Webpack will randomly execute script order if its runtime is not prioritized before chunks execute.
This seems to be somehow triggered in #13870 because of slightly different script ordering.
This had actually broke CSS, which is why our tests are failing 50% of the time:
Without this PR:
However, it's still problematic to use `async` in development since we rely on script execution order. So, this PR disables `async` in development.
We're exploring `defer` in the future anyway (over `async`), which will be ordered, so I don't mind diverging between dev and prod in this way.
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Fixes#13911
This adds scroll restoration handling to make sure the correct scroll position is restored after navigating back/forward to a page and the rendering hasn't completed by the time the default browser scroll restoration has taken place.
An initial failing test case was added which is working with the changes in this PR, if there are any other cases that should be added let me know and I can make sure we have them to ensure we don't regress on this behavior
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Fixes#12530
Extracted from https://github.com/vercel/next.js/pull/13333, the same exact code lives in that PR as well, but we can merge this separately if it makes reviewing https://github.com/vercel/next.js/pull/13333 easier
This PR does 3 things
- deduplicate code from build and next-dev-server that loads custom routes from next.config.js (`loadCustomRoutes`)
- in `loadCustomRoutes`, load these rewrites, headers and redirects configs concurrently instead of sequentially.
- in next-server, make `this.customRoutes` always defined, this allows us to remove the big `if` around its initialization code in `generateRoutes`, which in turn makes it possible to reuse this code for other routing than user defined routes, which is how https://github.com/vercel/next.js/pull/13333 adds its redirects.
Initial work to use chunkhashes instead of buildid for the page files in production. This does not change the calculation of the filename itself initially.
As discussed, this streamlines the handling for `basePath` to not automatically strip and add the `basePath` when provided to `next/link` or `router.push/replace` and only automatically adds the `basePath` and when it is manually provided it will cause a 404 which ensures `href` still matches to the pages directory 1-to-1.
This also adds additional test cases that we discussed to ensure this behavior is working as intended
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Fixes#13902
So I can't *entirely* explain why, but I believe this fixes#13132. 🙈 I basically ended up looking around at other `_next` URLs (are those asset URLs?) around the project and seeing that they tended to use `delBasePath()` to remove the base path from the current page's path whenever it was used.
When testing locally with the [repo submitted with the issue](https://github.com/robertovg/next-base-path-example), I no longer experience the constant page-reloading in dev mode when adding a query string to the URL.
This error isn't specific to just fallback SSG pages since any dynamic SSG page that is rewritten to can cause the `/_next/data` request to fail also since it currently derived from the the URL.
This can also fail for `getServerSideProps` since it derives the `/_next/data` URL the same way so might need to be updated to show in that case also
Disambiguate between pages/index.js and pages/index/index.js so that they resolve differently.
It all started with a bug in pagesmanifest that propagated throughout the codebase. After fixing pagesmanifest I was able to remove a few hacks here and there and more logic is shared now. especially the logic that resolves an entrypoint back into a route path. To sum up what happened:
- `getRouteFromEntrypoint` is the inverse operation of `getPageFile` that's under `pages/_document.tsx`
- `denormalizePagePath` is the inverse operation of `normalizePagePath`.
Everything is refactored in terms of these operations, that makes their behavior uniform and easier to update/patch in a central place. Before there were subtle differences between those that made `index/index.js` hard to handle.
Some potential follow up on this PR:
- [`hot-reloader`](https://github.com/vercel/next.js/pull/13699/files#diff-6161346d2c5f4b7abc87059d8768c44bR207) still has one place that does very similar behavior to `getRouteFromEntrypoint`. It can probably be rewritten in terms of `getRouteFromEntrypoint`.
- There are a few places where `denormalizePagePath(normalizePagePath(...))` is happening. This is a sign that `normalizePagePath` is doing some validation that is independent of its rewriting logic. That should probably be factored out in its own function. after that I should probably investigate whether `normalizePagePath` is even still needed at all.
- a lot of code is doing `.replace(/\\/g, '')`. If wanted, that could be replaced with `normalizePathSep`.
- It looks to me like some logic that's spread across the project can be centralized in 4 functions
- `getRouteFromEntrypoint` (part of this PR)
- its inverse `getEntrypointFromRoute` (already exists in `_document.tsx` as `getPageFile`)
- `getRouteFromPageFile`
- its inverse `getPageFileFromRoute` (already exists as `findPageFile ` in `server/lib/find-page-file.ts`)
It could be beneficial to structure the code to keep these fuctionalities close together and name them similarly.
