* Move __NEXT_DATA__ into a application/json script tag
As outlined by @dav-is here https://github.com/zeit/next.js/pull/4943
* Set __NEXT_DATA__ for backwards compatability
Based on this PR https://github.com/zeit/next.js/pull/5520 there should be `engines` definition in package.json as first warn.
Why i choose Node 8 as minimum? @timneutkens said (https://github.com/zeit/next.js/pull/5520/files#r228330327) that next.js should work on version 7.5 but automated tests in TravisCI are with versions 8 and 10. Version 7 was development branch. I think only production ready should be recommended.
Clears the way a bit for #4943, also makes _document.js less complex, and will allow us to move `__NEXT_DATA__` to a `application/json` script tag.
Also this causes a slightly smaller bundle size 😌
* added example for using typings-for-css-modules-loader
* Update examples/with-typings-for-css-modules/README.md
* Update examples/with-typings-for-css-modules/README.md
* Update examples/with-typings-for-css-modules/next.config.js
- Looks like no other example provides a link to a hosted demo
- There is the "Deploy to now" badge, so it can be deployed on demand when needed
- The link is broken anyway
- Probably any example hosted by an individual contributor sooner or later will be cleaned up, doesn't feel like a reliable way to provide a live demo
package accept returns false if can't find language in offered list of languages, then later on
bool is attempted to be split, and app crashes in prod & dev
- Shows warnings even when resolving, to facilitate hints set to 'warning'
- Fixes#876 : Set performance.hints to 'warning' or 'error' in next.config.js
Docker Multistage
* Remove `devDependencies` from `./node_modules`
in `builder` for faster copy on `base` init
* Added `isomorphic-unfetch` to show it not
being copied over to `base`.
* `isomorphic-fetch` will still show from `next`
I successfully deployed this example with `now` and `now --public` (I am on premium plan).
Did this before deploy
```sh
$ cp Dockerfile.multistage Dockerfile
```
The mobx-state-tree examples (with and without typescript) pre-dated the next _app class and needed to be updated to use _app for persisting state across client-side navigation transitions. Also removed unneeded custom server class to better keep with the "show one feature per example" style of the next examples folder
- [x] Move jest config from npm scripts to `jest.config.js`
- [x] Remove obsolete cross-env package (we don't need it anymore 🎉)
- [x] Fix bug where tests are not waiting for webdriver to be ready.
Fixes#5352 . This updates the example updating react-i18next to v8.0.6, replacing the `translate` HOC to `withNamespaces` and `I18n` to `NamespacesConsumer`.
There is one thing that I am not sure if is correct or not so I need some guidance. You gotta wrap the page with the `withI18next` HOC so it will extend the `getInitialProps` of the page with this:
```
Extended.getInitialProps = async (ctx) => {
const composedInitialProps = ComposedComponent.getInitialProps
? await ComposedComponent.getInitialProps(ctx)
: {}
const i18nInitialProps = ctx.req
? i18n.getInitialProps(ctx.req, namespaces)
: {}
return {
...composedInitialProps,
...i18nInitialProps
}
}
```
The problem lies in `i18n.getInitialProps` that has this code:
```
i18n.getInitialProps = (req, namespaces) => {
if (!namespaces) namespaces = i18n.options.defaultNS
if (typeof namespaces === 'string') namespaces = [namespaces]
req.i18n.toJSON = () => null // do not serialize i18next instance and send to client
const initialI18nStore = {}
req.i18n.languages.forEach((l) => {
initialI18nStore[l] = {}
namespaces.forEach((ns) => {
initialI18nStore[l][ns] = (req.i18n.services.resourceStore.data[l] || {})[ns] || {}
})
})
return {
i18n: req.i18n, // use the instance on req - fixed language on request (avoid issues in race conditions with lngs of different users)
initialI18nStore,
initialLanguage: req.i18n.language
}
}
```
In my understanding, among other things, it gets the `i18n` object from the request (included by the `server.js`) and uses the data to create `initialI18nStore` and `initialLanguage`, and then return these two objects plus the `i18n` object itself. If you add the `i18n` object on the return, then there will be a crash on the client-side render of the page:
```TypeError: Cannot read property 'ready' of null```
I don't know why, but returning it breaks `NamespacesConsumer` component from `react-i18next` (the state becomes null). So I commented this line and the provider on `_app.js` is getting the `i18n` instance from the `i18n.js` file (the same as `server.js`). I don't know if this would be an issue so I would like help to debug this.
