* Show error when `router` or `Component` are returned in _app.js
getInitialProps
* Update to only show error in dev mode
* Update packages/next-server/server/render.tsx
Co-Authored-By: ijjk <22380829+ijjk@users.noreply.github.com>
* make router UrlIsNew comparing method work as expected
* Remove shallow-equals from router and update urlIsNew check
* Remove shallow-equals test since it is no longer used
* Add integration test for asPath query
* AMP page reload
* Fix comment
* Skip dev files in production
* Polyfill event source
* Add HMR test for AMP
* Use webdriver
* Use a dynamic server for HMR test
* ffs
We don't use a lot of the features of `glob`, so let's remove it in favor of a leaner approach using regex.
It's failing on windows and I have no idea why and don't own a windows machine 🤦🏼♂️
(Ignore some of the commits in here, I forgot to create the new branch before I started working)
After talking with @timneutkens it was decided it'd be more streamlined to replace the onDemandEntries WebSocket with an alternative. Using the EventSource connection gives us these benefits over the WebSocket one:
- less code needed
- no extra server running
- no extra config for onDemandEntries
Relevant commit: f913aabe16
~~I needed to upgrade Standard to work with JSX fragment syntax.~~ This caused too much noise so I just stopped using Fragments.
Arguments that held the same name as one of the default commands were filtered out, causing issues.
For example `next build build` would get rid of the second `build` parameter.
Fixes#6263
Fixes#5347
The main issue is that we were waiting only 1 level of dynamic imports, so the dynamic imports nested inside other dynamic import files were not awaited. This would cause either a flash of loading states or you wouldn't see the loading state (because of preload) but it would then show a hydration warning in development.
Thanks to @arthens for providing the reproduction that I modelled the tests after.
After discussion, I added falling back to fetch based pinging when the WebSocket fails to connect. I also added an example of how to proxy the onDemandEntries WebSocket when using a custom server. Fixes: #6296
Closes: #6244
This will block the following keys:
```
NODE_.+
__.+
```
There doesn't seem to be a way to simulate a failed build or else I'd add tests for it.
* Set default `Error` status code to 404
This is an appropriate default behavior because:
1. When the server encounters an error, the `err` property is set.
2. When the client-side application crashes, the `err` property is set.
This means the "only" way to render the `/_error` page without an error
is when a page is not found (special condition).
Fixes#6243Closes#5437
* Add new integration test for client side 404
* single quotes
* Remove unused variable
* Standard needs to go away
* Whoops
* Check for null status code in res and err
* Only check response for valid statusCode
* Implement circular JSON err.sh link
* Add test for getInitialProps returning circular json
* Make test warn less
* Fix tests
* Add reference to original tests
Fixes#5363
I noticed this happening when making some changes on the nextjs.org/learn app. Basically we didn't apply updates when a warning was emitted from webpack. This would cause issues for users using eslint-loader or similar too.
original code in `/lib/router/router.js`
```
urlIsNew (pathname, query) {
return this.pathname !== pathname || !shallowEquals(query, this.query)
}
```
the urlIsNew compare `this.pathname` to an argument `pathname`
the invokers:
```
// If asked to change the current URL we should reload the current page
// (not location.reload() but reload getInitialProps and other Next.js stuffs)
// We also need to set the method = replaceState always
// as this should not go into the history (That's how browsers work)
if (!this.urlIsNew(asPathname, asQuery)) {
method = 'replaceState'
}
```
the parameter here is `asPathname` destructured from `asPath`
so here is a problem when we reuse a single page rendered in two asPaths
pages/a.js
```
<>
<Link href='/a'><a>goto a</a></Link>
<Link href='/a' as='/b'><a>goto b</a></Link>
</>
```
If we navigate to page /a, then click 'goto b', actually the history is replaced, not pushed.
It is expected that history could be correctly pushed and popped as long as the browser url is changed.
This PR aims at replacing next-server/lib/event-emitter.js by mitt.
Fix https://github.com/zeit/next.js/issues/4908
event-emitter.js is ~400 bytes gzipped vs mitt is 200 bytes
Extends on #5927, instead of `.default` we'll expose `.render` which is semantically more correct / mirrors the naming of the custom server API.