- revise `index.amp` handling in pagesmanifest. I left it alone in this PR to keep it scoped, but it may be broken wrt nested index files as well. It might even make sense to reshape the pagesmanifest altogether to handle html/json/amp/... better
**First, apologies for a second PR on the same issue but I was working on this already so I thought I'd push it and let you decide which you want to merge.**
The PR is related to [13466](https://github.com/vercel/next.js/issues/13466).
Based on my research, the error happens if the options are empty, null, or undefined. That's why I have decided that the most proper check would be using the! post-fix expression operator may assert that its operand is non-null and non-undefined. ``if (options == null)``
(Optional)
I have also added a warning, which warns the user if the passed "dev" variable is not a boolean.
It's my first PR on the "packages" part of the repo so I'd be glad to receive all kinds of critics. If you want me to change or remove anything, I'm open to suggestions.
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Fixes#13466
This removes remaining references to `granularChunks` in configs, error messages, and comments.
Also removed the `process.env.__NEXT_GRANULAR_CHUNKS` value.
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Follow up to: https://github.com/vercel/next.js/pull/13663
In serverless mode, it's best practice to propagate an unhandled error so that the function is disposed instead of recycled. This helps fix the "bad state" problem.
Was going through _document and noticed some variable shadowing going on. Added a rule for it to our eslint configuration and went through all warnings with @Timer.
Fixes https://github.com/vercel/next.js/issues/13524
To do:
- [x] fix dev mode
- [x] there's a ~route ordering or~ trailing slash issue with top level catch-all (current tests reflect that)
- [x] in this test `/get-static-paths/whatever` should fall back to `/[[...optionalName]].js` since `fallback` is `false` in its `getStaticPaths` method. ~Currently seems to 500~ must have been a glitch
- [x] add tests for `null`, `undefined` ~and `false`~ behavior as well (if decided these are valid)
- [x] ~add tests for string params as well~ this is not allowed for catch-all routes
- [x] test behavior when fallback is enabled and a top level catch-all exists
This addresses some errors for `/_next/data` requests where encoded `/` values in dynamic route param would cause invalid behavior, a headers already sent error would be shown when sending the fallback page in development, and when rendering the `_error` page for a data request the error response would still be treated as a data request.
This also adds test cases for these errors to prevent regression
Looks like `caniuse-lite` is out of date and causing test failures.
- I upgraded both `browserslist` and `caniuse-lite` to latest semver compatible version.
- This seemed to cause changes in ncc compiled files, so recompiled.
- `lint-staged` failed on these files even though they should be ignored. As a fix, I applied the advice from https://github.com/okonet/lint-staged#how-can-i-ignore-files-from-eslintignore-
- Updated some test snapshots. 🤔 not sure this is the way to go
Closes#12045
This PR adds support for [etags](https://tools.ietf.org/html/rfc7232#section-3.2) to Next.js' API routes, which will improve user experience and decrease network traffic by enabling usage of etag-based caching.
Since non-fallback pages don't rely on the URL for hydration we can allow them to be rewritten to but pages with fallback still can't be rewritten to because we won't be able to parse the correct `/_next/data` path to request the page's data from. I added a test for this behavior and ensured it works correctly on Now.
Example on with fallback false rewrite on Now:
https://tst-rewrite-cp9vge4bg.now.sh/about
This code existed mostly to work around webpack 2 (yes 2.x) limitations where it crashed in certain cases where files didn't exist anymore. We have tests for that behavior and latest webpack has fixed these. Hence why this can be removed 👍
This removes `fork-ts-checker-webpack-plugin` and instead directly calls the TypeScript API.
This is approximately 10x faster.
Base build: 7s (no TypeScript features enabled)
- `fork-ts-checker-webpack-plugin@3.1.1`: 90s, computer sounds like an airplane
- `fork-ts-checker-webpack-plugin@4.1.6`: 84s, computer did **not** sound like an airplane
- `fork-ts-checker-webpack-plugin@5.0.0-alpha.14`: 90s, regressed
- `npx tsc -p tsconfig.json --noEmit`: 12s (time: `18.57s user 0.97s system 169% cpu 11.525 total`)
- **This PR**: 22s, expected to get better when we run this as a side-car
All of these tests were run 3 times and repeat-accurate within +/- 0.5s.
This pull request refactors our TypeScript preflight check in preparation for dropping the `fork-ts-checker-webpack-plugin` plugin.
This will make reviewing the subsequent PR much easier.
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There is no behavior change, so the existing test should cover this adequately.
By default, webpack will proceed to run loaders and plugins on all files, even after an error has been encountered during the build process.
This means you might need to wait minutes to see a syntax error encountered in one of your source files. This PR fixes that.
