Storybook related to next-i18next setup

[natterstefan]

Bug Report

Relevant information

At the moment Storybook is not properly working as next-i18next depends on fs, which is not available in Storybook.

ModuleNotFoundError: Module not found: Error: Can't resolve 'fs' in '.../nextjs-template/node_modules/next-i18next/dist/esm/config'

Possible Solutions

• Add storybook example i18next/next-i18next#1012 (comment)
• [8.0.0-beta.4] Module not found: Can't resolve 'fs' i18next/next-i18next#935 (comment)
• https://gist.github.com/justincy/c1075650b1d5ba448c50eaf83cbb4ffe
• Support for Storybook 6 fynncfchen/storybook-addon-i18next#8 (comment)
• https://github.com/Piepongwong/gatsby_nextjs_storybook_i18n_scaffolding/blob/5207d34210a7c6f76b86d91c5e74fbd9250c9610/.storybook/preview.js#L1
• https://github.com/i18next/react-i18next/blob/7cfab9746b3ccc6f833cd9c892e7c3c804944a5e/example/react/src/i18n.js#L6
• https://github.com/i18next/react-i18next/blob/7cfab9746b3ccc6f833cd9c892e7c3c804944a5e/example/react-typescript4.1/namespaces/src/i18n/config.ts#L13

References

• Add storybook example i18next/next-i18next#1012
• How to enable storybook on node/server? storybookjs/storybook#4082 (comment)
• How to enable storybook on node/server? storybookjs/storybook#4082 (comment)
• Storybook can't get translations from static/locales i18next/next-i18next#324
• https://www.npmjs.com/package/storybook-addon-i18next

[natterstefan]

Update: as mentioned in #39 and #44, I think I'll replace https://github.com/isaachinman/next-i18next and use https://github.com/vinissimus/next-translate instead.

[natterstefan]

Storybook implementation of next-translate: aralroca/next-translate#434 (comment)