I've updated the spec in #5927 to reflect this change.
(copied from #5927):
```js
const http = require('http')
const page = require('./.next/serverless/about.js')
const server = new http.Server((req, res) => page.render(req, res))
server.listen(3000, () => console.log('Listening on http://localhost:3000'))
```
Saw a reply on the original pull request that the WebSocket using a random port broke their set up so I added a `--websocket` or `-w` argument similar to the `-p` argument to allow manually setting this port also.
**This does not change existing behavior.**
building to serverless is completely opt-in.
- Implements `target: 'serverless'` in `next.config.js`
- Removes `next build --lambdas` (was only available on next@canary so far)
This implements the concept of build targets. Currently there will be 2 build targets:
- server (This is the target that already existed / the default, no changes here)
- serverless (New target aimed at compiling pages to serverless handlers)
The serverless target will output a single file per `page` in the `pages` directory:
- `pages/index.js` => `.next/serverless/index.js`
- `pages/about.js` => `.next/serverless/about.js`
So what is inside `.next/serverless/about.js`? All the code needed to render that specific page. It has the Node.js `http.Server` request handler function signature:
```ts
(req: http.IncomingMessage, res: http.ServerResponse) => void
```
So how do you use it? Generally you **don't** want to use the below example, but for illustration purposes it's shown how the handler is called using a plain `http.Server`:
```js
const http = require('http')
// Note that `.default` is needed because the exported module is an esmodule
const handler = require('./.next/serverless/about.js').default
const server = new http.Server((req, res) => handler(req, res))
server.listen(3000, () => console.log('Listening on http://localhost:3000'))
```
Generally you'll upload this handler function to an external service like [Now v2](https://zeit.co/now-2), the `@now/next` builder will be updated to reflect these changes. This means that it'll be no longer neccesary for `@now/next` to do some of the guesswork in creating smaller handler functions. As Next.js will output the smallest possible serverless handler function automatically.
The function has 0 dependencies so no node_modules are required to run it, and is generally very small. 45Kb zipped is the baseline, but I'm sure we can make it even smaller in the future.
One important thing to note is that the function won't try to load `next.config.js`, so `publicRuntimeConfig` / `serverRuntimeConfig` are not supported. Reasons are outlined here: #5846
So to summarize:
- every page becomes a serverless function
- the serverless function has 0 dependencies (they're all inlined)
- "just" uses the `req` and `res` coming from Node.js
- opt-in using `target: 'serverless'` in `next.config.js`
- Does not load next.config.js when executing the function
TODO:
- [x] Compile next/dynamic / `import()` into the function file, so that no extra files have to be uploaded.
- [x] Setting `assetPrefix` at build time for serverless target
- [x] Support custom /_app
- [x] Support custom /_document
- [x] Support custom /_error
- [x] Add `next.config.js` property for `target`
Need discussion:
- [ ] Since the serverless target won't support `publicRuntimeConfig` / `serverRuntimeConfig` as they're runtime values. I think we should support build-time env var replacement with webpack.DefinePlugin or similar.
- [ ] Serving static files with the correct cache-control, as there is no static file serving in the serverless target
Resolves#4055
Credit: https://github.com/zeit/next.js/pull/5095
I didn't use the ignore webpack plugin from the original PR and tested bundle size with https://github.com/zeit/next.js/pull/5339 - seems to be safe on that front.
Was able to get tests to pass locally, unsure of what goes wrong in CI 🤷♂️
**Questions**
1) The initial PR didn't include changes to `next-server/lib/router` in `getRouteInfo()`. Should the same changes be made within?
2) Should we add a test for rendering a component created via `forwardRef()`?
`component-with-forwardedRef`:
```javascript
export default React.forwardRef((props, ref) => <span {...props} forwardedRef={ref}>This is a component with a forwarded ref</span>);
```
some test:
```javascript
test('renders from forwardRef', async () => {
const $ = await get$('/component-with-forwardedRef')
const span = $('span')
expect(span.text()).toMatch(/This is a component with a forwarded ref/)
})
```
This message is from @timneutkens after making changes:
- Convert executables to Typescript
- Remove `minimist` in favor of `arg`
- Implement `--node-args` usage: `--node-args="--throw-deprecation"`
- Adds tests for usage of the `next` cli
Fixes#4495
Here's my approach for replacing the XHR on-demand-entries pinger #1364#4495. I'm not sure if this is the way everyone wants to accomplish this since I saw mention of using a separate server and port for the dynamic entries websocket, but thought this would be a fairly clean solution since it doesn't need that.
With this method the only change when using a custom server is you have to listen for the upgrade event and pass it to next.getRequestHandler(). Example:
```
const server = app.listen(port)
const handleRequest = next.getRequestHandler()
if(dev) {
server.on('upgrade', handleRequest)
}
```
# Fixes https://github.com/zeit/next.js/issues/5674
This adds config option
```js
// next.config.js
module.exports = {
crossOrigin: 'anonymous'
}
```
This config option is defined in the webpack Define Plugin at build.
`Head` and `NextScript` now use the config option, if it's not explicitly set on the element.
This value is now passed to Webpack so it can add it to scripts that it loads.
The value is now used in `PageLoader` (on the client) so it can add it to the scripts and links that it loads.
Using `<Head crossOrigin>` or `<NextScript crossOrigin>` is now deprecated.
This PR Fixes#4920
So the problem is that when a next.js application is built on windows, the `pages-manifest.json` file is created with backslashes. If this built application is deployed to a linux hosting enviroment, the server will fail when trying to load the modules.
```
Error: Cannot find module '/user_code/next/server/bundles\pages\index.js
```
My simple solution is to modify the `pages-manifest.json` to always use linux separator (`/`), then also
modify `server/require.js` to, when requiring page, replace any separator (`\` or `/`) with current platform-specific file separator (`require('path').sep`).
The fix in `server/require.js` would be sufficient, but my opinion is that having some cross-platform consistency is nice.
This change was tested by bulding an application in windows and running it in linux and windows, aswell as building an application in linux and running it in linux and windows. The related tests was also run.
# Conflicts:
# test/integration/production/test/index.test.js
Fixes#3705Fixes#4656
- No longer automatically dedupe certain tags. Only the ones we know are *never* going to be duplicate like charSet, title etc.
- Fix `key=""` behavior, making sure that if a unique key is provided tags are deduped based on that.
For example:
```jsx
<meta property='fb:pages' content='one'>
<meta property='fb:pages' content='two'>
```
Would currently cause
```jsx
<meta property='fb:pages' content='two'>
```
### After this change:
```jsx
<meta property='fb:pages' content='one'>
<meta property='fb:pages' content='two'>
```
Then if you use next/head multiple times / want to be able to override:
```jsx
<meta property='fb:pages' content='one' key="not-unique-key">
<meta property='fb:pages' content='two' key="not-unique-key">
```
Would cause:
```jsx
<meta property='fb:pages' content='two'>
```
As `key` gets deduped correctly after this PR, similar to how React itself works.
- Replaces taskr-babel with taskr-typescript for the `next` package
- Makes sure Node 8+ is used, no unneeded transpilation
- Compile Next.js client side files through babel the same way pages are
- Compile Next.js client side files to esmodules, not commonjs, so that tree shaking works.
- Move error-debug.js out of next-server as it's only used/require in development
- Drop ansi-html as dependency from next-server
- Make next/link esmodule (for tree-shaking)
- Make next/router esmodule (for tree-shaking)
- add typescript compilation to next-server
- Remove last remains of Flow
- Move hoist-non-react-statics to next, out of next-server
- Move htmlescape to next, out of next-server
- Remove runtime-corejs2 from next-server
**What's this PR?**
Based on the feedback on [this PR](https://github.com/zeit/next.js/pull/5722) @timneutkens asked me to create a test for `ssr: true`
**What's it do?**
- adds a test for setting `ssr: true` - /basic
- adds a test for setting `ssr: true` - /production
* Add node_modules bundling under the —lambdas flag for next build
* Run minifier when lambdas mode is enabled
* Add lambdas option to next.config.js
* Add test for lambdas option
Takes advantage of caching between builds for Terser, also makes writing caches for babel-loader faster by disabling compression.
Results for zeit.co (350 pages):
Without cache:
[4:16:22 PM] Compiled server in 1m
[4:16:57 PM] Compiled client in 2m
✨ Done in 125.83s.
With cache:
[4:19:38 PM] Compiled client in 17s
[4:19:50 PM] Compiled server in 29s
✨ Done in 31.79s.
Note: these results are from my multi-core Macbook Pro 2017, exact specs:
MacBook Pro (13-inch, 2017, Four Thunderbolt 3 Ports)
- 3,3 GHz Intel Core i5
- 16 GB 2133 MHz LPDDR3
- Intel Iris Plus Graphics 650 1536 MB
The `without cache` build runs uglify in parallel, so without cache is likely to take longer on environments where you have only 1 core available.
The `with cache` build however runs in a single thread, so the results should be similar.
- [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.
* Update jest
* Let jest start chromedriver
This makes sure chromedriver always ends even if the test was canceled by the user.
* Properly close browser in production-config test
* Properly close browser in production/security test
* Properly close browser in export test
* Properly close browser in app-aspath test
* Remove taskr from project root
This isn’t needed anymore
* Readd taskr to project root (temporary)
* Improve global setup/teardown
* Properly close browser in basic/client-navigation test
Clicking an target=_blank link will open a second browser window. We can only close this by using broser.quit()
* Set a default path for wasm modules
* Added the mimetype "application/wasm" for wasm files
* Upgrade write-file-webpack-plugin to 4.4.1
* Made dynamic(import()) in test to dynamic(() => import())
* Add failing tests
* Upgrade wd module
* Pass dynamic import webpack ids to the client side
* Pass through webpack ids to initalializer and only use those
* Compile dynamic(import()) to dynamic(() => import())
* Default dynamicIds
* Use forked hard-source-plugin
* Possibly fix test
* Make tests fail less intermittently
* Temporarily disable hard-source in production
* Make sure dynamic import chunks are unique
* Disable hard-source
* Log html if error is thrown
* Fix test
Since we are now using webpacks `mode` flag we can get rid of:
* `webpack.optimize.ModuleConcatenationPlugin`
* `webpack.DefinePlugin` (`process.env.NODE_ENV`)
https://webpack.js.org/concepts/mode/
* Add test for /_next/development route
* Make sure useFileSystemPublicRoute: false only disables filesystem routing
* Bring back comment
* Add useFileSystemPublicRoutes tests
## Minor changes
When `NODE_ENV=test` is used we'll now apply the `'auto'` configuration for modules transformation. Which causes Babel to check if the current environment needs to be transformed or not. In practice this means that the following `.babelrc` is not needed anymore:
**OLD**:
```json
{
"env": {
"development": {
"presets": ["next/babel"]
},
"production": {
"presets": ["next/babel"]
},
"test": {
"presets": [["next/babel", { "preset-env": { "modules": "commonjs" } }]]
}
}
}
```
**NEW**:
```
{
"presets": ["next/babel"]
}
```
## Patches
`@babel/preset-react` has a `development` option that automatically applies a development-time plugin we manually applied before (`@babel/plugin-transform-react-jsx-source`). It also adds another development-time plugin that is said to make debugging/errors clearer: `@babel/plugin-transform-react-jsx-self` which we didn't apply before. Overall this means we can take advantage of preset-react to provide these plugins.
Currently, using `as` will cause the router to think the URL is not changing in the case where you're re-rendering the same page with a different route. This would most likely be an issue for custom servers
which are using shallow routing.
This should be an invisible change for non-custom-server users, since `as` is defaulted to `url` if not set.
This should resolve#3065.
Fixes#5038
The problem with `constructor` is that it doesn't have `context` yet when being called. It's also considered unsafe to add a side-effect on constructor except when server-rendering
~I am not sure if this is a valid fix yet, but I was going to let CI run the tests for me. I'll close and look into it if the build fails.~
Let me know if this will cause issues, but I don't think it should. The React docs recommends moving `componentWillMount` logic into the constructor
- [x] Add unit test
- [x] Allow to get the display name of a native component (e.g.: `div`) without throwing
- [ ] Remove displayName in production mode
`<Container>` does not receive any property. There is no way the *scrollToHash* logic can work right now. I believe it's a regression. It was working fine at some point. I'm sorry, I'm too lazy to add a test.
This fix was tested on Material-UI 👌.
This bug reproduction is the following:
As soon as you want to transition to a new page with a hash. The scroll doesn't change.
- start on pageA
- you scrollTop to 100
- you move to pageB#hash
- you stay at scrollTop 100, but #hash is at scrollTop 400.
* Throw error if getInitialProps is defined as as instance method
Omitting the static keyword happens pretty often. Therefore we should trigger a warning in devmode.
Closes: #4782
* Document getInitialProps error
* Add unit tests for loadGetInitialProps
Depends on https://github.com/zeit/next-plugins/pull/228
Failing tests are expected as `@zeit/next-css` has to be updated/released first.
This implements rendering of `.css` chunks. Effectively removing the custom document requirement when adding next-css/sass/less/stylus.
* Compile pages to .next/static/<buildid>/pages/<page>
* Fix test
* Export class instead of using exports
* Use constant for static directory
* Add comment about what the middleware does
* Add support for custom App and Component enhancers
* Add ctx.renderPage test
* Add tests for single enhancer function
* Cleanup renderPage options check
* Cleanup
* Add comment about backwards compatibility for renderPage
* Add more test cases
There are occasions where it is useful to have `target='_blank'` on hyperlinks within your own app. (For example, if your app is being loaded in an iframe and you'd like for the links to break out in to new windows.)
With this PR, the `onClick` logic in Link now checks for an external target on the nested <a/> tag, and will fall back to the default behavior if it's present, similar to the logic for shift-/cmd-clicking the link.
## What's wrong
This problem is specific to errors that happen on the client _after_ the initial mounting of the component. (The router has special logic to handle exceptions thrown in `getInitialProps` during a client-side navigation, and I've confirmed this logic is correct.)
Specifically, if the page is mounted, and you raise an exception on the page, the exception will cause the error page to be mounted without ever invoking `getInitialProps` on the new App/Error page pairing.
This has been illustrated with multiple repros in #4574.
## Why is it broken
This regression was introduced two months ago in #4156, where the invocation of `getInitialProps` was removed from the app's top-level error handler. Specifically, [this line](https://github.com/zeit/next.js/pull/4156/files#diff-895656aeaccff5d7c0f56a113ede9662L147) was removed and [replaced by a comment](https://github.com/zeit/next.js/pull/4156/files#diff-895656aeaccff5d7c0f56a113ede9662R167) that says that "`App` will handle the calling of `getInitialProps`".
I believe the sentiment about "`App` will handle calling `getInitialProps`" is mistaken. In fact, it really doesn't make sense on its face, since it would require an instance lifecycle method of `App` (which is mounted immediately after the comment) to invoke the `static getInitialProps` method on the error page.
## How I fixed it
I've fixed this in a fork by restoring Lines 146 – 148 that were removed in #4156. I think this is the right fix, but Next.js's handling of `getInitialProps` could certainly be improved. (The code in [this conditional](86d01706a6/client/index.js (L173)) speaks to the unnecessary complexity around this.)
When clicking a next/link with a hash (#something) multiple times, it wouldn't keep the scrolling behavior browsers have. This makes sure we correctly trigger it.
Fixes#4686
Adds tests for @zeit/next-typescript so that we don't regress on this again.
I've fixed an issue in the `next` CLI too which caused lingering processes when the process gets force killed, which is what we do in the test suite, so it kept running if there was no manual quit.
This PR fixes#4615
From the issue :
> One thing we might consider is merging and showing a warning for keys not defined in exportPathMap
The behaviour after this PR is the following :
```js
// next.config.js
module.exports = {
exportPathMap: () => ({
'/': { page: '/', query: { a: 'blue' } }
})
}
```
| url called | `ctx.query` | warning ? |
|-|-|-|
| `/` | `{ a: 'blue' }` | |
| `/?a=red` | `{ a: 'blue' }` | |
| `/?b=green` | `{ a: 'blue', b: 'green' }` | `... parameter 'b' missing in exportPathMap` |
Is that the expected behaviour ? If not, I'll update the PR to shape the expected behavior.
The prepares for next-server.
I also took this as an opportunity to get all build directory paths from a single location, as they were previously scattered across webpack/babel plugins and loaders.
Fixes#4603.
Tests explain it the best:
```js
describe('development mode (no chunkhash)', () => {
it('should strip the extension from the filename', () => {
const filename = 'foo_bar_0123456789abcdef.js'
expect(getChunkNameFromFilename(filename, true)).toBe('foo_bar_0123456789abcdef')
})
it('should only strip the extension even if there\'s a hyphen in the name', () => {
const filename = 'foo-bar-0123456789abcdef.js'
expect(getChunkNameFromFilename(filename, true)).toBe('foo-bar-0123456789abcdef')
})
})
describe('production mode (with chunkhash)', () => {
it('should strip the hash from the filename', () => {
const filename = 'foo_bar_0123456789abcdef-0123456789abcdef.js'
expect(getChunkNameFromFilename(filename, false)).toBe('foo_bar_0123456789abcdef')
})
it('should only strip the part after the last hyphen in the filename', () => {
const filename = 'foo-bar-0123456789abcdef-0123456789abcdef.js'
expect(getChunkNameFromFilename(filename, false)).toBe('foo-bar-0123456789abcdef')
})
})
```
This fixes a missed bug introduced in #4510.
Because the regexp was `/-[^-]*/` and not `/-[^-]*$/`, a wrong part of the filename was being removed:
```
bad:
'foo-bar-0123456789abcdef-0123456789abcdef.js' -> 'foo-0123456789abcdef-0123456789abcdef.js'
good:
'foo-bar-0123456789abcdef-0123456789abcdef.js' -> 'foo-bar-0123456789abcdef'
```
By a stroke of luck this didn't affect the existing dynamically generated chunks. To prevent regression I've added unit tests for the function that generates the name.
Btw. in the original issue (#4433) I used the right regexp, I just used the wrong regexp in #4510.
cc @timneutkens
resolves#4115
For now, I just added `'article:tag'` so it could be duplicated if we need more we have to extend:
```javascript
const ALLOWED_DUPLICATES = ['article:tag']
```
Previously we called this directory holding the pages/chunks for server rendering `.next/dist` instead of `.next/server` which is confusing both when looking at it and in the codebase, since there's also `distDir` as a configuration option.
Also made this a constant in `next/constants` so functionality using this can be easily found.
Allow `onClick` on `next/link` child. This should not be a breaking change, but it's a very useful feature. Real-life use cases include: analytics or closing menu on navigation, and other.
- [x] allow optional `onClick` on `next/link` component's child
- [x] call original `child.props.onClick(e)` before `this.linkClicked(e)`
- [x] add integration tests
- [x] cancel the navigation if `e.defaultPrevented === true`
Fixes#1490
* Don’t use chunkhash in development
* Add test for dynamic imports styling
* Remove pre-load of dynamic page
* Make sure the browser gets closed only once
Adds an example based off of @jthegedus work on firebase hosting, compatible with next v6 and using typescript in both the firebase functions and the next app.
* Handle production errors correctly
* Improved source map support
* Make react-hot-loader hold state again
* Remove console.log
* Load modules on demand
* Catch errors in rewriteErrorTrace
* Update comment
* Update comment
* Remove source-map-support
* Load modules in next-dev
* Make sure error logged has sourcemaps too
* Add tests for production runtime errors
* Add tests for development runtime errors. Fix issue with client side errors in development
* Move functionality back to renderError now that error handling is consistent
* Rename to applySourcemaps
